CN106201140A - touch device and sensing method thereof - Google Patents

Abstract

The invention discloses a touch device and a sensing method thereof, which have a mutual capacitance mode and a self-capacitance mode. And in the mutual capacitance mode, the data signal is output by the ith first data line. At least one of the M scan lines outputs a scan signal sequentially. When the kth scanning line outputs a scanning signal, the first sensing data on the second data line is received. The first sensing data is a result of mutual capacitance measurement between a sensing unit coupled to the (j + 1) th second data line and a sensing unit coupled to the ith first data line. And switching the output data signal of the (i + 1) th first data line. When the k-th scanning line outputs the scanning signal, the second sensing data on the second data line is received. The second sensing data is a result of mutual capacitance measurement between the sensing unit coupled to the (j + 1) th second data line and the sensing unit coupled to the (i + 1) th first data line.

Description

Touch device and sensing method thereof

technical field

The present invention relates to a touch device and a sensing method thereof, in particular to a touch device capable of switching between a mutual-capacitance mode and a self-capacitance mode and a sensing method thereof.

Background technique

With the development of technology, along with the preservation of mobile payment and private data, the security of product data must be restricted through appropriate user authentication mechanisms (Authentication). Access to ensure the security of long-term stored data, and capacitive fingerprint recognition is easier to integrate into mobile devices, and at the same time it can perform biometric identification to provide higher security.

As electronic devices become thinner and lighter, if mutual capacitive touch sensing is used, the driving metal layer for transmitting touch sensing signals and the sensing metal layer for sensing touch signals are first designed on the same metal layer. layer. Although the purpose of reducing the volume and cost is achieved, the area of the driving metal layer and the sensing metal layer is reduced, resulting in a decrease in the radiation energy of the driving metal layer and a decrease in the sensing value of the sensing metal layer, thereby reducing the ability of touch sensing. . When this touch sensing technology is used in, for example, a fingerprint reader, it may cause problems such as insufficient sensing capability of fingerprint features, identification failure, and the like.

Contents of the invention

The present invention provides a touch control device and a sensing method thereof, so as to solve the problem in the prior art that the radiant energy of the driving metal layer decreases, and the sensing capacity of the sensing metal layer decreases, which causes the sensing ability to decrease.

The sensing method of the touch device disclosed in the present invention is applicable to the sensing electrode layer. The sensing electrode layer has a plurality of sensing units, M scanning lines and N data lines. The sensing units are arranged into a sensing array of M columns and N rows, wherein the sensing units in each column are electrically connected to one of the M scanning lines, and the sensing units in each row are electrically connected to one of the N data lines. A data line is defined as a plurality of first data lines and a plurality of second data lines, and the i-th first data line in the first data line is located in the j-th and j+1-th second data lines in the second data line between the lines, and the j+1th second data line is located between the i-th and i+1th first data lines, the sensing method includes a mutual capacitance mode and a self-capacitance mode, wherein in the mutual capacitance mode, there is The data signal is output from the ith first data line. At least one of the M scanning lines outputs a scanning signal sequentially. When the k-th scan line in the M scan lines outputs the scan signal, the first sensing data on each second data line is received, wherein the first sensing data on the j+1th second data line is the k-th column Among the sensing units, the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the ith first data line are the results of mutual capacity measurement, and each of the kth column The sensing unit is electrically connected to the kth scan line. Switching to output the data signal from the i+1th first data line. When the k-th scan line in the M scan lines outputs the scan signal, the second sensing data on each second data line is received, wherein the second sensing data on the j+1th second data line is the k-th column Among the sensing units, the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the i+1th first data line are the results of mutual capacity measurement.

