TWI676126B - Touch sensitive system - Google Patents

Abstract

The present invention provides a touch system including: a touch screen; and a signal measurement device. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detection conductive bars overlap at a plurality of overlaps. Area, in which at least two adjacent intervals are different among the plurality of intervals between the plurality of detection conductive bars, wherein a first interval among the plurality of intervals is greater than a second interval, and the first interval is It is closer to the center of the touch screen than the second pitch. The signal measurement device includes: a driving circuit that sequentially provides driving signals to the plurality of driving conductive strips; and a detection circuit that sequentially detects signals from the plurality of detecting conductive strips to generate multiple sensing values, And adjusting the sensing values of the plurality of detected conductive bars according to the distances corresponding to the plurality of detected conductive bars.

Description

Touch system

The present invention relates to a touch screen, and in particular, to a technology for controlling parameters of a front-end module to level the touch screen.

Touch panels or touch screens are already one of the main input / output devices of modern electronic devices. In this application, the term touch screen is used to mean a touch panel that will not be displayed or a touch screen that will be displayed. The capacitive touch screen changes the detection signal through capacitive coupling with the human body, thereby determining the position where the human body touches on the capacitive touch screen. When the human body touches, the noise of the human body's environment will also be injected with the capacitive coupling between the human body and the capacitive touch screen, which will also change the detection signal. And because the noise is constantly changing, it is not easy to be predicted. When the noise is relatively small, it is easy to cause the touch to be judged or the position of the touch to be judged to be off.

In addition, because the signal passes through some load circuits, such as through capacitive coupling, a phase difference will occur between the signal received by the detection conductive strip and the signal before it is provided to drive the conductive strip. When the periods of the driving signals are the same, different phase differences indicate that the signals are received at different time delays. If the signal is ignored and the signal is detected directly, the starting phase of the signal measurement will be different and different results will be produced. If the measurement results corresponding to different conductive bars are very different, it will be difficult to determine the correct position.

In addition, relative to the different driving conductive strips, the resistance and capacitance of the driving signal The resistance of the circuit may also be different, which will cause the value of the image obtained by the touch screen during mutual capacitance detection to be high or low, which is not conducive to detection.

It can be seen that the above-mentioned prior art obviously has inconveniences and defects, and further improvement is needed. In order to solve the above-mentioned problems, the relevant manufacturers have made every effort to find a solution, but for a long time no applicable design has been developed and the general products and methods have no appropriate structure and methods to solve the above problems. Obviously, it is a problem that relevant industry operators are anxious to solve. Therefore, how to create a new technology is really one of the important R & D topics at present, and it has become a goal that the industry needs to improve.

In one embodiment of the present invention, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel, and at least two adjacent pitches among a plurality of pitches between the plurality of conductive strips are different.

In an embodiment of the present invention, a signal measurement method for a touch screen is provided. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. Among the plurality of spaces between the plurality of detection conductive bars, at least two adjacent spaces are different. The signal measurement method includes: sequentially providing driving signals to the plurality of driving conductive strips; sequentially detecting signals from the plurality of detected conductive strips to generate a plurality of sensing values; and according to the plurality of detected conductive strips. Corresponding spacing, adjust the sensing values of the plurality of detected conductive bars.

In an embodiment of the present invention, a signal measurement method for a touch screen is provided. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip are overlapped at a plurality of intersections. Overlapping area. Among the plurality of pitches between the plurality of driving conductive strips, at least two adjacent pitches are different. The signal measurement method includes: adjusting the voltage values of the driving signals emitted by the plurality of driving conductive strips according to the pitches corresponding to the plurality of driving conductive strips, and sequentially providing the driving signals to the plurality of driving conductive strips; and The signals of the plurality of conductive bars are sequentially detected to generate a plurality of sensing values.

In one embodiment of the present invention, a signal measurement device for a touch screen is provided. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. Among the plurality of spaces between the plurality of detection conductive bars, at least two adjacent spaces are different. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides driving signals to the plurality of driving conductive bars. The detection circuit sequentially detects signals of the plurality of detection conductive strips to generate a plurality of induction values; and adjusts the induction values of the plurality of detection conductive strips according to the distances corresponding to the plurality of detection conductive strips. .

In one embodiment of the present invention, a signal measurement device for a touch screen is provided. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. Among the plurality of pitches between the plurality of driving conductive strips, at least two adjacent pitches are different. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit adjusts the voltage values of the driving signals issued by the plurality of driving conductive strips according to the intervals corresponding to the plurality of driving conductive strips, and sequentially provides the driving signals to the plurality of driving conductive strips. The detection circuit sequentially detects signals from the plurality of detection conductive strips to generate a plurality of sensing values.

In an embodiment of the present invention, a touch system is provided, including the above-mentioned Touch screen and signal measurement device.

11‧‧‧Clock Circuit

12‧‧‧Pulse width adjustment circuit

131‧‧‧Drive switch

132‧‧‧Detection switch

141‧‧‧Drive selection circuit

142‧‧‧Detection selection circuit

151‧‧‧Drive electrode

152‧‧‧detection electrode

16‧‧‧Variable resistor

17‧‧‧ amplifier circuit

18‧‧‧Measurement circuit

19‧‧‧ External conductive objects

41‧‧‧Drive circuit

42‧‧‧detection circuit

43‧‧‧Storage Circuit

44‧‧‧Frequency setting

45‧‧‧Control circuit

51‧‧‧ full image

52‧‧‧One-dimensional sensing information driven by single electrode

62‧‧‧One-dimensional sensing information driven by two electrodes

61‧‧‧internal image

71‧‧‧External image

721‧‧‧One-dimensional sensing information of single electrode driving on the first side

722‧‧‧One-dimensional sensing information driven by single electrode on the second side

1310‧‧‧Control Module

1340‧‧‧Front end module

1341‧‧‧Drive Module

1342‧‧‧Detection Module

1500‧‧‧ touch screen

1510, 1510a ~ 1510k‧‧‧First electrode

1590,1590ab ~ 1590kl‧‧‧pitch

1600‧‧‧ touch screen

1610, 1610a, 1610z‧‧‧First electrode

1702, 1704, 1706‧‧‧Location

1710, 1710a ~ 1710d‧‧‧First electrode

1712‧‧‧Conductive sheet

1722‧‧‧Conductive sheet

1724‧‧‧Conductive sheet

1732‧‧‧Conductive sheet

1734‧‧‧Conductive sheet

1810, 1810a ~ 1810d‧‧‧First electrode

1820, 1820a ~ 1820d‧‧‧Second electrode

S‧‧‧ drive signal

1 and 4 are schematic diagrams of a capacitive touch screen and a control circuit thereof according to the present invention; FIG. 2A is a schematic diagram of a single-electrode driving mode; FIG. 2B and FIG. 2C are schematic diagrams of a dual-electrode driving mode; and FIGS. 3A and 3B are FIG. 5 is a schematic diagram of generating a complete image; FIG. 6 is a schematic diagram of generating a shrinking image; FIG. 7A and FIG. 7B are schematic diagrams of generating an expanded image; FIG. 8 FIG. 9A and FIG. 9B are schematic diagrams of driving signals generating different phase differences through different driving conductive strips; and FIG. 10 and FIG. 11 are signals of a touch screen according to the first embodiment of the present invention. FIG. 12 is a schematic flowchart of another touch screen signal measurement method according to the present invention; FIG. 13 is a schematic block diagram of a touch system according to an embodiment of the present invention; and FIGS. 14A-14D are according to the present invention. A method for measuring a signal of a touch screen according to an embodiment; FIG. 15 is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application; FIG. 16 is a circuit diagram of a touch screen according to an embodiment of the present application. A schematic structure; FIG. 17 is a schematic view of a portion of the touch panel according to an electrode structure of an embodiment of the present application; FIG. 18 is a schematic view of a portion of the electrode structure of the touch panel of the present application in accordance with one embodiment.

The present invention will be described in detail in the following examples. However, in addition to the disclosed embodiments, the present invention can also be widely applied to other embodiments. The scope of the present invention is not limited by these embodiments, but is subject to the scope of subsequent patent applications. In order to provide a clearer description and enable those skilled in the art to understand the invention, the parts in the diagram are not drawn according to their relative sizes. The proportions of certain sizes to other relevant dimensions will be highlighted. It looks exaggerated, and the irrelevant details are not completely drawn in order to keep the illustration simple.

Capacitive touch screens are susceptible to noise interference, especially from humans who touch the touch screen. The invention adopts an adaptive driving and / or detecting method to achieve the purpose of reducing noise interference.

The capacitive touch screen includes a plurality of electrodes arranged vertically and horizontally to detect the position of the touch. The power consumption is positively related to the number of electrodes driven at the same time and the voltage driven. During touch detection, noise may be conducted to the capacitive touch screen along with the conductor of the touch, making the signal-to-noise ratio (S / N ratio) worse, which may easily cause misjudgment and position deviation of the touch. In other words, the signal-to-noise ratio changes dynamically with the touched object and the environment.

Please refer to FIG. 1, which is a schematic diagram of a capacitive touch screen and a control circuit thereof according to the present invention, including a clock circuit 11, a pulse width modulation circuit 12, a drive switch 131, a detection switch 132, and a drive selection. The circuit 141, a detection selection circuit 142, at least one driving electrode 151, at least one detection electrode 152, a variable resistor 16, an amplifier circuit 17, and a measurement circuit 18. The capacitive touch screen may include a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of overlapping positions.

The clock circuit 11 provides a clock signal of the entire system according to a working frequency, and the pulse width modulation circuit 12 provides a clock signal based on the clock signal and a pulse width modulation parameter. The pulse width modulation signal is used to drive the driving electrode 151 described above. The driving switch 131 controls driving of the driving electrodes 151, and at least one driving electrode 151 is selected by the driving selection circuit 141. In addition, the detection switch 132 controls the electrical coupling between the driving electrode and the measurement circuit 18. When the driving switch 131 is on, the detection switch 132 is off, and the pulse width modulation signal is provided to the driving electrode 151 coupled by the driving selection circuit 141 via the driving selection circuit 141. The driving electrode 151 may be There are multiple, and the selected driving electrodes 151 may be one, two, or more of the driving electrodes 151. When the driving electrode 151 is driven by a pulse width modulation signal, a capacitive coupling occurs at the overlap of the detection electrode 152 and the driven driving electrode 151, and each detection electrode 152 is capacitively coupled to the driving electrode 151. Provides an input signal when coupled. The variable resistor 16 provides an impedance according to a resistance parameter. The input signal is provided to the detection selection circuit 142 through the variable resistance 16. The detection selection circuit 142 selects one, two, three, A plurality of or all of the detection electrodes 152 are coupled to the amplification circuit 17, and the input signal is provided to the measurement circuit 18 through the amplification circuit 17 according to a gain parameter. The measurement circuit 18 detects an input signal based on a pulse width modulation signal and a pulse signal. The measurement circuit 18 may sample the detection signal based on a phase parameter in at least one phase. For example, the measurement circuit 18 may have at least An integration circuit, each of which integrates an input signal of the input signals in at least one phase according to a phase parameter to measure the magnitude of the input signal. In an example of the present invention, each of the integrating circuits may further integrate a signal difference of a pair of input signals among the input signals according to a phase parameter in at least one phase, or separately in accordance with the phase parameter in at least one phase. The difference between the signal differences of the two pairs of input signals in the input signals is integrated. In addition, the measurement circuit 18 may further include at least one analog-to-digital circuit (ADC) to convert the result detected by the integration circuit into a digital signal. In addition, a person of ordinary skill in the art with ordinary knowledge can infer that the aforementioned input The signal may be amplified by the amplification circuit 17 and then provided to the measurement circuit 18 by the detection selection circuit 142, which is not limited in the present invention.

In the present invention, the capacitive touch screen has at least two driving modes, which are divided into the most power-saving single-electrode driving mode and the two-electrode driving mode, and has at least one driving potential. Each driving mode has at least one operating frequency corresponding to different driving potentials, each operating frequency corresponds to a set of parameters, and each driving mode corresponds to different driving potentials representing different degrees of power consumption.

The electrodes of the capacitive touch screen can be divided into a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of intersections. Please refer to FIG. 2A. In the single-electrode driving mode, one driving electrode 151 is driven at a time, that is, only one driving electrode 151 is provided with a driving signal S at the same time. When any one driving electrode 151 is driven, all detection electrodes are detected. 152 signals to generate one-dimensional sensing information. According to this, after driving all the driving electrodes 151, one-dimensional sensing information corresponding to each of the driving electrodes 151 can be obtained to form a complete image with respect to all the overlaps.

Please refer to FIGS. 2B and 2C. In the two-electrode driving mode, a pair of adjacent driving electrodes 151 are driven at one time. In other words, n driving electrodes 151 are driven n-1 times in total, and when any pair of driving electrodes 151 are driven, the signals of all the detecting electrodes 152 are detected to generate one-dimensional sensing information. For example, as shown in FIG. 2B, a driving signal S is provided to the first pair of driving electrodes 151 at the same time. Next, as shown in FIG. 2C, a driving signal S is provided to the second pair of driving electrodes 151, and so on. According to this, after driving each pair of driving electrodes 151 (a total of n-1 pairs), one-dimensional sensing information corresponding to each pair of driving electrodes 151 can be obtained, so as to form an indented image relative to the foregoing complete image. The number of pixels in the inset image is less than the number of pixels in the full image. In another example of the present invention, the dual-electrode driving mode further includes single-electrode driving of the driving electrodes 151 on both sides, and when the single-driving electrode 151 on either side is driven, the signals of all the detection electrodes 152 are detected to generate One-dimensional sensing information to provide two additional one-dimensional sensing information to form an expanded image with the internal shrink image. For example, the one-dimensional sensing information corresponding to the two sides is placed outside the two sides of the internal shrink image to form an expanded image.

Ordinary persons having ordinary knowledge in the technical field can infer that the present invention may further include a three-electrode driving mode, a four-electrode driving mode, and the like, and details are not described herein again.

The foregoing driving potential may include, but is not limited to, at least two driving potentials, such as a low driving potential and a high driving potential. A higher driving potential has a higher signal-to-noise ratio.

According to the foregoing, in the single-electrode driving mode, a complete image can be obtained, and in the dual-electrode driving mode, an internally reduced image or an externally expanded image can be obtained. The complete image, the internal miniature image, or the external expanded image can be obtained when the external conductive object 19 approaches or touches the front of the capacitive touch screen and the capacitive touch screen, thereby generating a change amount of each pixel to determine the position of the external conductive object 19. The external conductive objects 19 may be one or more. As also mentioned above, when the external conductive object 19 approaches or touches the capacitive touch screen, or is capacitively coupled with the driving electrode 151 and the detecting electrode 152, noise interference is caused, even when the driving electrode 151 is not driven, The external conductive object 19 may also be capacitively coupled with the driving electrode 151 and the detection electrode 152. In addition, noise may interfere from other channels.

Accordingly, in an example of the present invention, during the noise detection process, the driving switch 131 is turned off and the detection switch 132 is turned on. At this time, the measurement circuit may generate a signal based on the signal of the detection electrode 152. One-dimensional sensing information of noise detection to determine whether noise interference is within the allowable range. For example, it can be to determine whether the one-dimensional sensing information of noise detection has any value Exceeds a threshold value, or whether the sum or average of all values of the one-dimensional sensing information of noise detection exceeds a threshold value to determine whether noise interference is within the allowable range. A person with ordinary knowledge in the technical field can infer other ways to determine whether the noise interference is within an allowable range by using one-dimensional sensing information of noise detection, which is not described in the present invention.

The noise detection process can be performed when the system is started or every time the aforementioned complete image, internal shrink image or external expansion image is obtained, or it can be obtained periodically or multiple times to obtain the aforementioned complete image, internal shrink image or external expansion image. It is carried out at any time, or when it is detected that an external conductive object is approaching or touching. Those skilled in the art can infer other suitable timings for performing noise detection procedures, and the present invention is not limited thereto.

The present invention further provides a frequency-changing program, which performs frequency switching when it is determined that the noise interference exceeds the allowable range. The measurement circuit is provided with multiple sets of frequency settings, which can be stored in a memory or other storage medium to provide the measurement circuit to be selected in the frequency change program and to control the clock signal of the clock circuit 11 according to the selected frequency. The frequency change procedure may be to select one appropriate frequency setting one by one in the frequency setting, for example, one of the frequency settings is selected one by one and a noise detection process is performed until the noise interference is detected to be within a tolerable range. The frequency change procedure may also be to select an optimal frequency setting one by one in the frequency setting. For example, the frequency setting is selected one by one and the noise detection process is performed to detect the frequency setting with the least noise interference. For example, if the maximum value of the one-dimensional sensing information of the noise detection is detected to be the minimum frequency setting , Or the sum or average of all values of the one-dimensional sensing information of noise detection is the smallest frequency setting.

The frequency setting corresponds to, but is not limited to, a driving mode, a frequency, and a parameter group. The parameter group may include but is not limited to a group selected from the following sets: the aforementioned resistance parameters, the aforementioned gain parameters, the aforementioned phase parameters, and the aforementioned pulse width modulation parameters. A person with ordinary knowledge can infer other relevant parameters applicable to the capacitive touch screen and its control circuit.

The frequency setting may be as shown in the following list 1, including a plurality of driving potentials. The following takes the first driving potential and the second driving potential as examples. An ordinary person with ordinary knowledge in the technical field can infer that there may be more than three types of driving potentials. Potential. Each driving potential may have multiple driving modes, including, but not limited to, a group selected from the group consisting of a single electrode driving mode, a two electrode driving mode, a three electrode driving mode, a four electrode driving mode, and the like. Each driving mode corresponding to each driving potential has a plurality of frequencies, and each frequency corresponds to one of the aforementioned parameter groups. An ordinary person with ordinary knowledge in the technical field can infer that the frequency of each driving mode corresponding to each driving potential may be completely different or partly the same, which is not limited in the present invention.

Based on the above, the present invention provides a detection method for detecting a capacitive touch screen, please refer to FIG. 3A. First, as shown in step 310, a plurality of frequency settings are sequentially stored according to the power consumption, each frequency setting corresponds to a driving mode of a driving potential, and each frequency setting has a frequency and a parameter group, wherein the driving potential There is at least one. Next, as shown in step 320, the setting of the measurement circuit is initialized according to a parameter group of one of the frequency settings, and as shown in step 330, the measurement circuit detects the signal from the parameter group according to a parameter group of the measurement circuit. The signal of the detection electrode is used to generate one-dimensional sensing information according to the signal from the detection electrode. Next, as shown in step 340, it is determined whether the interference of a noise exceeds a permissible range according to the one-dimensional sensing information. Then, as shown in step 350, when the interference of the noise exceeds the allowable range, the operating frequency and the measurement circuit are changed in sequence according to a frequency and a parameter group of one of the frequency settings in order. After the setting, the one-dimensional sensing information is generated, and whether the interference of the noise exceeds the allowable range is determined according to the one-dimensional sensing information until the interference of the noise does not exceed the allowable range of the process. Alternatively, as shown in step 360 of FIG. 3B, when the interference of the noise exceeds the allowable range, the frequency and parameter group set according to each frequency are changed separately. The one-dimensional sensing information is generated after setting the operating frequency and the measurement circuit, and the interference of the noise is determined according to the one-dimensional sensing information, and the frequency that is least affected by the noise is determined. The set frequency and parameter group respectively change the setting of the operating frequency and the measurement circuit.

For example, as shown in FIG. 4, a detection device for detecting a capacitive touch screen according to the present invention includes a storage circuit 43, a driving circuit 41, and a detection circuit 42. As shown in the foregoing step 310, the storage circuit 43 includes a plurality of frequency settings 44, which are sequentially stored according to the power consumption. The storage circuit 43 may be a circuit, a memory, or any storage medium capable of storing electromagnetic records. In an example of the present invention, the frequency setting 44 may be configured by looking up a table. In addition, the frequency setting 44 may also store power consumption parameters.

The driving circuit 41 may be an integration of multiple circuits, and may include, but is not limited to, the aforementioned clock circuit 11, pulse width modulation circuit 12, driving switch 131, detection switch 132, and driving selection circuit 141. The circuits listed in this example are for the convenience of the present invention. The driving circuit 41 may include only a part of the circuits or add more circuits, which is not limited in the present invention. The driving circuit 41 is used to provide a driving signal to at least one driving electrode 151 of a capacitive touch screen according to an operating frequency. The capacitive touch screen includes a plurality of driving electrodes 151 and a plurality of detecting electrodes 152. 151 overlaps the detection electrode 152 at a plurality of overlapping locations.

The detection circuit 42 may be an integration of multiple circuits, and may include, but is not limited to, the aforementioned measurement circuit 18, amplifying circuit 17, detection selection circuit 142, and may even include a variable resistor 16. The circuits listed in this example are for the convenience of the present invention. The detection circuit 42 may include only a part of the circuits or add more circuits, which is not limited in the present invention. In addition, the detection circuit 42 further includes performing the foregoing steps 320 to 340 and performing step 350 or step 360. In the example of FIG. 3B, the The frequency settings can be stored sequentially without depending on the power consumption.

As described earlier, the one-dimensional sensing information used to determine whether the interference of the noise exceeds the allowable range is generated when the driving signal is not provided to the driving electrode 151. For example, when the drive switch 131 is turned off and the detection switch 132 is turned on.

In an example of the present invention, at least one driving potential has multiple driving modes. The driving modes include a single-electrode driving mode and a two-electrode driving mode. In the single-electrode driving mode, the driving signal only provides the driving at the same time. One of the electrodes, and in the two-electrode driving mode, the driving signal provides only one pair of the driving electrodes at the same time. The power consumption of the single-electrode driving mode is smaller than the power consumption of the two-electrode driving mode. In addition, in the single-electrode driving type, the detection circuit generates the one-dimensional sensing information when each driving electrode is provided with a driving signal to form a complete image, and wherein In the driving type, the detection circuit generates the one-dimensional sensing information when each pair of driving electrodes is provided with a driving signal to form an internal shrink image, wherein the pixels of the internal shrink image are smaller than the complete image. The pixels of the image. In addition, the detection circuit in the dual-electrode driving mode may further include driving both electrodes separately, and when a single driving electrode on either side is driven, the signals of all the detection electrodes are detected to generate the one-dimensional sensing respectively. Information, in which two one-dimensional sensing information generated by driving the electrodes on both sides are placed outside the two sides of the internal shrink image to form an expanded image, and the pixels of the expanded image are larger than the The pixels of the full image.

In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, and the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image. Magnitude> the magnitude of power consumption of the two-electrode driving mode corresponding to the first driving potential to generate the internal shrinkage image> the single corresponding to the second driving potential The electrode driving mode generates the power consumption of the complete image.

In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, and the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image. The size> the power consumption of the single-electrode driving mode corresponding to the second driving potential to generate the complete image.

In addition, in an example of the present invention, the signal of each detection electrode is provided to the detection circuit through a variable resistor respectively, and the detection circuit is a parameter set based on one of the frequency settings. The impedance of the variable resistor is set. In addition, the signal of the detection electrode is detected after being amplified by at least one amplifying circuit, and the detecting circuit sets a gain of the amplifying circuit according to a parameter set of one of the frequency settings. Moreover, the driving signal is generated according to a parameter set of one of the frequency settings.

In an example of the present invention, each value of the one-dimensional sensing information is generated according to a signal of the detection electrode at a set period, wherein the set period is one of the frequency settings. Parameter group to set. In another example of the present invention, each value of the one-dimensional sensing information is generated according to the signal of the detection electrode with at least one set phase, wherein the set phase is based on the frequency. Set one of the parameter groups to set.

In addition, the driving circuit 41, the detection circuit 42, and the storage circuit 43 may be controlled by a control circuit 45. The control circuit 45 may be a programmable processor or other control circuits, and the present invention is not limited thereto.

Please refer to FIG. 5, which is a schematic diagram of a single-electrode driving mode according to the present invention. The driving signal S is sequentially provided to the first driving electrode, the second driving electrode ... until the last driving electrode. Moving electrodes, and when each driving electrode is driven by the driving signal S, one-dimensional sensing information 52 of single electrode driving is generated. A single-electrode driven one-dimensional sensing information 52 generated when each driving electrode is driven can be combined to form a complete image 51. Each value of the complete image 51 corresponds to a change in the capacitive coupling of one of the electrode intersections. .

In addition, each value of the complete image corresponds to the position of one of the overlaps, respectively. For example, the center position of each driving electrode corresponds to a first one-dimensional coordinate, and the center of each detection electrode corresponds to a second one-dimensional coordinate. The first one-dimensional coordinate may be one of a horizontal (or horizontal, X-axis) coordinate and a vertical (or vertical, Y-axis) coordinate, and the second one-dimensional coordinate may be a horizontal (or horizontal, X-axis) coordinate and a vertical (or Vertical, Y-axis) coordinates of the other. Each overlap corresponds to a one-dimensional coordinate of the driving electrode and the detection electrode that overlaps the overlap. The one-dimensional coordinate is composed of the first-dimensional coordinate and the second-dimensional coordinate, such as (the first one Dimensional coordinate, second-dimensional coordinate) or (second-dimensional coordinate, first-dimensional coordinate). In other words, the one-dimensional sensing information driven by each single electrode corresponds to the first one-dimensional coordinate in the center of one of the driving electrodes, where each value of the one-dimensional sensing information driven by a single electrode (or each value of the complete image) A value) respectively correspond to the unitary-dimensional coordinates formed by a first one-dimensional coordinate in the center of one of the drive electrodes and the second one-dimensional coordinate in the center of one of the detection electrodes. Similarly, each value of the complete image corresponds to the center position of one of the overlaps, that is, the first one-dimensional coordinates of the center of one of the driving electrodes and the center of one of the detection electrodes, respectively. Coordinates of the first dimension formed by the second-dimensional coordinates.

Please refer to FIG. 6, which is a schematic diagram of a two-electrode driving mode according to the present invention. The driving signal S is sequentially provided to the first pair of driving electrodes, the second pair of driving electrodes ... until the last pair of driving electrodes, and one-dimensional driving of two electrodes is generated when each pair of driving electrodes is driven by the driving signal S. Degree sensing information 62. In other words, N driving electrodes may constitute N-1 pairs (multiple pairs) of driving electrodes. The one-dimensional sensing information 62 of the two-electrode driving generated when each pair of driving electrodes is driven is collected to form an internal image 61. The number of values (or pixels) of the indented image 61 is smaller than the number of values (or pixels) of the complete image 51. Relative to the complete image, the one-dimensional sensing information of each two-electrode driving of the indented image corresponds to the first one-dimensional coordinate of the central position between a pair of driving electrodes, and each value corresponds to the aforementioned one A unitary-dimensional coordinate formed by a first one-dimensional coordinate at the central position and a second one-dimensional coordinate at the center of one of the detection electrodes. In other words, each value of the indented image corresponds to a center position between a pair of overlapping positions, that is, a first one-dimensional coordinate corresponding to a center position between a pair of driving electrodes (or one of the plurality of driving electrodes), respectively. A unitary-dimensional coordinate formed with a second one-dimensional coordinate in the center of one of the detection electrodes.

Please refer to FIG. 7A, which is a schematic diagram of driving a single electrode on a first side in a two-electrode driving mode according to the present invention. The driving signal S is provided to the driving electrode closest to the first side of the capacitive touch screen, and when the driving electrode 151 closest to the first side of the capacitive touch screen is driven by the driving signal S, one-dimensional sensing of the first side of the first electrode is generated. Information 721. Please refer to FIG. 7B again, which is a schematic diagram of the second-side single-electrode driving in the two-electrode driving mode according to the present invention. The driving signal S is provided to the driving electrode 151 closest to the second side of the capacitive touch screen, and when the driving electrode 151 closest to the second side of the capacitive touch screen is driven by the driving signal S, a one-dimensional driving second-dimensional sense is generated. Test information 722. The one-dimensional driving one-dimensional sensing information 721 and 722 generated when the driving electrodes on the first side and the second side are driven are placed on the first side and the second side of the inner image 61 to form an expanded image, respectively. 71. The number of values (or pixels) of the expanded image 71 is greater than the number of values (or pixels) of the complete image 51. In an example of the present invention, the first-side one-dimensional sensing information 721 driven by a single electrode is first generated, then the internal image 61 is generated, and then the second-side one-dimensional sensing information driven by a single electrode is generated. Message 722 to form an expanded image 71. In another example of the present invention, an internally reduced image 61 is generated first, and then first- and second-side one-dimensional sensing information 721 and 722 driven by a single electrode are generated to form an expanded image 71.