The touch device disclosed in the present invention includes a sensing electrode layer. The sensing electrode layer has a plurality of sensing units, M scanning lines, N data lines and a control unit. Multiple sensing units are arranged into a sensing array with M columns and N rows. The sensing units of each column in the sensing array are electrically connected to one of the M scanning lines. The sensing units of each row in the sensing array are electrically connected to one of the N data lines. The data lines are defined as a plurality of first data lines and a plurality of second data lines. The i-th first data line among the first data lines is located between the j-th and j+1-th second data lines among the second data lines, and the j+1-th second data line is located at the i-th and between the i+1th first data line. The control unit operates in mutual capacity mode and self capacity mode. In the mutual capacity mode, the control unit outputs the data signal from the ith first data line, and sequentially outputs the scan signal from at least one of the M scan lines. When the kth scan line among the M scan lines outputs a scan signal, the control unit receives the first sensing data on each second data line. The control unit switches to output the data signal from the (i+1)th first data line, and sequentially outputs the scan signal from at least one of the M scan lines. When the kth scanning line among the M scanning lines outputs the scanning signal, the control unit receives the second sensing data on each second data line, wherein the first sensing data on the j+1th second data line is the first sensing data on the j+1th second data line Among the sensing units in column k, the mutual capacity measurement results of the sensing unit electrically connected to the j+1 second data line and the sensing unit electrically connected to the i first data line, the j+1th The second sensing data on the second data line is the sensing unit electrically connected to the j+1th second data line and the sensing unit electrically connected to the i+1th first data line among the sensing units in the kth column. The result of the unit mutual capacity measurement.

According to the touch device and its sensing method disclosed in the present invention, the touch device can switch between the self-capacity mode and the mutual-capacity mode, so that the touch device can increase the sensing area and the amount of data to be sensed, so as to solve the problem of existing problems. In technology, the problem of reduced sensing ability. Furthermore, when the mutual capacity mode is executed, the touch device will time-divisionally transmit data signals from part of the first data lines, and then transmit data signals from another part of the first data lines, so that the control unit receives The sensing data will not be misjudged, and the gap area between the sensing units can also be sensed, so that the sensing capability and resolution of the touch device are further improved.

The above descriptions about the present disclosure and the following descriptions of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide further explanations of the protection scope of the claims of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to an embodiment of the present invention.

FIG. 2 is a voltage timing diagram of an operation stage of a touch device operating in a mutual capacitance mode according to an embodiment of the present invention.

FIG. 3 is a voltage timing diagram of another operation stage of a touch device operating in a mutual capacitance mode according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention.

FIG. 5 is a voltage timing diagram of an operation stage of a touch device operating in a mutual capacitance mode according to another embodiment of the present invention.

FIG. 6 is a voltage timing diagram of an operation stage of a touch device operating in a mutual capacitance mode according to another embodiment of the present invention.

FIG. 7 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to yet another embodiment of the present invention.

FIG. 9 is a voltage timing diagram of an operation stage of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

FIG. 10 is a voltage timing diagram of another operation stage of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

FIG. 11 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to yet another embodiment of the present invention.

FIG. 12 is a voltage timing diagram of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

FIG. 13 is a voltage timing diagram of another operation stage of a touch device operating in a mutual capacitance mode according to yet another embodiment of the present invention.

FIG. 14 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention.

FIG. 15 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to yet another embodiment of the present invention.

FIG. 16 is a flowchart of steps of a sensing method for a touch device according to an embodiment of the present invention.

Among them, reference signs:

10, 20, 10’, 20’ touch device

11, 21, 11’, 21’ sensing electrode layer

111, 211, 111’, 211’ sensing unit

112, 212, 112’, 212’ scan lines

113, 213, 113’, 213’ data cable

114, 214, 114’, 214’ control unit

115, 215, 115’, 215’ induction array

G(1)～G(m), G(k-1), G(k), G(k+1), G(k+2) scan signal

T(i), T(i+1), T(i+2), T(i+3), R(j), R(j+1), R(j+2) data signal

D(1)～D(n), T(1)～T(4), R(1)～R(4) data signal

[i], [i+1] first data line

[j], [j+1], [j+2] second data line

Z1～Z4, Y1～Y6, Y1’～Y6’, W1, W2 sensing area

Prd1～Prd6, Prd1’～Prd4’ time interval

detailed description

The detailed features and advantages of the present invention are described in detail below in the implementation manner, and its content is enough to make any person familiar with the relevant art understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the patent scope of the application and the drawings , anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the concept of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIG. 1 , which is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to an embodiment of the present invention. As shown in FIG. 1 , the touch device 10 includes a sensing electrode layer 11 . The sensing electrode layer 11 has a plurality of sensing units 111 , M scanning lines 112 , N data lines 113 and a control unit 114 . A plurality of sensing units 111 are arranged into a sensing array 115 with M columns and N rows. The sensing units 111 of each column in the sensing array 115 are electrically connected to one of the M scanning lines 112 . The sensing units 111 of each row in the sensing array 115 are electrically connected to one of the N data lines 113 .