In other words, the expanded image is constituted by the first-side one-dimensional sensing information driven by a single electrode, the internally reduced image, and the second-side one-dimensional sensing information driven by a single electrode. Since the value of the indented image 61 is a two-electrode drive, the average size is larger than the average value of the one-dimensional images of the first and second sides of the single-electrode drive. In an example of the present invention, the values of the one-dimensional sensing information 721 and 722 of the first side and the second side are placed on the outside of the first side and the second side of the inward image 61 after being enlarged by a ratio. The ratio may be a preset multiple, the preset multiple is greater than 1, or may be generated based on a ratio between the value of the one-dimensional sensing information driven by the two electrodes and the value of the one-dimensional sensing information driven by the single electrodes. For example, the ratio of the sum (or average) of all the values of the one-dimensional sensing information 721 on the first side to the sum (or average) of all the values of the one-dimensional sensing information 62 adjacent to the first side in the shrink image. The value of the dimensional sensing information 721 is placed outside the first side of the inner image 61 after being enlarged by this ratio. In the same way, it is the ratio of the sum (or average) of all the values of the one-dimensional sensing information 722 on the second side to the sum (or average) of all the values of the one-dimensional sensing information 62 adjacent to the second side in the shrink image. The value of the side one-dimensional sensing information 722 is placed outside the second side of the inner image 61 after being enlarged by this ratio. For another example, the foregoing ratio may be a ratio of a sum (or average) of all values of the internal image 61 to a sum (or average) of all values of the one-dimensional sensing information 721 and 722 on the first side and the second side.

In the single-electrode driving mode, each value (or pixel) of the complete image corresponds to the unitary position (or coordinates) of an overlapping position, and is the first one-dimensional position corresponding to the driving electrode overlapping at the overlapping position. (Or coordinates) the second-dimensional position (or coordinates) corresponding to the detection electrode, such as (first-dimensional position, second-dimensional position) or (second-dimensional position, first-dimensional position Location). A single external conductive object may be capacitively coupled with one or more overlaps, and the capacitive coupling with external conductive objects will produce a change in capacitive coupling, which is reflected in the corresponding value in the complete image, that is, externally The conductive objects correspond to the corresponding values in the complete image. Therefore, according to the corresponding value and the 贰 -dimensional coordinate of the external conductive object corresponding to the complete image, the centroid position (贰 -dimensional coordinate) of the external conductive object can be calculated.

According to an example of the present invention, in the single-electrode driving mode, the corresponding one-dimensional position of each electrode (the driving electrode and the detection electrode) is the position of the center of the electrode. According to another example of the present invention, in the two-electrode driving mode, the corresponding one-dimensional position of each pair of electrodes (the driving electrode and the detection electrode) is the position between the two electrodes at the center.

In the reduced image, the first one-dimensional sensing information corresponds to the central position of the first pair of driving electrodes, that is, the first one-dimensional position of the center between the first and second driving electrodes (first pair of driving electrodes). . If the position of the center of mass is simply calculated, only the position between the center of the first pair of driving electrodes and the center of the last pair of driving electrodes can be calculated. The range between the center position of the first one dimension) and the center position of the first drive electrode and the range between the center position of the last pair of drive electrodes and the center position of the last drive electrode.

Relative to the internal image, in the external image, the one-dimensional and second-dimensional sensing information correspond to the position of the center of the first and last drive electrodes, respectively. Therefore, the range ratio of the position calculated based on the external image The range of positions calculated based on the reduced image increases the range between the center position of the first pair of driving electrodes (the center of the first dimension) and the center position of the first driving electrode, and the center position of the last pair of driving electrodes and the last The range between the center positions of the drive electrodes. In other words, the range of positions calculated from the expanded image includes the calculation from the full image Out of the range of positions.

Similarly, the foregoing two-electrode driving mode can be expanded into a multi-electrode driving mode, that is, driving multiple driving electrodes at the same time. In other words, the driving signal is provided to a plurality of (all) driving electrodes in a group of driving electrodes at the same time, for example, the number of driving electrodes of a group of driving electrodes is two, three, or four. The multi-electrode driving mode includes the aforementioned two-electrode driving mode, and does not include the aforementioned single-electrode driving mode.

Please refer to FIG. 8, which is a detection method for detecting a capacitive touch screen according to the present invention. As shown in step 810, a capacitive touch screen having a plurality of driving electrodes and a plurality of detecting electrodes arranged in parallel in order is provided, wherein the driving electrodes and the detecting electrodes overlap at a plurality of overlapping positions. For example, the aforementioned driving electrodes 151 and detection electrodes 152. Next, as shown in step 820, a driving signal is provided to one of the driving electrodes and one of the driving electrodes in a single-electrode driving mode and a multi-electrode driving mode, respectively. That is, in a unipolar driving mode, the driving signal is provided to only one of the driving electrodes at a time, and in a multi-electrode driving mode, the driving signal is a group of driving electrodes that are simultaneously provided at a time. The driving electrodes, in addition to the last N driving electrodes, each driving electrode and two driving electrodes adjacent to each other constitute a group of driving electrodes that are driven simultaneously, and N is the number of driving electrodes of a group of driving electrodes minus one. The driving signal may be provided by the aforementioned driving circuit 41. Next, as shown in step 830, each time the driving signal is provided, one-dimensional sensing information is obtained by the detection electrode to obtain one-dimensional sensing of multiple multi-electrode driving in a multi-electrode driving mode. The information and one-dimensional sensing information of the first-side and second-side single-electrode driving are obtained in the single-electrode driving mode. For example, in the multi-electrode driving mode, one-dimensional sensing information of multi-electrode driving is obtained when each group of driving electrodes is provided with a driving signal. As another example, in the single electrode driving mode, the first driving electrode and the last driving electrode When the driving electrode provides a driving signal, one-dimensional sensing information of a first-side single-electrode drive and one-dimensional sensing information of a second-side single-electrode drive are obtained. The one-dimensional sensing information can be obtained by the detection circuit 42 described above. The one-dimensional sensing information includes the one-dimensional sensing information (internal image) driven by the multi-electrode and the one-dimensional sensing information driven by the single electrode on the first side and the second side. Then, as shown in step 840, one-dimensional sensing information driven by the single-electrode on the first side, one-dimensional sensing information driven by all the multi-electrodes, and one-dimensional sensing information driven by the second-side single-electrode are sequentially performed. Generate an image (external image). Step 840 may be completed by the aforementioned control circuit.

As described earlier, the potential of the driving signal in the single-electrode driving mode and the potential of the driving signal in the multi-electrode driving mode are not necessarily the same, and may be the same or different. For example, the single-electrode drive is driven by a larger first AC potential, and the ratio of the first AC potential to the second AC potential is a preset ratio relative to the second AC potential driven by the multiple electrodes. In addition, step 840 is to generate the image according to all values of the one-dimensional sensing information driven by the single electrode on the first side and the second side are multiplied by a same or different preset ratio, respectively. In addition, the frequency of the driving signal in the single-electrode driving mode is different from the frequency of the driving signal in the multi-electrode driving mode.

The number of driving electrodes of a group of driving electrodes may be two, three, or even more, which is not limited in the present invention. In a preferred mode of the present invention, the number of driving electrodes of one set of driving electrodes is two. When the number of driving electrodes of a group of driving electrodes is two, each driving electrode corresponds to a first-dimensional coordinate, and one-dimensional sensing information of each multi (dual) electrode driving corresponds to one of the driving electrodes. The first one-dimensional coordinates of the center between the driving electrodes, and the one-dimensional sensing information of the single-electrode driving on the first and second sides respectively correspond to the first one-dimensional coordinates of the first and last driving electrodes.

Similarly, the number of driving electrodes in a group of driving electrodes is multiple (more than two) Each driving electrode corresponds to a first-dimensional coordinate, and the one-dimensional sensing information of each multi-electrode driving corresponds to the center between the two driving electrodes that are the furthest apart in a group of driving electrodes of the driving electrode. The first one-dimensional coordinate of the first one-dimensional coordinate of the first and second driving electrodes corresponds to the first one-dimensional coordinate of the first and last driving electrodes, respectively.

In addition, each detection electrode corresponds to a second one-dimensional coordinate, and each value of each one-dimensional sensing information corresponds to a second one-dimensional coordinate of one of the detection electrodes.

Please refer to FIG. 9A and FIG. 9B, which are schematic diagrams for detecting that a conductive strip receives a capacitive coupling signal by driving the conductive strip. Because the signal passes through some load circuits, such as through capacitive coupling, a phase difference will occur between the signal received by the detection conductive strip and the signal before it is provided to drive the conductive strip. For example, when the driving signal is provided to the first driving conductive strip, the signal received by the first detecting conductive strip and the signal before the driving conductive strip will generate a first phase difference ψ 1, as shown in FIG. 9A, and the driving When the signal is provided to the second driving conductive strip, the signal received by the first detecting conductive strip and the signal before the driving conductive strip generates a second phase difference ψ 2, as shown in FIG. 9B. In an embodiment of the present invention, the phase difference may indicate the time when the signal passes through the load circuit, or the time difference between the detection of the capacitive coupling signal received by the conductive strip via the driving conductive strip and the signal sent by the driving conductive strip. Since the position of each driving conductive strip is different, the phase difference of the same detecting conductive strip for different driving conductive strips is also different.

、

、0、

與

的信號。 The first phase difference ψ 1 and the second phase difference ψ 2 are different according to the resistance-capacitance circuit (RC circuit) through which the driving signal passes. When the periods of the driving signals are the same, different phase differences indicate that the signals are received at different time delays. If the signal is ignored and the signal is detected directly, the starting phase of the signal measurement will be different and different results will be produced. For example, suppose the phase difference is 0, the signal is a sine wave, and the amplitude is A. When the phase detection signals are 30 degrees, 90 degrees, 150 degrees, 210 degrees, 270 degrees, and 330 degrees, | 1 / 2A |, | A |, | 1 / 2A |, | -1 / 2A will be obtained, respectively. |, | -A | and | -1 / 2A |. However, when the phase difference is 150 degrees, the phase that starts to be measured will cause a deviation, so that when the phase is 180 degrees, 240 degrees, 300 degrees, 360 degrees, 420 degrees, and 480 degrees, the detection signals will get 0,

,

, 0,

versus

signal of.

From the foregoing example, it can be seen that the delay of the starting phase of the measurement caused by the aforementioned phase difference will make the signal measurement result completely different. Whether the driving signal is a sine wave or a square wave (such as PWM), there will be similar The difference exists.

In addition, each time a driving signal is provided, it may be provided to a plurality of adjacent driving conductive strips, wherein the driving conductive strips are arranged in parallel in order. In the preferred example of the invention, it is provided to two adjacent driving conductive strips, so in one scan, n driving conductive strips are provided with a total of n-1 driving signals, each time being provided to a group of driving conductive strips. For example, the first and second driving conductive bars are provided for the first time, the second and third driving conductive bars are provided for the second time, and so on. As mentioned previously, each time a driving signal is provided, the set of driving conductive bars provided may be one, two or more, and the present invention does not limit the number of driving conductive bars provided by each driving signal. Each time the drive signal is provided, all the signals measured by the conductive strips can be combined into one-dimensional sensing information, and all the one-dimensional sensing information in one scan can be combined to form one-dimensional sensing information, which can be regarded as an image. .

Accordingly, in a first embodiment of the best mode of the present invention, different phase differences are used for different conductive bars to delay the detection signal. For example, first determine multiple phase differences, and measure the signal according to each phase difference when each group of driving conductive strips is provided with a driving signal. The phase difference on which the largest of the measured signals is based is the phase difference that is closest to the signal provided before driving the conductive strip and the signal received after detecting the conductive strip. It is referred to as the most approaching phase in the following description. difference. The measurement of the signal may be to select one of the detection conductive bars to perform the measurement according to each phase difference, or to select multiple or all detection conductive bars to perform the measurement according to each phase difference. The sum of the signals of the conductive bars is detected to determine the closest phase difference. Based on the above, the closest phase difference of each group of conductive strips can be determined. In other words, when each group of conductive strips is provided with a driving signal, all detected conductive strips are delayed after the closest phase difference of the driving signal is provided. Take measurements.

In addition, it is not necessary to measure the signals according to all the phase differences, and it is possible to measure the signals according to one phase difference among the phase differences (s) in sequence, until it is found that the measured signals increase and then decrease. Stop, where the phase difference on which the largest of the measured signals is based is the closest approaching phase difference. In this way, an image with a larger signal can be obtained.

In addition, it is also possible to first select a group of the driving conductive strips as the reference conductive strips, and other conductive strips are called non-reference conductive strips, and first detect the closest phase difference of the reference conductive strips as a level phase Then, the phase difference of the non-reference driving conductive strip that is closest to the leveling phase difference is called the most leveling phase difference. For example, a signal measured based on the level difference of a reference conductive strip is used as a level signal, and a signal measurement is performed on each phase difference of each group of non-reference driving conductive strips. The phase difference on which the leveling signal is advanced is used as the leveling phase difference of the driving conductive strip to which the driving signal is supplied. In this way, the leveling phase difference of each group of driving conductive strips can be determined, and the measurement of the delayed signal can be obtained based on the leveling phase difference of each group of driving conductive strips, and a more leveled image, that is, the difference between the signals in the image can be obtained. Very small. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal.

In the foregoing description, every time a driving signal is provided, the same phase difference is used for all the detected conductive strips. Those skilled in the art can infer, or every time a driving signal is provided, One set of detection conductive bars adopts the respective closest approach phase difference or level phase difference. In other words, each time a drive signal is provided, each phase difference of each group of detected conductive bars is measured to determine the closest approach phase difference or level phase difference.

In fact, in addition to using the phase difference to delay the measurement to obtain a larger or more accurate image, it is also possible to obtain a more accurate image with different magnifications, impedances, and measurement times.

Accordingly, the present invention proposes a signal measurement method for a touch screen, as shown in FIG. 10. As shown in step 1010, a touch screen is provided. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The bars overlap in multiple overlapping areas. In addition, as shown in step 1020, a delay phase difference is determined for each or each group of driving conductive bars. Thereafter, as shown in step 1030, a driving signal is sequentially provided to one or a group of the driving conductive strips, and the driving conductive strip provided with the driving signal and the detection conductive strip generate mutual capacitive coupling. Next, as shown in step 1040, each time the driving signal is provided, the signal of each detection combination of the provided driving signal is delayed after the corresponding phase difference is measured.