In one embodiment, the control unit 114 has a driving circuit and a data circuit. The M scan lines 112 are electrically connected to the driving circuit, and the N data lines 113 are electrically connected to the data circuit. The M scanning lines 112 respectively transmit the scanning signals G(1)-G(m) provided by the drive circuit to the M columns of sensing units 111 of the sensing array 115, and the N data lines 113 respectively transmit the data signals provided by the data circuit to the sensing units. N rows of sensing units 111 in the array 115 . In one embodiment, the sensing unit 111 has, for example, an active element and a conductor, and the active element is, for example, an N-type transistor. When the kth scanning line 112 outputs the scanning signal G(k), that is, when the voltage level on the kth scanning line 112 rises, the active element in the sensing unit 111 on the kth column is driven, and the kth column The active element in the sensing unit 111 is turned on, and the data signals on the N data lines 113 are respectively written into the conductors on the kth column. The data signal T(i) on line 113 is written into the conductor.

When a finger touches the sensing array 115 of the touch device 10, the touch device 10 will perform self-capacitance sensing and mutual-capacity sensing for the finger, that is, the control unit 114 will switch between the mutual-capacity mode and the mutual-capacity mode. Self-capacitance mode for finger sensing. The sensing method of the touch device 10 operating in the mutual capacity mode will be described below. Please refer to FIGS. 1 to 3 together. FIG. 2 shows a touch device operating in the mutual capacity mode according to an embodiment of the present invention. FIG. 3 is a voltage timing diagram of another operation stage of a touch device operating in a mutual capacitance mode according to an embodiment of the present invention. As shown in the figure, part of the data lines 113 among the N data lines 113 is defined as the first data line, and another part of the data lines 113 is defined as the second data line, and the first data line and the second data line are respectively regarded as As the transmit data line (TX) and receive data line (RX). This embodiment does not limit the first data line to be used as the transmission data line or the second data line to be used as the transmission data line.

For the convenience of description, [i] and [j] are used to represent the first data line and the second data line respectively in the accompanying drawings, that is, [i] represents the i-th first data line, and [i+1] represents the first data line. i+1 first data line, [j] represents the jth second data line, [j] represents the j+1th second data line, wherein the i-th first data line is located in the j-th second data line line and the j+1 th second data line, the j+1 th second data line is located between the i th first data line and the i+1 th first data line.

In the mutual capacitance mode, the control unit 114 outputs the data signal T(i) from the ith first data line, as shown in FIG. 2 . Next, the control unit 114 sequentially outputs scan signals G( 1 )˜G(m) from the M scan lines 112 . Taking the k-th scan line 112 among the M scan-lines 112 as an example, when the k-th scan line 112 outputs a scan signal G(k), the control unit 114 receives the first sense signal on each second data line. Data, such as the first sensing data on the j-th second data line, the j+1-th second data line, and the j+2-th second data line, wherein when the k-th scan line 112 outputs the scan signal G( k), the first sensing data on the jth second data line is the sensing unit 111 on the kth column, the sensing unit electrically connected to the jth second data line is electrically connected to the ith sensing unit The result of the mutual capacitance measurement of the sensing unit of the first data line, that is, the result of the mutual capacitance measurement of the sensing region Z1 in FIG. 1 . The first sensing data on the j+1th second data line is the sensing unit 111 on the kth column, the sensing unit electrically connected to the j+1th second data line is electrically connected to the ith row The result of the mutual capacitance measurement of the sensing units of the first data line, that is, the result of the mutual capacitance measurement of the sensing region Z2 in FIG. 1 .