Accordingly, in the signal measurement device of the touch screen of the present invention, the aforementioned step 1030 may be implemented by the aforementioned driving circuit 41. In addition, step 1040 may be implemented by the aforementioned detection circuit 42.

In an example of the present invention, each or each group of driving phase delay phase The bit difference is selected from a plurality of predetermined phase differences, such as the aforementioned closest approaching phase difference. Each group of conductive bars refers to a group of multiple conductive bars that are simultaneously provided with a driving signal during multiple driving, and is implemented by the aforementioned drive selection circuit 141 of the drive circuit 41, for example. For example, one or a group of conductive strips of the driving conductive strips are sequentially selected as the selected conductive strip, as implemented by the driving circuit 41. Next, the retardation phase difference of the selected conductive strip is selected from a plurality of predetermined phase differences. Wherein, when the driving signal is provided to the selected conductive strip, the signal measured after delaying the delay phase difference is greater than the signal detected after delaying other predetermined phase differences. For example, it is implemented by the aforementioned detection circuit 42, and the detected delay phase difference can be stored in the storage circuit 43.

Alternatively, the above-mentioned leveling phase difference may be selected. For example, one or a group of conductive bars of the driving conductive bar is selected as the reference conductive bar, and the other bar or other group of conductive bars is used as the non-reference conductive bar, as implemented by the driving circuit 41. After that, the delay phase difference of the reference conductive strip is selected from a plurality of predetermined phase differences. When the driving signal is provided to the reference conductive strip, a signal detected after delaying the delay phase difference is greater than that after delaying other predetermined phase differences. Detected signal. Wherein, the retardation phase difference of the reference conductive strip is the aforementioned parallel phase difference. Next, a signal detected after the reference conductive strip is delayed by the delayed phase difference is used as a reference signal, and then one or a group of non-reference conductive strips of the non-reference conductive strip is sequentially selected as the selected conductive strip, and The delay phase difference of the selected conductive strip is selected from a plurality of predetermined phase differences, such as the aforementioned most level phase difference, wherein when the driving signal is provided to the selected conductive strip, the detected delay phase difference is delayed. The signal is closest to the reference signal compared to the signal detected after delaying other predetermined phase differences. The above can be implemented by the detection circuit 42.

In an example of the present invention, when the driving signal is provided to the reference conductive bar or the selected conductive bar, the signals measured by the plurality of detected conductive bars are detected by the detection. Signal measured by one of the conductive bars. In other words, the delay phase difference is selected based on the signal of the same detection conductive strip. In another example of the present invention, when the driving signal is provided to the reference conductive bar or the selected conductive bar, the signals measured by the plurality of detected conductive bars are performed by the detected conductive bars. The sum of the signals measured by at least two of the bars. In other words, the delay phase difference is selected based on the sum of the signals of the same plurality of detection conductive bars or all the detection conductive bars.

As mentioned earlier, the overlapping area of each of the driven conductive strips and each of the detected conductive strips may have a corresponding retardation phase difference. In the following description, each or each group of driving conductive bars and each overlapping or detecting group of conductive bars are used as a detection combination. In other words, the driving signal may be provided to one or more driving conductive bars at the same time, and the signal may also be measured by one or more detecting conductive bars. When a signal is generated by measurement, one or more driving conductive bars provided with the driving signal and one or more detecting conductive bars to be measured are referred to as a detection combination. For example, when a single drive or multiple drives are used, one conductive bar detects the signal value, or two conductive bars measure a difference, or three conductive bars measure a double difference. Where the difference is the difference between the signals of the two adjacent conductive strips, and the double difference is the difference between the signals of the first two conductive strips and the difference between the signals of the two conductive strips among the three adjacent conductive strips. difference.

Accordingly, in another example of the present invention, a signal measurement method for a touch screen is shown in FIG. 11. As shown in step 1110, a touch screen is provided. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The bars overlap in multiple overlapping regions. In addition, as shown in step 1120, each or each group of driving conductive strips is overlapped with each or each group of detection conductive strips as a detection combination, and as shown in step 1130, each detection is determined. Combined delay phase difference. After that, as shown in step 1140, a driving signal is sequentially provided to one or a group of the driving conductive strips, and the driving conductive strip provided with the driving signal and the overlapping detection are provided in the detection combination provided with the driving signal. The measurement of the conductive strip produces mutual capacitive coupling. Next, as shown in step 1150, each time a driving signal is provided, the signal of each detection combination of the provided driving signal is delayed after a corresponding phase difference is measured.

Accordingly, in a signal measurement device of the present invention, step 1140 may be implemented by the aforementioned driving circuit 41, and step 1150 may be implemented by the aforementioned detection circuit 42.

In an example of the present invention, step 1130 may include: sequentially selecting one of the detection combinations as the selected detection combination, which may be implemented by the aforementioned driving circuit 41; and by a plurality of predetermined phase differences. The delay phase difference of the selected detection combination is selected, wherein when the driving signal is provided to the selected detection combination, the signal measured after delaying the delay phase difference is greater than the signal detected after delaying other predetermined phase differences. , May be implemented by the aforementioned detection circuit 42.

In another example of the present invention, determining the delay phase difference of each detection combination can also be implemented as described below. One of the detection combinations is selected as the reference detection combination, the other detection combinations are selected as the non-reference detection combination, and one of the non-reference detection combinations is sequentially selected as the selected detection combination. The aforementioned driving circuit 41 is implemented. In addition, the delay phase difference of the reference detection combination is selected from a plurality of predetermined phase differences. When the driving signal is provided to the reference detection combination, the signal detected after delaying the delay phase difference is greater than delaying other predetermined phases. A signal detected after the difference, and the signal detected after the delay phase difference is delayed by using the reference detection combination as a reference signal. In addition, the selected detection is selected from a plurality of predetermined phase differences Combined delay phase difference. When the driving signal is provided to the selected detection combination, the signal detected after delaying the delay phase difference is closer to the reference than the signal detected after delaying other predetermined phase differences. signal. The above can be implemented by the aforementioned detection circuit 42.

In a first embodiment of the present invention, the aforementioned delay phase difference can be implemented by using various delay circuits. For example, choose one of multiple fixed delay lines, use a programmable digital delay element, or delay some clock signals. Those of ordinary skill in the art can understand that there are many methods that can be implemented, and the present invention does not limit the implementation method of the delay phase difference.

In a second embodiment of the present invention, the signals are measured by a control circuit, and the signals of each group of conductive strips are measured by a variable resistor respectively. The control circuit is driven according to each group. The conductive strip determines the resistance of the variable resistor. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First set multiple preset impedances, and detect a signal that detects a conductive strip when a reference conductive strip (may be one or more) is provided with a drive signal, or detect a signal that detects multiple or all conductive strips. Add up as a leveling signal. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset impedance that allows the leveling signal to fall within a preset working range can be used as the leveling impedance of the reference conductive strip. Next, when each group of non-reference conductive bars is provided with a driving signal value, the variable resistance is adjusted according to each preset impedance, and the signal of the detecting conductive bar is detected, or the multiple or all detecting bars are detected. The sum of the signals of the conductive strips is measured to compare the preset impedance of the most received level signal as the level impedance with respect to the set of non-reference conductive strips to which the driving signal is provided. In this way, the leveling impedance of each group of driving conductive strips can be determined, and the impedance of the variable resistor can be adjusted according to the leveling impedance of each group of driving conductive strips (adjusting the variable resistance to Quasi-impedance), you can get a more level image, that is, the difference between the signals in the image is small.

In the foregoing description, every time a drive signal is provided, all detection conductive strips are used with the same level impedance. Those skilled in the art can infer that the same level of impedance can be inferred. A set of detection conductive strips adopt their respective level impedances. In other words, each time a drive signal is provided, each of the preset impedances of each group of conductive strips is measured for the signal to determine the predicted impedance that is closest to the level signal, and each When a set of driving conductive strips is provided with a driving signal, the leveling impedance of each detecting conductive strip is adjusted to adjust the impedance of the variable resistor electrically coupled to each detecting conductive strip.

In addition to the aforementioned control circuit may be composed of electronic components, it may also be composed of one or more integrated circuit ICs. In an example of the present invention, the variable resistor may be built in the IC, and the resistance of the variable resistor may be controlled by a programmable program (such as firmware in the IC). For example, the variable resistor is composed of multiple resistors and controlled by multiple switches. The impedance of the variable resistor is adjusted by the on and off of different switches. Since variable resistors and programmable programs are well-known techniques , Will not repeat them here. The variable resistor in the IC can be controlled by a programmable program and can be applied to the touch panel with different characteristics by way of body modification, which can effectively reduce the cost and achieve the purpose of commercial mass production.

In a third embodiment of the present invention, the signal is measured by a control circuit, and the signals of each group of conductive bars are measured by a detection circuit (such as an integrator). The control circuit is based on Each group of driving conductive bars determines the magnification of the detection circuit, for example, controls the magnification of the amplification circuit 17 shown in FIG. 1 and FIG. 4. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First set multiple preset magnifications, and detect a detection signal when a reference conductive strip (may be one or more) is provided with a drive signal. The signal of the conductive strip is measured, or the sum of the signals of multiple or all detected conductive strips is used as a level signal. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset magnification that can cause the leveling signal to fall within a preset working range can be used as the level magnification of the reference conductive strip. Next, when each group of non-reference conductive bars is provided with a driving signal value, the detection circuit is adjusted according to each preset magnification, and the signal of the detection conductive bar is detected, or the multiple or all of them are detected. The sum of the signals of the conductive strips is detected to compare the preset magnification of the most received level signal as the level magnification relative to the set of non-reference conductive strips to which the drive signal is provided. In this way, the level magnification of each group of driving conductive strips can be determined, and the magnification of the detection circuit can be adjusted according to the level magnification of each group of driving conductive strips. A more level image can be obtained, that is, between the signals in the image. The difference is small.

In the foregoing description, every time a driving signal is provided, the same level magnification is adopted for all the detected conductive strips. Those skilled in the art can infer that, or every time a driving signal is provided, Each set of detection conductive bars adopts its own level magnification. In other words, each time a drive signal is provided, the signal is measured for each preset magnification of each group of detected conductive strips to determine the predicted magnification that is closest to the level signal. Obtain the horizontal magnification of each detected conductive strip when each group of conductive strips is provided with a driving signal.

In a fourth embodiment of the present invention, the signals are measured by a control circuit, and the signals of each group of conductive bars are measured by a detection circuit (such as an integrator). The control circuit is based on Each set of driving conductive bars determines the measurement time of the detection circuit. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First set multiple preset measurement times, and provide the reference conductive bar (may be one or more) When driving a signal, a signal for detecting a conductive strip, or a sum of signals for detecting a plurality of or all detecting conductive strips is used as a level signal. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset measurement time that allows the leveling signal to fall within a preset working range can be used as the level measurement time of the reference conductive strip. Next, when the driving signal value is provided for each group of non-reference conductive bars, the detection circuit is adjusted according to each preset measurement time, and the signal of the detected conductive bar is detected, or the multiple or The signals of all detected conductive bars are summed to compare the preset measurement time that is closest to the leveling signal as the leveling measurement time relative to the set of non-reference conductive bars that are provided with the driving signal. In this way, the level measurement time of each group of driving conductive strips can be determined, and the measurement time of the detection circuit can be adjusted according to the level measurement time of each group of driving conductive strips. A more level image, that is, the The difference between the signals is small.

In the foregoing description, each time a drive signal is provided, the same level measurement time is used for all the detected conductive strips. Those skilled in the art can infer, or it can also be used every time a drive signal is provided. Each set of detection conductive strips respectively uses its own level measurement time. In other words, each time a drive signal is provided, the signal measurement is performed for each preset measurement time of each group of detection conductive bars to determine the predicted measurement time that is closest to the level signal. This obtains the level measurement time of each detected conductive strip when a driving signal is provided for each group of driving conductive strips.

In a fifth embodiment of the present invention, the control signal determines a driving time length for each group of driving conductive strips to be provided with a driving signal according to each group of driving conductive strips. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First set multiple preset driving time lengths, and set the When a driving signal is provided for a preset driving time, a signal for detecting a conductive bar is detected, or a sum of signals of multiple or all detected conductive bars is detected as a level signal. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset driving time that can cause the leveling signal to fall within a preset working range can be used as the preset driving time of the reference conductive strip. Next, when each group of non-reference conductive bars is provided with a driving signal, the driving circuit is adjusted according to each preset driving time, and the signal of the detecting conductive bar is detected, or the multiple or all detections are detected. The signals of the conductive strips are summed to compare the preset driving time closest to the leveling signal as the leveling driving time of the group of non-reference conductive strips. In this way, the level driving time of each group of driving conductive strips can be determined, and the driving time of the driving circuit can be adjusted according to the level driving time of each group of driving conductive strips. A more level image, that is, the difference between the signals in the image can be obtained. Very small.

In the foregoing description, every time a driving signal is provided, the same level driving time is used for all the driving conductive strips. A person with ordinary knowledge in the technical field can infer, or every time a driving signal is provided, A set of driving conductive strips respectively adopt respective level driving times. In other words, each time a driving signal is provided, each group of driving conductive strips is provided with a driving signal of a certain driving time to determine the predicted driving time of the closest approaching level signal, and each of them is obtained accordingly. Level drive time when group drive conductive strips are provided with drive signals.

In a sixth embodiment of the present invention, the control signal determines a driving potential for each group of driving conductive strips to be provided with a driving signal according to each group of driving conductive strips. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First set a plurality of preset driving potentials, and set a preset value on the reference conductive bar (may be one or more). When the driving potential is provided as a driving signal, a signal for detecting a conductive strip, or a sum of a plurality of or all of the signals for detecting a conductive strip, is detected as a level signal. In addition, the leveling signal may fall within a preset working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset driving potential that can cause the leveling signal to fall within a preset working range can be used as the preset driving potential of the reference conductive strip. Next, when a driving signal is provided for each group of non-reference conductive strips, the driving circuit is adjusted according to each preset driving potential, and the signal of the detected conductive strip is detected, or the multiple or all detections are detected. The signals of the conductive strips are summed to compare the preset driving potential closest to the leveling signal as the leveling driving potential of the group of non-reference conductive strips. In this way, the level driving potential of each group of driving conductive strips can be determined, and the driving potential of the driving circuit can be adjusted according to the level driving potential of each group of driving conductive strips. A more level image, that is, the difference between signals in the image Very small.