Next, the control unit 114 outputs the data signal T(i+1) from the i+1th first data line, as shown in FIG. 3 . The control unit 114 sequentially outputs scan signals G( 1 )˜G(m) from the M scan lines 112 . Similarly, taking the kth scanning line 112 among the M scanning lines 112 as an example, when the kth scanning line 112 outputs the scanning signal G(k), the control unit 114 receives the signal on each second data line The first sensing data, wherein when the kth scanning line 112 outputs the scanning signal G(k), the first sensing data on the j+1th second data line is the electrical property of the sensing unit 111 on the kth column The result of the mutual capacity measurement between the sensing unit connected to the j+1 second data line and the sensing unit electrically connected to the i first data line, that is, the result of the mutual capacity measurement of the sensing area Z3 in FIG. 1 . The first sensing data on the j+2th second data line is that among the sensing units 111 on the kth column, the sensing unit electrically connected to the j+2th second data line is electrically connected to the i-th sensing unit The result of the mutual capacitance measurement of the sensing units of the first data line, that is, the result of the mutual capacitance measurement of the sensing region Z4 in FIG. 1 . The sensing areas Z1 - Z4 in FIG. 1 are only for convenience of description and schematic display and do not refer to the actual sensing area of the touch device 10 .

Specifically, please refer to FIG. 4 to FIG. 6, FIG. 4 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 5 is a schematic diagram according to another embodiment of the present invention. The illustrated voltage timing diagram of a touch device operating in a mutual capacitance mode. FIG. 6 is a voltage diagram of a touch device operating in a mutual capacitance mode according to another embodiment of the present invention. Timing diagram, as shown in the figure, when the sensing electrode layer 11 of the touch device 10 has 8 scanning lines 112, 5 data lines 113 and a sensing array 115 with a plurality of sensing units 111 arranged in 8 columns and 5 rows, the control The unit 114 first outputs the data signal T( 1 ) from the second data line 113 , and then the control unit 114 sequentially outputs the scan signals G( 1 )˜G( 8 ) from the eight scan lines 112 .

In the time interval Prd1' in FIG. 5, when the first scan line 112 outputs the scan signal G(1), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives the first data The first sensing data on the line 113 , the third data line 113 and the fifth data line 113 . At this time, the first sensing data on the first data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the first row and the first column and the sensing unit 111 in the second row and the first column. The first sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the first column and the sensing unit 111 in the second row and the first column. The first sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fourth row and the first column and the sensing unit 111 in the fifth row and the first column.

In the time interval Prd2', when the second scan line 112 outputs the scan signal G(2), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the first data line 113, the second The first sensing data on the three data lines 113 and the fifth data line 113 . At this time, the first sensing data on the first data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the first row and the second column and the sensing unit 111 in the second row and the second column. The first sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the second column and the sensing unit 111 in the second row and the second column. The first sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the fourth row and the second column and the sensing unit 111 in the fifth row and the second column.

When the third scanning line 112 to the eighth scanning line 112 output the scanning signals G(3)-G(8), similarly, the control unit 114 receives the first data line 113, the third data line 113 and The results of the mutual capacity measurement of the sensing unit 111 on the fifth data line 113 will not be repeated here.

Next, the control unit 114 outputs the data signal T( 2 ) from the fourth data line 113 , and the control unit 114 sequentially outputs scan signals G( 1 )˜G( 8 ) from the eight scan lines 112 . In the time interval Prd3' in FIG. 6, when the first scan line 112 outputs the scan signal G(1), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives the third data Line 113 and the second sensing data on the fifth data line 113 . The second sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the first column and the sensing unit 111 in the fourth row and the first column. The second sensing data on the fifth data line 113 is the result of mutual capacity measurement between the sensing unit 111 in the fifth row and the first column and the sensing unit 111 in the fourth row and the first column.

In the fourth time interval Prd4', when the second scan line 112 outputs the scan signal G(2), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the third data line 113 and the second sensing data on the fifth data line 113 . The second sensing data on the third data line 113 is the result of mutual capacitance measurement between the sensing unit 111 in the third row and the second column and the sensing unit 111 in the fourth row and the second column. The second sensing data on the fifth data line 113 is the result of mutual capacitance measurement between the sensing unit 111 at the fifth row and the second column and the sensing unit 111 at the fourth row and the second column.