In the foregoing description, every time a driving signal is provided, the same level driving potential is used for all the driving conductive strips. Those skilled in the art can infer, or every time a driving signal is provided, A set of driving conductive strips respectively adopt respective level driving potentials. In other words, each time a driving signal is provided, a certain driving potential is provided for each group of driving conductive strips to determine the predicted driving potential that is closest to the level signal, and each group of driving conductive strips is obtained accordingly. Level driving potential when driving signal is provided.

In a seventh embodiment of the present invention, a driving timing point at which a driving signal is provided for each group of driving conductive strips may be determined according to each group of driving conductive strips. For example, a group of the driving conductive strips is first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips. First, set a plurality of preset driving timing points, and when a reference conductive strip (may be one or more) is provided with a driving signal at a preset driving timing point, detect a signal to detect the conductive strip, or detect The sum of multiple or all detected conductive strip signals is used as a level signal. In addition, the leveling signal may fall within a predicted working range, and does not necessarily need to be an optimal or maximum signal. In other words, any preset driving timing point that can make the leveling signal fall within a preset working range can be used as the preset driving timing point of the reference conductive strip. Next, when each group of non-reference conductive bars is provided with a driving signal, the timing of the driving circuit to provide the driving signal is adjusted according to each preset driving timing point, and the signal of the detecting conductive bar is detected, or The sum of the signals of multiple or all detected conductive strips is used to compare the preset driving timing points closest to the leveling signal as the level driving timing points of the group of non-reference conductive strips. In this way, the driving timing point of each group of driving conductive strips can be determined and driven according to the driving timing point of each group of driving conductive strips, and a flatter image can be obtained, that is, the difference between the signals in the image is small.

In the foregoing description, each time a driving signal is provided, all driving conductive strips are driven at the same driving timing point. Those skilled in the art can infer, or it can be A set of driving conductive strips respectively adopt respective level driving timing points. In other words, each time a driving signal is provided, the driving signal is provided to each group of driving conductive bars at its driving time point respectively, so as to determine the predicted driving timing point that is closest to the level signal, and accordingly obtain each A driving timing point when a set of driving conductive bars are provided with a driving signal.

Those skilled in the art having ordinary knowledge can infer that in the seventh embodiment, changing the driving timing point is equivalent in effect to the delay phase difference of the adjustment detection circuit of the first embodiment. The two respectively respond to the propagation time of the signal between the driving conductive strip and the detecting conductive strip from two aspects of the driving circuit and the detecting circuit. The delay phase difference of the detection circuit can be adjusted, and the driving timing point of the driving circuit can be adjusted to enhance or reduce the strength of the received signal.

In the foregoing description, one of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, and the seventh embodiment may be selected from one or a plurality of mixed implementations. The invention is not limited. In addition, when measuring the leveling signal, one or more detection conductive strips farthest from the detection conductive strip may be selected for signal detection to generate a leveling signal. For example, the signal of the furthest detected conductive strip can be used to generate the leveling signal, or the differential signal of the furthest detected conductive strips can be used to generate the leveled signal (difference value). The difference between the first two and the last two of the conductive strips is detected to generate a leveling signal (double difference). In other words, the leveling signal may be a signal value, a difference value, or a double difference value, or may be another value generated based on one or more signals detecting the conductive bars.

Please refer to FIG. 12, which is a signal measurement method of a touch screen according to the present invention. As shown in step 1210, a touch screen is provided. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The bars overlap in multiple overlapping areas. In addition, as shown in step 1220, one or a group of driving conductive strips of the driving conductive strips are selected as the reference conductive strips, and other driving strips or other groups of driving conductive strips are selected as the non-reference conductive strips. The reference conductive strip may be the first strip or the first group of driving strips, or may be a driving strip at other positions, which is not limited in the present invention. Next, as shown in step 1230, a driving signal is provided to the reference conductive strip, and the signal of the at least one detected conductive strip is detected according to one of the parameter groups. And, as shown in step 1240, when the signal of the at least one detected conductive strip is not within a preset signal range, the at least one detected conductive strip is sequentially detected according to one of the other parameter groups. Until the signal of the at least one detected conductive bar falls within a preset signal range. In addition, as shown in step 1250, at least one signal that detects that the conductive bar falls within a preset signal range described when the reference conductive bar is provided with a driving signal is taken as A level signal is used, and the parameter set on which the reference conductive strip is based is used as the initial parameter set of the reference conductive strip. Next, as shown in step 1260, driving signals are sequentially provided to each or each group of non-reference conductive strips in sequence, and, as shown in step 1270, driving is provided in each or each group of non-reference conductive strips. In the case of signals, the signals of the at least one detection conductive strip are respectively detected according to the parameter group one in order. Then, as shown in step 1280, the initial parameter group of each non-reference conductive strip is determined, and the driving signal value is provided in each or each non-reference conductive strip, and the detection is performed according to the initial parameter group. The signal of the at least one detected conductive strip is closer to the level signal than the signal of the at least one detected conductive strip detected according to other parameter groups.

According to the aforementioned first, second, third, fourth, fifth, sixth and seventh embodiments, the parameter group may be a delay circuit, a resistance value of a variable resistor, and a detection circuit. Magnification, measurement time of the detection circuit, driving time of the driving circuit, driving potential of the driving circuit, and driving timing of the driving circuit. In a first example of the present invention, the detection circuit is connected to the at least one detection conductive strip via a variable resistor, wherein the resistance of the variable resistor is based on the initial value of the conductive strip provided with the driving signal. Parameters to change. In a second example of the present invention, the time of detecting the signal is changed according to the initial parameters of the conductive strip to which the driving signal is provided. In a third example of the present invention, the at least one detection conductive strip is amplified by an amplifier and provided to the detection circuit, and the magnification of the amplification circuit in the detection circuit is based on the conductive strip provided with the driving signal. The initial parameters are changed. In addition, in a fourth example of the present invention, the signal of the at least one detection conductive strip is detected after a delay phase difference, wherein the delay phase difference is based on the initial of the conductive strip provided with the driving signal. Parameters to change. In a fifth example of the present invention, the driving time is changed according to an initial parameter of a conductive strip to which a driving signal is provided. In a sixth example of the present invention, the driving potential is based on The initial parameters of the conductive strip to which the drive signal is supplied are changed. In a seventh example of the present invention, the driving timing point is changed according to an initial parameter of a conductive strip to which a driving signal is provided.

Accordingly, referring to FIG. 4, a signal measurement of a touch screen according to the present invention includes a touch screen, a driving circuit 41, a detection circuit 42, and a control circuit 45. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars 151 arranged in parallel and a plurality of detecting conductive bars 152 arranged in parallel. The driving conductive bars 151 and the detection conductive bars 152 overlap with each other. Overlapping area. The driving circuit 41 provides a driving signal to one or a set of driving conductive strips 151, wherein one or a set of driving conductive strips 151 of the driving conductive strips 151 is a reference conductive strip, and the other strips or other groups of driving conductive strips 151 are Non-reference conductive strip. Each time the detection signal is provided, the detection circuit 42 generates an evaluation signal of the driving conductive strip 151 provided with the driving signal from the signal of the at least one detecting conductive strip 152 according to one of the plurality of parameter groups. The control circuit 45 selects a set of initial parameter sets as the reference conductive strip from the parameter set, uses an evaluation signal generated by the detection circuit according to the initial parameter set as a leveling signal, and selects each parameter set from the parameter set. The initial parameter group of one or each non-reference conductive strip, wherein the evaluation signal generated by each or each non-reference conductive strip based on the initial parameter group is closer to the leveling signal than the evaluation signals generated by other parameter groups. In addition, the parameter set may be stored in the storage circuit 43.

The evaluation signal may be generated based on one or more signals detecting the conductive bars. For example, the evaluation signal is generated by one of the detection conductive bars. For another example, the evaluation signal is generated by adding up the signals of at least two of the detection conductive bars.

In addition, in an example of the present invention, the controller may generate an evaluation signal of the reference conductive strip by the detection circuit according to one of the parameter groups in sequence, and use the largest evaluation signal of the reference conductive strip generated. The parameter group that is used as the initial parameter of the reference conductive strip group. In another example of the present invention, the controller may sequentially generate the evaluation signals of the reference conductive strips by the detection circuit according to one of the parameter groups in sequence, and evaluate the first conductive strips that meet a condition according to the evaluation. The parameter group on which the signal is based is used as the initial parameter group of the reference conductive strip.

According to the aforementioned first, second, third, fourth, fifth, sixth and seventh embodiments, the parameter group may be a delay circuit, a resistance value of a variable resistor, and a detection circuit. Magnification, measurement time of the detection circuit, driving time of the driving circuit, driving potential of the driving circuit and driving timing of the driving circuit. In a first example of the present invention, the detection circuit is connected to the at least one detection conductive strip via a variable resistor, wherein the detection circuit changes the available parameters according to the initial parameters of the conductive strip provided with the driving signal. Resistance value of variable resistor. In a second example of the present invention, the detection circuit changes the time of the detection signal according to the initial parameters of the conductive strip to which the driving signal is provided. In a third example of the present invention, the at least one detection conductive strip is provided to the detection circuit after being amplified by an amplifier, wherein the amplifier of the detection circuit is based on the conductive strip provided with a driving signal. Initial parameters to change the magnification of the amplifier circuit. In addition, in a fourth example of the present invention, the detection circuit starts to measure the signal of the at least one detection conductive strip after a delay phase difference, wherein the detection circuit is based on the conduction of the driving signal provided. Strip the initial parameters to change the delay phase difference. In a fifth example of the present invention, the driving time is changed according to an initial parameter of a conductive strip to which a driving signal is provided. In a sixth example of the present invention, the driving potential is changed according to an initial parameter of a conductive strip to which a driving signal is provided. In a seventh example of the present invention, the driving timing point is changed according to an initial parameter of a conductive strip to which a driving signal is provided.

In the above-mentioned second example, the time of detecting the signal is changed according to the conductive bar provided with the driving signal. Similarly, in the fifth example described above, The conductive strip of the moving signal changes the driving time. Similarly, in the seventh example described above, the timing of providing the driving signal is changed according to the conductive strip to which the driving signal is provided. Detection time and drive time are related to the length of time.

In an embodiment of the present invention, the driving time and the detection time are all synchronized. In other words, in this case, the length of the detection time must be equal to the length of the driving time. To adjust the length of the drive time, adjust the length of the detection time. Adjust the length of the detection time, as well as the length of the drive time. Those of ordinary skill in the art can infer that when the driving time and the detection time are all synchronized, the energy required to drive the conductive bar within the detection time will not be wasted. That is, this embodiment has higher energy efficiency.

In another embodiment of the present invention, the driving time and the detection time are at least partially simultaneous. In some cases, the length of the detection time may be equal to the length of the driving time. However, within a part of the detection time, the corresponding driving conductive strip did not receive the driving signal. Similarly, during a part of the driving time, the detection circuit does not detect the corresponding detection conductive strip. In other cases, the length of the detection time is greater than the length of the driving time; that is, within a portion of the detection time, the corresponding driving conductive strip does not receive the driving signal. In the remaining cases, the length of the driving time is greater than the length of the detection time; that is, the detection circuit does not detect the corresponding detection conductive strip during a part of the driving time. A person of ordinary skill in the art can infer that the above-mentioned embodiment in which the driving time and the detection time are only partially simultaneous, and its energy efficiency is worse than the embodiment in which the driving time and the detection time are all synchronized.

However, in the real world, the driving signals from the driving circuit must be transmitted through the driving conductive strips and other circuits, and the detected conductive strips and other circuits must be detected, and the detection signals will arrive at the detection station after a delay time or phase difference.测 电路。 Test circuit. In other words, if driving If the time and the detection time are completely the same, the driving signal may not be received at the beginning of the detection time, and the driving signal may be continuously received after the detection time is over. Therefore, a person of ordinary skill in the art can know that the driving time and the detection time can be synchronized only when the delay time or the phase difference is known accurately. In other words, the driving time length is equal to the detection time length, but the timing of the start of the detection time is later than the driving time by the above-mentioned phase difference. Similarly, in the real world, due to the manufacturing process of the touch screen or touch panel, the material or resistance of each conductive strip is not the same. In addition, environmental factors such as humidity and temperature may not necessarily have the same effect on each conductive strip. Therefore, it is not always possible to know the above-mentioned delay time or phase difference.

It should be noted here that one advantage of simultaneous or synchronous is that it can speed up the scan time. In one example, when the driving time is longer than the detection time, even if the detection time has ended, it is still necessary to wait for the driving time to elapse before scanning the next or next set of driving electrodes. If the detection time can be simultaneously or even synchronized with the driving time, then the next or the next set of driving electrodes can be scanned immediately without waiting for the driving time.

In some embodiments of the present invention, although the length of the driving time can be adjusted, the timing point of the driving signal is a constant period. For example, you can drive the first drive electrode at t and stop driving at t + 3; drive the second drive electrode at t + 5 and stop at t + 7.5; drive the third at t + 10 The electrode stops driving at t + 12. For the first driving electrode, the driving time lasted for 3 time units. For the second driving electrode, the driving time lasted 2.5 time units. For the third driving electrode, the driving time only lasted. 2 time units. However, no matter how the driving time changes, the timing at which adjacent driving electrodes are driven is separated by 5 time units. That is, the time when the second driving electrode is driven is 5 time units away from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is two seconds away from the time when the second driving electrode is driven. The drive time differs by 5 time units.

In other embodiments of the present invention, in addition to adjusting the length of the driving time, the timing at which the driving signal is issued can also be adjusted. For example, you can drive the first drive electrode at t and stop driving at t + 3; drive the second drive electrode at t + 5.5 and stop at t + 8.5; drive the third at t + 11.5 The electrode stops driving at t + 14.5. For the first driving electrode, the driving time continued for 3 time units, for the second driving electrode, the driving time continued for 3 time units, and for the third driving electrode, the driving time also continued. 3 time units. Although the length of the driving time does not change, the timing at which adjacent driving electrodes are driven changes. That is, the time when the second driving electrode is driven is 5.5 time units different from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is 6 times the time when the second driving electrode is driven. time unit.

Please refer to FIG. 13, which is a schematic block diagram of a touch system according to an embodiment of the present invention. The touch control system includes a control module 1310 and a front-end module 1340, and a touch panel or touch screen. The above touch panel or touch screen may further include a plurality of first conductive bars or driving conductive bars or driving electrodes 151, and a plurality of second conductive bars or detecting conductive bars or detecting electrodes 152.

The control module 1310 and the front-end module 1340 may be located in a single integrated circuit, or may be located in multiple integrated circuits. If they are located in a single integrated circuit, they may also be located on the same or different chips. Both can be the same process, or they can be different processes. In short, the present invention is not limited to its implementation.

The aforementioned front-end module 1340 may include a driving module 1341 and a detecting module 1342. Please refer to the driving circuit 41 and the detecting circuit 42 in FIG. 4. In one embodiment, the driving module 1341 may include all or part of the elements of the driving circuit 41. In one example, the driving module 1341 can receive a clock signal, generate a driving signal according to the clock signal, and provide the driving signal to one, a plurality of or all of the driving electrodes 151 through a driving selection circuit. The driving signal can be a square wave, a sine wave, or any synthetic waveform. The control module 1310 may set a waveform, a potential, a driving time length, a driving timing, and the like of a driving signal according to the driving electrode 151 to be driven.

In one embodiment, the detection module 1342 may include all or part of the components of the detection circuit 42. In an example, the detection module 1342 may include a detection selection circuit to select which detection electrode or electrodes 152 are connected to. The detection module 1342 may include a variable resistor, an amplifier, an integrator, and / or an analog digital converter. The control module 1310 can set the resistance of the variable resistor, the amplification factor or gain of the amplifier, the integration time length of the integrator, and / or the delay phase difference of the integrator according to the driven driving electrode 151. Options.

Those of ordinary skill in the art understand that in one embodiment, the control options of the control module 1310 for the drive module 1341 and the detection module can be selected from the above-mentioned multiple preset parameter groups, and the parameter groups can be stored In the control module 1310 or in other memories. These control options can be preset or dynamically generated. The present invention does not limit the timing of setting parameters.

The applicant specifically pointed out that although the present invention does not limit whether or not after receiving the detection data of the detection module 1342, for example, the above-mentioned one-dimensional or unitary-dimensional sensing information, and then adjusting these sensing information for correction Environmental or process impact on sensing information. However, one of the main spirits of the present invention is to use the control module 1310 to control various control options of the front-end module 1340 in order to control the front-end module 1340 to first correct the influence of the electrode layout, environment, or manufacturing process on the sensing information.

One of the benefits of the correction in the front-end module 1340 is to avoid the influence of the sensing information caused by the electrode layout, the environment, or the process beyond the scope of subsequent corrections of the sensing information by the control module 1310.

The second benefit of the correction in the front-end module 1340 is that the parameter set that the control module 1310 needs to store or control is smaller. For example, when the touch screen has M first conductive bars 151 and N second conductive bars 152, even if the control module 1310 according to the driven first conductive bar 151, the potential of the driving signal, the driving time length, Seven parameters such as the driving timing point, the variable resistance value of the detection circuit, the magnification, the detection time length, the detection delay time or the phase difference are adjusted. In the single-electrode scanning mode, the control module 1310 only needs to control a maximum of 7M parameters. If it is necessary to perform subsequent correction operations on the image or the dimensional sensing information, the control module 1310 needs to correct MxN sensing information. Generally, the number of the second conductive bars is greater than seven. What's more, the embodiments may not necessarily regulate all the above seven parameters. Therefore, the control module 1310 needs to perform mathematical operations on the MxN sensing information at least once. Similarly, the same is true in the multi-electrode scanning mode. Therefore, performing advance correction on the front-end module 1340 can effectively reduce computing resources.

Returning to FIG. 13, when the single-electrode scanning is performed, the driving signal via the driving electrode 151A is transmitted a longer distance than the driving signal via the driving electrode 151Z. If all the options or conditions are the same, the sensing information about the driving electrode 151A should be worse than the sensing information about the driving electrode 151Z. In a relatively straightforward example, the phase difference can be adjusted so that the phase difference between the detection drive electrode 151A is greater than the phase difference between the detection drive electrodes 151Z, so that the two sensed information are leveled. Assuming that the material and process issues of each conductive strip are ignored, the phase difference of the driving electrode 151A can be detected> The phase difference of the drive electrode 151B is detected> the phase difference of the drive electrode 151C is detected> ...> the result of the phase difference of the drive electrode 151Z is detected. These phase differences may have a linear relationship. Therefore, as long as the control module 1310 knows the phase difference and the linear gradient (slope) of the detection driving electrode 151A, it can calculate the phase difference of each driving electrode 151.

However, other parameters can also be adjusted to make the two sensing information flatten. For example, the driving potential of the driving electrode 151A can be made greater than the driving potential of the driving electrode 151Z, so that the two sensed information become flat. Similarly, assuming that the material and process issues of the conductive strips are ignored, the driving potential of the driving electrode 151A> the driving potential of the driving electrode 151B> the driving potential of the driving electrode 151C> ...> the driving potential of the driving electrode 151Z can be obtained. These driving potentials may have a linear relationship. Therefore, as long as the control module 1310 knows the driving potential and the linear gradient (slope) of the driving electrode 151A, it can calculate and detect the driving potential of each driving electrode 151.

Similarly, those of ordinary skill in the art can understand that it can include, but is not limited to, the potential of the driving signal, the driving time length, the driving timing point, the variable resistance value of the detection circuit, the magnification, and the detection time length. Seven parameters such as detection delay time or phase difference are adjusted, so that the sensing information can be leveled. Assume that, due to the influence of the manufacturing process, the impedance value of a certain driving electrode 151 is particularly large, or the electrical property of the adjacent driving electrode 151 does not show a linear relationship, the control module 1310 may specifically target the driving electrode 151 or the group of driving electrodes 151 Save its parameters. For example, the driving electrodes 151A and 151Z on the first side and the second side may have different shapes or areas from other driving electrodes 151, and cannot have a linear relationship with the electrical properties of adjacent driving electrodes 151. Therefore, the control module 1310 can store its parameters specifically for the driving electrodes 151A and 151Z.

Please refer to FIG. 14A, which is a signal amount of a touch screen according to an embodiment of the present invention. For the measurement method, reference may be made to the embodiment in FIG. 4 or FIG. 13. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: Step 1410, sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and step 1420, sequentially detecting A first signal and a second signal corresponding to the first driving signal and the second driving signal are respectively generated by the signals of the at least one detection conductive strip, wherein a driving time of the first driving signal is different from A driving time of the second driving signal.

Please refer to FIG. 14B, which is a signal measurement method of a touch screen according to an embodiment of the present invention, and reference may be made to the embodiment of FIG. 4 or FIG. 13. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: in step 1430, sequentially providing a first driving signal and a second driving signal to an adjacent first group of driving conductors sequentially in accordance with a first driving time and a second driving time, respectively. And a second set of driving conductive bars. In step 1440, a third driving signal and a fourth driving signal are provided to an adjacent third group of driving conductive strips and a fourth group of driving sequentially in accordance with a third driving time and a fourth driving time, respectively. Conductive strip. Then in step 1450, sequentially detecting signals from the at least one detection conductive strip to generate a first corresponding to the first driving signal, the second driving signal, the third driving signal and the fourth driving signal, respectively. A signal, a second signal, a third signal, and a fourth signal, wherein a first time difference between the second driving time and the first driving time is different from the fourth driving time and the third driving time A second time difference between.

Please refer to FIG. 14C, which is a signal amount of a touch screen according to an embodiment of the present invention. For the measurement method, refer to the embodiments of FIG. 4, FIG. 13, and FIG. 14B. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: in step 1460, sequentially providing a first driving signal, a second driving signal, and a third driving time in order of a first driving time, a second driving time, and a third driving time, respectively. The driving signals are given to a first group of driving conductive strips, a second group of driving conductive strips and a third group of driving conductive strips adjacent to each other. In step 1470, the signals of the at least one detection conductive strip are sequentially detected to generate a first signal and a second signal corresponding to the first driving signal, the second driving signal, and the third driving signal, respectively. And a third signal, wherein a first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the fourth driving time.

Please refer to FIG. 14D, which is a signal measurement method of a touch screen according to an embodiment of the present invention, and reference may be made to the embodiments of FIG. 4, FIG. 13, FIG. 14B, and FIG. 14C. The touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: In step 1480, a first driving signal and a second driving signal are sequentially provided to a first group of driving conductive bars and a first driving timing point and a second driving timing point. The second group drives the conductive strips. And in step 1490, a first signal and a second signal corresponding to the first driving signal and the second driving signal are respectively generated from signals of the at least one detection conductive strip according to the detection, wherein the first The driving timing point is different from the second driving timing point.

In the present invention, the above-mentioned driving timing point may refer to a time difference between the start time points provided by the driving signals before and after, and may also be a time difference with respect to a fixed clock signal.

In an embodiment of the present application, the touch screen may include a A plurality of first electrodes, a plurality of second electrodes parallel to the second axis, and a plurality of dummy electrodes. In an example, the control device of the touch screen may use the above-mentioned multiple first electrodes and multiple second electrodes to perform self-capacitance detection to detect a near object that is close to or in contact with the touch screen. In another example, the control device of the touch screen may use the plurality of first electrodes and the plurality of second electrodes to perform mutual capacitance detection to detect a nearby object.

In the conventional technology, the spacing between each first electrode is the same, and the spacing between each second electrode is also the same. Generally speaking, the pitches of existing designs are about 4mm or less. As the size of the touch screen becomes larger, more and more first electrodes and second electrodes are required. When the number of electrodes increases, more winding space is needed at the edge of the touch screen, and the control device of the touch screen also needs more and more pins or contacts to connect. However, the winding space and the pins of the integrated circuit are limited. Therefore, by designing electrodes with different pitches in this application, the number of electrodes is reduced, thereby saving the winding space and the pins of the integrated circuit described above.

Please refer to FIG. 15, which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. In the upper part (a) of FIG. 15, a touch screen 1500 and a plurality of first electrodes 1510 included in the touch screen 1500 are included. In FIG. 15, the numbers of these first electrodes are 1510a, 1510b, ..., and 1510k from left to right, respectively. In other embodiments, there may be other numbers of first electrodes 1510. In one embodiment, the first electrodes 1510 are all parallel to the first axis, that is, the vertical axis of FIG. 15. Although the first electrode 1510 in FIG. 15 is only a simple line segment, those skilled in the art can understand that the shape of the first electrode 1510 can be variously modified, except that its main axis is along the first axis. It should be noted that, in FIG. 15, the plurality of second electrodes and the dummy electrodes parallel to the second axis described above are not shown.

It can be noticed that in the lower part (b) of FIG. 15, the distance between these first electrodes 1510 is specifically divided, and it is called the distance 1590. The pitch 1590ab is the distance between the first electrodes 1510a and 1510b, the pitch 1590bc is the distance between the first electrodes 1510b and 1510c, and so on, as shown in the following table.

In the embodiment shown in FIG. 15, the distance closer to the middle of the touch screen 1500 is larger, and the distance closer to the edge of the touch screen 1500 is smaller. The interval 1590 between the first electrodes 1510 in the middle of the touch screen 1500 can reach a maximum value. For example, the interval 1590ef is equal to the interval 1590fg, and the intervals 1590ef and 1590fg are the largest among all the intervals 1590. In other words, among the plurality of pitches 1590, the value of the plurality of pitches 1590 is the maximum value. However, in another embodiment of the present invention, there may be only one value with a pitch of 1590 as the maximum value.

In one embodiment, since no first electrode 1510 is located in the middle of the touch screen 1500, one of the distances 1590 having a maximum value is located in the middle of the touch screen 1500. In another embodiment, if a certain first electrode 1510 is located at the middle line of the touch screen 1500, one of the maximum distances 1590 is located at both sides of the first electrode 1510 of the middle line, such as the first electrode 1510f.

In the embodiment shown in FIG. 15, the distribution of these pitches 1590 is symmetrical left and right, and the center line of the touch screen 1500 or the first electrode 1510f is used as the axis of symmetry. The pitch 1590ef and the pitch 1590gh are the corresponding pitch 1590, and the length of both is six units. It can be seen that the space in Figure 15 A symmetrical structure is formed between the distances of 1590. However, the present application does not limit each pitch 1590 to form a left-right symmetrical structure, nor does it limit that the pitch 1590 having the maximum value must be located at or near the middle of the touch screen 1500.

One of the features of this application is that a certain first pitch is different from a certain second pitch. In one embodiment, a certain third pitch is different from the first pitch and the second pitch. In one embodiment, the first pitch and the second pitch are adjacent pitches. In another embodiment, the first pitch and the second pitch are non-adjacent pitches. In one embodiment, when the first pitch is greater than the second pitch, the second pitch is closer to the middle line of the touch screen.

The difference between adjacent distances of 1590 is called the slope of the distance. To avoid confusion, the slope of the distance can be defined as the ratio of the larger to the smaller of the adjacent distance, which is called the rising slope. Or it is defined as the ratio of the smaller to the larger of the adjacent intervals, which is called the falling slope. In the rightmost column of the table above are the rising and falling slopes of adjacent spacings.

Since in the embodiment shown in FIG. 15, the distribution of these pitches 1590 is bilaterally symmetrical, the pitch of the pitches is also symmetrical. For example, using the middle line of the touch screen 1500 or the first electrode 1510f as a symmetry axis, the slope between the distances 1590ab and 1590bc is equal to the slope between the distances 1590jk and 1590kl. In this embodiment, the closer to the middle of the touch screen 1500, the lower the rising slope and the higher the falling slope, and the farther away from the middle of the touch screen 1500, the higher the rising slope and the lower the falling slope. However, the present application is not limited to the structure in which each pitch slope forms a left-right symmetry, nor is it limited to a pitch with a 100% pitch rising or falling slope must be located at or near the middle of the touch screen.

One of the features of this application is that a certain first pitch slope is different from a certain second pitch slope. In one embodiment, a certain third pitch slope is different from the first pitch slope and the second pitch slope. In one embodiment, the first pitch slope and the second pitch slope are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes. In one embodiment, when the first pitch rising slope is greater than the second pitch rising slope, the pitch corresponding to the second pitch rising slope is closer to the middle line of the touch screen. When the first pitch falling slope is greater than the second pitch falling slope, the pitch corresponding to the first pitch is closer to the middle line of the touch screen.

In order to reduce the number of electrodes, the corresponding winding space and the pins of the integrated circuit are reduced. In an embodiment of the present application, the distance between the electrodes may be enlarged to more than 4 mm, for example, greater than 4.5 mm, so as to gradually reach a maximum distance of about 7 mm to 8 mm. The above numbers are just examples, and the present application is not limited to the above-mentioned pitch design.