When the third scanning line 112 to the eighth scanning line 112 output the scanning signals G(3)-G(8), similarly, the control unit 114 receives the first data line 113, the third data line 113 and The results of the mutual capacity measurement of the sensing unit 111 on the fifth data line 113 will not be repeated here.

In practice, the result of the mutual capacitance measurement refers to the result that the control unit 114 measures the change of the mutual capacitance between the two sensing units 111 caused by the finger when the finger touches the sensing unit 11 . Specifically, taking two sensing units 111 as an example, one sensing unit 111 is provided with a data signal, and the other sensing unit 111 senses the radiation energy generated by the sensing unit 111 provided with the data signal. When the finger is not touching the sensing unit 111 , there is a mutual capacitance between the two sensing units 111 . When a finger touches the sensing unit 111 , capacitance is generated between the finger and the two sensing units 111 . The capacitance on the finger and the capacitance between the finger and the two sensing units 111 will change the mutual capacitance between the two sensing units 111 . The control unit 114 can determine the finger touch according to the changed mutual capacitance between the two sensing units 111 or the change amount of the mutual capacitance between the two sensing units 111 .

Next, the sensing method of the touch device 10 operating in the self-capacitance mode will be described. Please refer to FIG. 1 again. As shown in FIG. 1 , in the self-capacitance mode, the control unit 114 outputs the data signal D from the N data lines 113 (1)˜D(n), and scan signals G(1)˜G(m) are sequentially output from the M scan lines 112 . Taking the k-th scan line 112 among the M scan-lines 112 as an example, when the k-th scan line 112 outputs the scan signal G(k), the control unit 114 receives the third sensing data of each data line 113 . That is to say, in the self-capacitance mode, each first data line and each second data line will output a data signal, so that the control unit 114 receives each first data line and each second data line The third sensing data. In practice, since each data line 113 outputs a data signal in the self-capacitance mode, the data line 113 is not actually defined as the first data line and the second data line. Here, the first data line and the second data line The two data lines are only used for illustration of the mutual capacity mode, and are not intended to limit this embodiment.

When the k-th scanning line 112 outputs the scanning signal G(k), the third sensing data on the i-th first data line is in the sensing unit 111 on the k-th column, and is electrically connected to the i-th first data line The result of the self-capacitance measurement of the sensing unit 111 of the line, that is, the result of the self-capacitance measurement of the sensing unit 111 of the i-th row and the k-th column. The third sensing data on the jth second data line is the result of the self-capacitance measurement of the sensing unit 111 electrically connected to the jth second data line in the sensing unit 111 on the kth column, that is, the jth row The sensing unit 111 in the kth column is the result of self-capacitance measurement.

Also taking the actual example of FIG. 4, please refer to FIG. 4 and FIG. 7 together. FIG. 7 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to another embodiment of the present invention, as shown in FIG. As shown, when the sensing electrode layer 11 of the touch device 10 has 8 scanning lines 112, 5 data lines 113, and a sensing array 115 with a plurality of sensing units 111 arranged in 8 columns and 5 rows, the control unit 114 first starts from each One data line 113 respectively outputs data signals D( 1 )˜D( 5 ), and then the control unit 114 sequentially outputs scan signals G( 1 )˜G( 8 ) from the eight scan lines 112 .

In the time interval Prd5 in FIG. 7 , when the first scan line 112 outputs the scan signal G(1), that is, when the voltage level of the first scan line 112 rises, the control unit 114 receives five data lines 113 on the third sensing data. The third sensing data on the first data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the first row and the first column. The third sensing data on the second data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the second row and the first column. The third sensing data on the third data line 113 is the result of the self-capacity measurement of the sensing unit 111 in the third row and the first column, and the third sensing data on the remaining fourth data line 113 to the fifth data line 113 are based on And so on.

In the time interval Prd6, when the second scan line 112 outputs the scan signal G(2), that is, when the voltage level of the second scan line 112 rises, the control unit 114 receives the third signal on the five data lines 113 Sensing data. The third sensing data on the first data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the first row and the second column. The third sensing data on the second data line 113 is the result of the self-capacitance measurement of the sensing unit 111 in the second row and the second column. The third sensing data on the third data line 113 is the result of the self-capacity measurement of the sensing unit 111 in the third row and the second column, and the third sensing data on the remaining fourth data line 113 to the fifth data line 113 are based on And so on.

When the third scanning line 112 to the eighth scanning line 112 output the scanning signals G(3)-G(8), similarly, the control unit 114 receives the result of the self-capacitance measurement of each data line 113, and no further repeat.

In practice, the result of the self-capacitance measurement refers to the result that the control unit 114 measures the self-capacitance change between the sensing unit 111 and the ground terminal caused by the finger when the finger touches the sensing unit 11 . Specifically, when the finger is not touching the sensing unit 111 , there is a self-capacitance between the sensing unit 111 and the ground terminal. When a finger touches the sensing unit 111 , capacitance is generated between the finger and the sensing unit 111 . The capacitance on the finger and the capacitance between the finger and the sensing unit 111 will change the self-capacitance between the sensing unit 111 and the ground. The control unit 114 can determine the touch of the finger according to the changed self-capacitance or the change amount of the self-capacitance between the sensing unit 111 and the ground terminal.

Furthermore, when the touch device 10 is used for fingerprint recognition, the uneven texture of the fingerprint makes the contact area between the finger and the sensing unit 111 different, thereby affecting the mutual capacitance between the two sensing units 111 in the mutual capacity mode. The capacitance, and the self-capacitance capacitance between the sensing unit 111 and the ground terminal in the self-capacitance mode. In other words, when a finger touches the touch device 10 to allow the touch device 10 to identify the fingerprint of the finger, the touch device 10 will perform mutual-capacitance and self-capacity sensing respectively. In the self-capacitance mode, the touch device 10 will recognize the self-capacitance measurement result of the finger area corresponding to each sensing unit 111 . In the mutual capacity mode, the touch device 10 will recognize the mutual capacity measurement results of the corresponding finger areas between the two sensing units 111 . The touch device 10 achieves the effect of identifying fingerprints according to the self-capacity measurement results and mutual capacity measurement results.

In this embodiment, when the sensing array 115 of the touch device 10 is a matrix of M columns and N rows, the touch device 10 obtains the mutual capacitance sensing data of (2M-1)×N pens and the self-capacitance of M×N pens The response data is used to improve the sensing resolution of the touch device 10 .

Please refer to FIG. 8 to FIG. 10 together. FIG. 8 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 9 is a schematic diagram according to another embodiment of the present invention. 10 is a voltage timing diagram of another operating stage of the touch device operating in the mutual capacitance mode according to yet another embodiment of the present invention. As shown in the figure, the touch device 20 includes a sensing electrode layer 21 . The sensing electrode layer 21 has a plurality of sensing units 211 , M scanning lines 212 , N data lines 213 and a control unit 214 . A plurality of sensing units 211 are arranged into a sensing array 215 with M columns and N rows. The sensing units 211 of each column in the sensing array 215 are electrically connected to one of the M scanning lines 212 . The sensing units 211 of each row in the sensing array 215 are electrically connected to one of the N data lines 213 .

The touch device 20 of this embodiment is substantially the same as the previous embodiment, and the difference from the previous embodiment is that the control unit 214 sequentially outputs the scanning signals G(1)-G(m) from the M scanning lines 212 , and the control unit 214 will overlap the times when outputting scan signals from two adjacent scan lines of the M scan lines 212 . In other words, when the control unit 214 outputs the scan signal G(k) from the k scan line 212 for half of the expected time, the control unit 214 outputs the scan signal G(k+1) from the k+1 scan line 212 . When the control unit 214 outputs the scan signal G(k+1) from the k+1 scan line 212 for half of the expected time, the control unit 214 stops outputting the scan signal G(k) from the k scan line 212, and the control unit 214 outputs the scanning signal G(k+2) from the k+2th scanning line 212 .