If such a large distance is still maintained at the edge of the touch screen, if the object is close to the edge of the touch screen, the sensing amount of the electrode closest to the edge may be reduced to about the same as the noise value, and it may be filtered out. And because the amount of induction is quite small, it is quite difficult to calculate the position of the nearby objects. Therefore, the above-mentioned solution is proposed in the present application, so that the electrodes near the edge of the touch screen are gradually denser, so that more electrodes can sense the nearby objects, and the calculated positions can be more accurate. In addition, this application also proposes a design in which the electrodes are directly placed on the edge of the touch screen, which will be described later.

Please refer to FIG. 16, which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. Similar to the embodiment shown in FIG. 15, FIG. 16 does not show a plurality of second electrodes and dummy electrodes parallel to the second axis, but only shows a plurality of first electrodes 1610 parallel to the first axis. In this embodiment, the interval between the first electrodes 1610 is the same except for the two first electrodes 1610a and 1610z which are closest to the edge. In this design, the first electrodes 1610a and 1610z can be used to enhance the detection of nearby objects on the edge of the touch screen 1600, and the number of the first electrodes 1610 can be reduced as much as possible.

In one embodiment, the first electrodes 1610a and 1610z are located in the middle of the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600. In one embodiment, the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600 is equal to the distance between all the first electrodes 1610 except the first electrodes 1610a and 1610z.

When performing mutual capacitance detection, the position of the nearby object on the touch screen 1600 can be calculated according to the position of each first electrode 1610 and the amount of induction received by it. When the shape design of a certain first electrode 1610 is the same as the shape design of other first electrodes 1610, there is no need to modify the inductance of a certain first electrode 1610. For example, in the embodiment shown in FIG. 16, the shape of the first electrode 1610a and the other first electrodes 1610 are the same long shape, and the area is also the same. Therefore, it is not necessary to modify the inductance of the first electrode 1610a. . However, when the shape design of a certain first electrode is different from that of the other first electrodes, it is necessary to correct its inductance.

Please refer to FIG. 17, which is a schematic diagram of a part of an electrode structure of a touch screen according to an embodiment of the present application. Similar to the embodiment shown in FIG. 15, FIG. 17 does not show a plurality of second electrodes and dummy electrodes that are parallel to the second axis, but only shows those that are parallel to the first axis (the vertical axis in the figure). A plurality of first electrodes 1710. The embodiment shown in FIG. 17 includes four first electrodes 1710. The leftmost electrode is the first electrode 1710a, and its position in the second axial direction (horizontal axis in the figure) is 0. The first electrode 1710a includes a plurality of triangular conductive pieces 1712. Since the first electrode 1710a is located on the left edge of the touch screen, the conductive sheet 1712 is located on the right side of the first electrode 1710a and extends to the right by about 2.5 units.

The first electrode 1710b is located at a position of 6 in the second axial direction, and includes a plurality of quadrangular conductive pieces, each of which is composed of two left and right triangular conductive pieces 1722 and 1724. The triangular conductive sheet 1722 on the left side has the same shape as the triangular conductive sheet 1712, but faces in opposite directions, and extends from the first electrode 1710b to the left by about 2.5 units in length. Triangular conductive sheet 1724 and triangular conductive sheet on the right 1732 has the same shape, but faces in opposite directions, and extends from the first electrode 1710b to the right by about 4.5 units in length.

From FIG. 17, three types of first electrodes 1710 can be seen. The first electrode 1710a belongs to the first type. It is located on the edge of the touch screen, and its electrode shape can only be biased to one side. The first electrode 1710b belongs to the second type, which is located in the middle of the touch screen, but because the distance between the left and right sides is different, the electrode shape is asymmetric. The first electrode 1710c belongs to a third type. It is located in the middle of the touch screen, and because the distance between the two sides is the same, the electrode shape is symmetrical.

Assume that there are the same proximity objects, and when they are in close proximity to different locations 1702, 1704, and 1706, respectively, due to the different electrode shapes of the first electrodes 1710 at each location, their sensing amounts will be different. For example, in the embodiment shown in the third figure, the ratio of the area of the first electrodes 1710a, 1710b, and the conductive sheet related to 1710c is 2.5 to 7 to 9. When the proximity object is at the position 1702, the area of the conductive sheet 1712 of the first electrode 1710a is smaller than the total area of the conductive sheets 1722 and 1724 of the first electrode 1710b when the proximity object is at position 1704. In addition, when the proximity object is at the position 1702, the first electrode 1710c may no longer detect its sensing amount. However, when the proximity object is at the position 1704, the first electrodes 1710a and 1701c can also detect the sensing amount.

Those of ordinary skill in the art can understand that the embodiment shown in FIG. 17 uses a triangular conductive sheet as the shape of the electrode, but the present application is not limited to such an electrode shape. For example, electrode shapes such as hexagonal, octagonal, N-sided, square spiral, circular spiral, and the like can also be used.

Compared with the embodiments shown in FIG. 15 and FIG. 16, the embodiment shown in FIG. 17 includes many first electrodes 1710 a located at the edge of the touch screen. Compared with the first electrodes 1610a and 1610z shown in FIG. 16, the first electrode 1710a is closer to the edge of the touch screen. Software has better detection effect.

It has been premised that, because the shape design of the first electrodes 1710a and 1710b of the first type and the second type is different, it is necessary to modify the inductance of the two types of electrodes. The correction step can multiply the inductance by a coefficient, and the coefficient can be obtained by looking up a table or calculated according to a certain function. In an embodiment, the function may be a linear function or a quadratic function. In one embodiment, the coefficient may be related to the area of the conductive sheet, or related to the area of the conductive sheet of an adjacent electrode, and also related to the distance between adjacent electrodes.

In addition to the digital processing part, the correction can be performed by multiplying the inductance by the coefficient, and the analog front end (AFE) circuit can also be corrected first. This application may include a correction step in the digital front end, a correction step in the digital processing step, or a correction step in both. As long as these correction steps and / or coefficients are related to different pitches between adjacent electrodes, to different sensing areas caused by different pitches, or to different sensing sheet areas, all fall within the scope of this application. in.

In one embodiment, when mutual capacitance detection is used, a driving signal is sequentially provided to the second electrode parallel to the second axis, and then the sensing amount of each first electrode is measured in order to detect a nearby object. In connecting each second electrode driving part, the analog front-end circuit can control the driving time of the driving signal and the voltage of the driving signal. In the part connected to each first electrode, the analog front-end circuit can provide a variable resistor, an amplifier, and an integrator to measure the above-mentioned inductance. Therefore, the analog front-end circuit can control the resistance value of the variable resistor, the gain value of the amplifier, the integration timing of the integrator (or the phase difference or time difference with the driving signal), and the integration time.

Therefore, according to each second electrode provided with a driving signal, the analog front-end circuit can adjust one of the above parameters or any combination thereof for adjusting the amount of induction. In an embodiment, the amplifier gain coefficient of the first electrode 1710a can be adjusted to 9 / 2.5 times the amplifier gain coefficient of the first electrode 1710c and the amplifier gain coefficient of the first electrode 1710b can be adjusted to The first electrode 1710c has a gain factor of 9/7. In another embodiment, the resistance value of the variable resistance of the first electrode 1710b can be adjusted to 7 / 2.5 times the value of the variable resistance group of the first electrode 1710a, and the resistance of the variable resistance of the first electrode 1710b can be adjusted. The value is adjusted to 9 / 2.5 times the value of the variable resistance group of the first electrode 1710a.

When mutual capacitance is used to detect nearby objects, the difference between the detected values of the adjacent first electrodes 110 and / or the double difference (that is, the difference between the two differences) can be used to subtract noise interference. , And then make subsequent judgments. The above-mentioned difference and / or double difference are subtracted from the adjusted value. Similarly, in one embodiment, the adjustment can be performed directly on the analog front-end circuit, and the difference and / or double difference calculation can also be performed directly on the analog front-end circuit. Of course, it is also possible to leave the part to be processed digitally before performing the operations of adjustment and difference and / or brushing.

In the foregoing embodiment, the plurality of pitch slopes other than 100% are different. In an embodiment, for convenience of design or calculation, the pitch slope other than 100% can be set within a certain range. For example, the pitch slope can be set to 5% ± 1%. In this way, the aforementioned adjustment process can be simplified. If the pitch slope is set small, or the location of a less accurate proximity object can be accepted, the pitch slope can even be ignored.

One of the features of this application is that a certain first pitch slope is equal to a certain second pitch slope, and the two are not 100%. In an embodiment, a difference between the first pitch slope and the second pitch slope falls within a range. In an embodiment, in an embodiment, the first pitch slope and the first pitch The two pitch slopes are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes.

In the embodiments of the first to third figures, the first electrode parallel to the first axis is used as an illustration. However, those of ordinary skill in the art can understand that the above-mentioned different pitch designs can also be applied to the second electrode parallel to the second axis at the same time, so as to reduce the winding space of the second electrode and the pin of the integrated circuit.

Please refer to FIG. 18, which is a schematic diagram of a part of an electrode structure of a touch screen according to an embodiment of the present application. Different from the first three figures, the fourth figure includes three types of first electrodes 1810 and second electrodes 1820.

FIG. 18 shows the upper left corner of the touch screen, and the second electrode 1820a is located at the upper edge of the touch screen. Those of ordinary skill in the art can understand that the first electrode 1810 and the second electrode 1820 may be located on the same substrate, or may be located on different substrates. When located on different substrates, bridges may not be needed between the conductive sheets of the second electrode 1820. When located on the same substrate, one of the first electrode 1810 and the second electrode 1820 must bridge between the conductive sheets in order to electrically couple the conductive sheets. The second electrode 1820 may also be connected to the control device from the left side, instead of being connected to the control device from the right side. In order to facilitate drawing and understanding, the bridge shown in FIG. 18 is connected between the conductive sheets of the second electrode 1820. Those skilled in the art can understand that FIG. 18 is only one of the embodiments. This can be applied to the changes described above.

The second electrode 1820a is the same as the first electrode 1810a, which is the first type described above, both of which are located on the edge of the touch screen, so the related conductive sheet or electrode design includes only half edges. The second electrode 1820b is the same as the first electrode 1810b, which is the second type described above, and the related conductive sheet is a quadrangle. Compared with the first electrode 1710b shown in FIG. 17, the first electrode shown in FIG. 18 The conductive sheet of 1810b is not a symmetrical rhombus. The second electrode 1820c is the same as the first electrode 1810c, and is the third type described above.

When the same driving signal is transmitted to the second electrodes 1820a and 1820b, respectively, since the conductive sheet areas of the two are different from the other second electrodes 1820, different induction values will be generated for the same first electrode 1810. As described above, the present application can adjust the sensing value by analogy the front end and / or the digital processing part, and the above adjustment is performed according to the different second electrode 1820 provided with the driving signal.

In one embodiment, the voltage value when the second electrode 1820a is driven may be adjusted to be higher than the voltage value when the second electrode 1820b is driven. The voltage value when the second electrode 1820b is driven can be adjusted to be higher than the voltage value when the second electrode 1820c is driven. In another embodiment, when the same driving signal is provided to the second electrode 1820a, the analog front-end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is provided to the second electrode 1820b. When the same driving signal is provided to the second electrode 1820b, the analog front-end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is provided to the second electrode 1820c.

Those of ordinary skill in the art can understand that in the receiving part of the analog front-end circuit, in addition to being adjusted for different second electrodes 1820 being driven, it can also be adjusted for different first electrodes 1810 at the same time. In one embodiment, assuming that there are M first electrodes 1810 and N second electrodes 1820, for a complete scan of the touch screen, the analog front-end circuit can control a maximum of MxN groups of coefficients, and each group of coefficients can include the above coefficients. One of these or any combination thereof, these coefficients may include, but are not limited to, the driving time of the driving signal at the driving end and the voltage of the driving signal, and the resistance value of the variable resistor at the receiving end, the gain value of the amplifier, and the integration timing of the integrator ( (Also called the phase difference or time difference with the drive signal), and the product Coefficient by time length.

In some embodiments, the driving signals may be provided to two or more sets of the second electrodes 1820 at the same time, and the number of the above-mentioned coefficient groups may be at most the number of the sets of the driven second electrodes 1820 and N product. Those of ordinary skill in the art can understand that in some embodiments, it may not be necessary to modify for each coefficient group.

According to the above embodiments and possible variations, the present application proposes a touch screen with electrode designs with different pitches, and a method for detecting mutual capacitance thereof. According to the touch screen made according to the present application, the distance between the electrodes can be widened and the number of electrodes can be reduced. At the same time, the detection performance of the edge of the touch screen can be maintained or even improved, so as to reduce the winding space and the pin positions of the integrated circuit to be occupied. .

In one embodiment of the present invention, a signal measurement device for a touch screen is provided, which may be a front-end module 1340 of FIG. 13. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips in sequence. The detection circuit sequentially detects a signal from the at least one detection conductive strip to generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The driving time of the first driving signal is different from the driving time of the second driving signal.

In another embodiment of the present invention, a signal measurement method for a touch screen is provided, which may be the measurement method of FIG. 14A. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and The detection conductive strips are overlapped in a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips in sequence; and sequentially detecting by the at least one detection Measuring the signals of the conductive strip to generate a first signal and a second signal respectively corresponding to the first driving signal and the second driving signal, wherein a driving time of the first driving signal is different from the second driving signal. Driving time.

In one embodiment of the present invention, a signal measurement device for a touch screen is provided, which may be a front-end module 1340 of FIG. 13. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips in sequence. The detection circuit sequentially detects a signal from the at least one detection conductive strip to generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. At least one of the following conditions or any combination thereof is established: the detection circuit is connected to the at least one detection conductive strip through a variable resistor, and when the detection circuit generates the first signal, the variable resistor Is set to a first resistance value, and when the detection circuit generates the second signal, the variable resistance is set to a second resistance value, the first resistance value is different from the second resistance value; The detection circuit uses a first detection time length to generate the first signal, and the detection circuit uses a second detection time length to generate the second signal, wherein the first detection time length is different from the second detection time length. Detection time length; the detection circuit is connected to at least one detection conductive strip through an amplifier, and when the detection circuit generates the first signal, the amplifier is set to a first magnification value, the detection When the circuit generates the second signal, the amplifier is set to a second magnification value, and the first magnification value is different from the second magnification value; The detection circuit generates the first signal after a first delay phase difference, and the detection circuit generates the second signal after a second delay phase difference, wherein the first delay phase difference is different from the first delay phase difference. Two delayed phase differences; a potential of the first driving signal is different from a potential of the second driving signal; and a driving time of the first driving signal is different from a driving time of the second driving signal.

In another embodiment of the present invention, a signal measurement method for a touch screen is provided. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips in sequence; and sequentially detecting by the at least one detection Measuring the signals of the conductive strip to generate a first signal and a second signal respectively corresponding to the first driving signal and the second driving signal, wherein at least one of the following conditions or any combination thereof is established: the detection circuit Connected to the at least one detection conductive strip through a variable resistor, and when the detection circuit generates the first signal, the variable resistor is set to a first resistance value, and the detection circuit generates the second signal When the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detection circuit uses a first detection time length to generate the first signal, the The detection circuit uses a second detection time length to generate the second signal, wherein the first detection time length is different from the second detection time length; the detection circuit is connected to at least one of the detection via an amplifier. Test conductive strip, When the detection circuit generates the first signal, the amplifier is set to a first magnification value, and when the detection circuit generates the second signal, the amplifier is set to a second magnification value, the first magnification value Different from the second magnification value; the detection circuit generates the first signal after a first delay phase difference, and the detection circuit passes Generating the second signal after a second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; a potential of the first driving signal is different from a potential of the second driving signal; and The driving time of the first driving signal is different from the driving time of the second driving signal.

According to an embodiment of the present invention, a touch system is provided, including the touch screen and the signal measurement device described above.

In an embodiment, the driving time of the first driving signal and the driving time of the second driving signal are two parameter values among a plurality of parameter groups.

In an embodiment, a time length ratio of the driving time of the first driving signal to the driving time of the second driving signal corresponds to one or a combination of the following parameters: the first group of the driving conductive strips and the first An area ratio of two sets of the driving conductive strips; and a distance between the first set of the driving conductive strips and an adjacent driving conductive strip, and a distance between the second set of the driving conductive strips and an adjacent driving conductive strip. proportion.

In an embodiment, a ratio of a driving time of the first driving signal to a potential of the second driving signal corresponds to one or a combination of the following parameters: the first group of the driving conductive strips and the second group of the An area ratio of the driving conductive strips; and a pitch ratio of the distance between the first group of driving conductive strips and the adjacent driving conductive strip and the distance between the second group of driving conductive strips and the adjacent driving conductive strip.

In one embodiment, the detection circuit generates the first signal using a first detection time length and generates the second signal using a second detection time length. The first detection time corresponds to the driving time of the first driving signal, and the second detection time corresponds to the driving time of the second driving signal.

In one embodiment, the first detection time is the same as the driving time of the first driving signal, the second detection time is the same as the driving time of the second driving signal, and the first detection time is different from the driving time. Second detection time.

In one embodiment, the first detection time is greater than the driving time of the first driving signal, and the second detection time is greater than the driving time of the second driving signal.

In one embodiment, the detection circuit generates the first signal after a first delay phase difference, and generates the second signal after a second delay phase difference, wherein the first delay phase difference Different from this second delay phase difference.

In one embodiment, the first group of driving conductive strips includes one or more continuous driving driving strips, and the second group of driving conductive strips includes one or more continuous driving driving strips. The first group of The driving conductive strip contains the same number of driving conductive strips as the second group of driving conductive strips.

In an embodiment, the first group of the driving conductive strips and the second group of the driving conductive strips do not include the driving conductive strips on either side of the touch screen.

In one embodiment, the driving circuit and the detecting circuit are part of a front-end module.

In one embodiment of the present invention, a signal measurement device for a touch screen is provided, which may be a front-end module 1340 of FIG. 13. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to a first group of the driving conductive strips at a first driving timing point and a second driving timing point, respectively. And a second set of the driving conductive strips. The detection circuit sequentially detects a signal from the at least one detection conductive strip to generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The first driving timing point is different from the second driving timing point.

In another embodiment of the present invention, a signal measurement method for a touch screen is provided, which may be the measurement method of FIG. 14D. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group in sequence at a first driving timing point and a second driving timing point, respectively. The driving conductive strip; sequentially detecting a signal of the at least one detecting conductive strip to generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively, wherein the first A driving timing point is different from the second driving timing point.

In one embodiment of the present invention, a signal measurement device for a touch screen is provided, which may be a front-end module 1340 of FIG. 13. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to an adjacent first group of the driving conductive strips and a second group of the driving conduction in sequence at a first driving time and a second driving time, respectively. article. The driving circuit sequentially provides a third driving signal and a fourth driving signal to an adjacent third group of the driving conductive strips and a fourth group of the driving conduction sequentially in a third driving time and a fourth driving time. article. The detection circuit sequentially detects signals corresponding to the first driving signal, the second driving signal, and the first driving signal from the at least one detection conductive strip. A first signal, a second signal, a third signal, and a fourth signal of the three driving signals and the fourth driving signal. A first time difference between the second driving time and the first driving time is different from a second time difference between the fourth driving time and the third driving time.

In another embodiment of the present invention, a signal measurement method for a touch screen is provided, which may be the measurement method of FIG. 14B. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to an adjacent first group of the driving conductive strips and a second A group of the driving conductive strips; sequentially providing a third driving signal and a fourth driving signal to an adjacent third group of the driving conductive strips and a fourth group in a third driving time and a fourth driving time, respectively; The driving conductive strip; and sequentially detecting a signal corresponding to the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal by the signals of the at least one detecting conductive strip, respectively. A signal, a second signal, a third signal, a fourth signal, wherein a first time difference between the second driving time and the first driving time is different from the fourth driving time and the third driving time A second time difference in drive time.

In one embodiment of the present invention, a signal measurement device for a touch screen is provided, which may be a front-end module 1340 of FIG. 13. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement device includes: a driving circuit and a detection circuit. The driving circuit sequentially provides a first driving signal, a second driving signal and a third driving signal in sequence at a first driving time, a second driving time and a third driving time, respectively. The driving signal is given to a first group of the driving conductive strips, a second group of the driving conductive strips and a third group of the driving conductive strips adjacent to each other. The detection circuit sequentially detects a signal corresponding to the first driving signal, the second driving signal, and the third driving signal, a second signal and A third signal. A first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the second driving time.

In another embodiment of the present invention, a signal measurement method for a touch screen is provided, which may be the measurement method of FIG. 14C. The above touch screen includes a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel. The driving conductive strip and the detecting conductive strip overlap in a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal, a second driving signal, and a third driving signal to an adjacent one in sequence at a first driving time, a second driving time, and a third driving time, respectively. A first group of the driving conductive strips, a second group of the driving conductive strips, and a third group of the driving conductive strips; and sequentially detecting signals generated by the at least one detected conductive strip respectively corresponding to the first driving A first signal, a second signal and a third signal of the signal, the second driving signal and the third driving signal, wherein a first time difference between the second driving time and the first driving time A second time difference between the third driving time and the second driving time.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of patent application for the present invention; all other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the following The scope of patent applications.

Claims (14)

A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping regions. Among the plurality of spaces between the plurality of detection conductive strips, at least two adjacent spaces are different. A first space among the plurality of spaces is larger than a first space. Two pitches, the first pitch is closer to the center of the touch screen than the second pitch; and a signal measuring device further includes: a driving circuit that sequentially provides driving signals to the plurality of driving conductive strips; and a detection The detection circuit sequentially detects the signals of the plurality of detection conductive strips to generate a plurality of induction values, and adjusts the induction values of the plurality of detection conductive strips according to the distances corresponding to the plurality of detection conductive strips. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping areas. Among the plurality of spaces between the plurality of detection conductive strips, at least two adjacent spaces are different, in addition to the two spaces closest to the edge, the other spaces Are the same; and a signal measuring device, further comprising: a driving circuit that sequentially supplies driving signals to the plurality of driving conductive strips; and a detection circuit that sequentially detects signals from the plurality of detecting conductive strips In order to generate multiple sensing values, and adjust the sensing values of the plurality of detected conductive strips according to the distances corresponding to the plurality of detected conductive strips. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The bars are overlapped in a plurality of overlapping areas. Among the multiple spaces between the plurality of detecting conductive bars, at least two adjacent spaces are different. The multiple spaces are symmetrical according to the center line of the touch screen. And a signal measuring device, further comprising: a driving circuit that sequentially provides driving signals to the plurality of driving conductive strips; and a detection circuit that sequentially detects signals from the plurality of detecting conductive strips to generate Multiple sensing values, and adjusting the sensing values of the plurality of detected conductive strips according to the distances corresponding to the plurality of detected conductive strips. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips overlap in a plurality of overlapping areas. Among the plurality of spaces between the plurality of detection conductive strips, at least two adjacent spaces are different, wherein the plurality of spaces are between 4mm and 8mm; and A signal measurement device further includes: a driving circuit that sequentially provides driving signals to the plurality of driving conductive strips; and a detecting circuit that sequentially detects signals from the plurality of detecting conductive strips to generate a plurality of The sensing value, and adjusting the sensing value of the plurality of detected conductive strips according to the distances corresponding to the plurality of detected conductive strips. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping areas. Among the plurality of spaces between the plurality of detected conductive strips, at least two adjacent spaces are different. The plurality of conductive strips include two An edge conductive strip, in which a third conductive strip parallel to the edge conductive strip among the plurality of conductive strips includes a plurality of non-parallel quadrangular rectangular conductive pieces; and a signal measuring device, further including: a driving circuit, in order Providing driving signals to the plurality of driving conductive strips; and a detection circuit for sequentially detecting signals from the plurality of detected conductive strips to generate a plurality of sensing values, and according to the plurality of detected conductive strips, Spacing to adjust the sensing values of the plurality of detected conductive bars. A touch control system includes: a touch screen, further comprising a plurality of conductive strips arranged in parallel and a plurality of driving conductive strips arranged in parallel on one side of the touch screen, and the driving conductive strips and The detection conductive strips described above are overlapped in a plurality of overlapping areas, wherein any two adjacent ones of a plurality of intervals between the plurality of detection conductive strips are different from each other; and a signal measuring device, further comprising: a A driving circuit sequentially providing driving signals to the plurality of driving conductive strips; and a detecting circuit sequentially detecting signals from the plurality of detecting conductive strips to generate a plurality of sensing values, and according to the plurality of detections The spacing corresponding to the conductive bars adjusts the sensing values of the plurality of detected conductive bars. For example, for a touch system with the scope of claims 1, 3, 4, or 5, any two adjacent intervals of the plurality of intervals are different. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping regions. Among the plurality of pitches between the plurality of driving conductive strips, at least two adjacent pitches are different, wherein a first pitch among the plurality of pitches is greater than a second pitch. Spacing, the first spacing is closer to the center of the touch screen than the second spacing; and a signal measuring device further includes: a driving circuit that adjusts the plurality of drivers according to the spacing corresponding to the plurality of driving conductive bars The voltage values of the driving signals sent from the conductive strips, and sequentially providing the driving signals to the plurality of driving conductive strips; and a detection circuit, which sequentially detects the signals of the plurality of detected conductive strips to generate multiple inductions value. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping areas. Among the plurality of spaces between the plurality of driving conductive strips, at least two adjacent spaces are different. Among them, except for the two spaces closest to the edge, the other spaces are uniform. The same; and a signal measuring device, further comprising: a driving circuit, adjusting the voltage values of the driving signals issued by the plurality of driving conductive strips according to the distances corresponding to the plurality of driving conductive strips, and sequentially providing the driving signals The plurality of driving conductive strips are provided; and a detection circuit sequentially detects signals from the plurality of detected conductive strips to generate a plurality of sensing values. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The bars are overlapped in a plurality of overlapping areas. Among the multiple spaces between the plurality of driving conductive bars, at least two adjacent spaces are different. The multiple spaces are symmetrical according to a center line of the touch screen. And a signal measuring device, further comprising: a driving circuit, adjusting the voltage values of the driving signals emitted by the plurality of driving conductive strips according to the distances corresponding to the plurality of driving conductive strips, and sequentially providing the driving signals to the driving signals; A plurality of driving conductive bars; and a detection circuit, which sequentially detects signals from the plurality of detected conductive bars to generate a plurality of sensing values. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping regions. Among the plurality of pitches between the plurality of driving conductive strips, at least two adjacent pitches are different, wherein the plurality of pitches are between 4mm and 8mm; and The signal measuring device further includes: a driving circuit that adjusts the voltage values of the driving signals issued by the plurality of driving conductive strips according to the distances corresponding to the plurality of driving conductive strips, and sequentially provides the driving signals to the plurality of driving conductive strips. Driving a conductive strip; and a detection circuit, which sequentially detects signals from the plurality of detected conductive strips to generate a plurality of sensing values. A touch system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel and a plurality of detecting conductive bars arranged in parallel, and the driving conductive bars and the detected conductive bars The strips are overlapped in a plurality of overlapping regions. Among the plurality of spaces between the plurality of driving conductive strips, at least two adjacent spaces are different. The plurality of conductive strips include two edges located at the edge of the touch screen. A conductive strip, in which a third conductive strip that is adjacent to the edge conductive strip in parallel among the plurality of conductive strips includes a plurality of non-parallel quadrangular quadrangular conductive pieces; and a signal measuring device, further comprising: a driving circuit, according to the plurality The pitch corresponding to the driving conductive strips, adjusting the voltage values of the driving signals sent by the driving conductive strips, and sequentially providing driving signals to the driving conductive strips; and a detection circuit, which sequentially detects The plurality of detection signals of the conductive bars generate a plurality of sensing values. A touch control system includes: a touch screen, and further comprising a plurality of conductive bars composed of a plurality of driving conductive bars arranged in parallel to one side of the touch screen and a plurality of detecting conductive bars arranged in parallel. The detection conductive strips are overlapped in a plurality of overlapping areas, and at least two adjacent pitches among a plurality of pitches between the plurality of driving conductive strips are different; and a signal measuring device further includes: A driving circuit that adjusts the voltage values of the driving signals issued by the plurality of driving conductive strips according to the distances corresponding to the plurality of driving conductive strips, and sequentially provides the driving signals to the plurality of driving conductive strips; and a detection The circuit sequentially detects signals of the plurality of detection conductive bars to generate a plurality of sensing values. For example, for a touch system with a patent scope of item 8, 10, 11, 12, or 13, any two adjacent ones of the plurality of intervals are different.