Specifically, in the mutual capacitance mode, when the control unit 214 outputs the data signal T(i) from the i-th first data line, the control unit 214 sequentially outputs the scan signals G(1)˜ G(m), and receive the first sensing data on each second data line, such as the j second data line, the j+1 second data line and the j+2 second data line The first sensing data, wherein when the k-1th scanning line 212 outputs the scanning signal G(k-1), and when the k-th scanning line 212 outputs the scanning signal G(k), the jth second data line The first sensing data is the sensing unit electrically connected to the j-th second data line and the sensing unit electrically connected to the i-th first data line in the k-1th column and the sensing unit 211 on the k-th column The result of the mutual capacitance measurement, that is, the mutual capacitance measurement result of the sensing region Y1 in FIG. 8 . The first sensing data on the j+1th second data line is the sensing unit 211 on the k-1th column and the kth column, and the sensing unit electrically connected to the jth second data line is electrically connected to The result of the mutual capacity measurement of the sensing unit on the ith first data line is the result of the mutual capacity measurement of the sensing region Y1 ′ in FIG. 8 .

At this time, similarly, the control unit 214 will also output the data signal T(i+2) from the i+2th first data line, and the first sensing data on the j+2th second data line is the kth - Among the sensing units 211 on the 1st column and the kth column, the sensing unit electrically connected to the j+2th second data line and the sensing unit electrically connected to the i+2th first data line measure the mutual capacity the result of.

More specifically, the first sensing data on the jth second data line is electrically connected to the sensing unit 211 of the jth second data line, and is located between the sensing unit 211 of the k-1th column and the kth column. Among the sensing units electrically connected to the i-th first data line, the sensing units 211 located in the k-1th column and the k-th column are the results of mutual capacity measurement. The first sensing data on the j+1th second data line is electrically connected to the sensing unit 211 of the j+1th second data line, and the sensing unit 211 located in the k-1th column and the kth column is connected to the electrical Among the sensing units that are connected to the i-th first data line, the mutual capacitance measurement results of the sensing units 211 located in the k-1th column and the k-th column.

Next, when the kth scan line 212 outputs the scan signal G(k), and the k+1th scan line 212 outputs the scan signal G(k+1), the first sensor on the jth second data line The data is the mutual capacity measurement of the sensing unit electrically connected to the j second data line and the sensing unit electrically connected to the i first data line among the sensing units 211 on the kth column and the k+1th column. The result of , that is, the mutual capacity measurement result of the sensing region Y3 in FIG. 8 . The first sensing data on the j+1th second data line is the sensing unit 211 on the kth column and the k+1th column, which is electrically connected to the sensing unit and the electric circuit of the j+1th second data line. The mutual capacitance measurement result of the sensing unit connected to the i-th first data line, that is, the mutual capacitance measurement result of the sensing area Y3' in FIG. 8 . Similarly, when the k+1 scan line 212 outputs the scan signal G(k+1), and the k+2 scan line 212 outputs the scan signal G(k+2), the control unit 214 receives the The mutual capacity measurement results of the sensing region Y5 and the sensing region Y5 ′ will not be repeated here.

In the next operation stage, the control unit 214 outputs the data signal T(i+1) from the (i+1)th first data line. The control unit 214 sequentially outputs scanning signals G(1)-G(m) from the M scanning lines 212, and receives the second sensing data on each second data line, such as the jth second data line, the The second sensing data on the j+1 second data line and the j+2th second data line, wherein when the k-1th scanning line 212 outputs the scanning signal G(k-1), and the k-th scanning line When the line 212 outputs the scanning signal G(k), the second sensing data on the j+1th second data line is in the k-1th column and the sensing unit 211 on the kth column, and is electrically connected to the j+th column The result of the mutual capacitance measurement between the sensing unit of one second data line and the sensing unit electrically connected to the i+1th first data line is the mutual capacitance measurement result of the sensing area Y2 in FIG. 8 . The second sensing data on the j+2th second data line is the sensing unit 211 on the k-1th column and the kth column, which is electrically connected to the sensing unit and the electric circuit of the j+2th second data line. The mutual capacitance measurement result of the sensing unit connected to the i+1th first data line, that is, the mutual capacitance measurement result of the sensing area Y2' in FIG. 8 .

At this time, similarly, the control unit 214 will also output the data signal T(i+3) from the i+3th first data line, and the second sensing data on the j+3th second data line is the kth - Among the sensing units 211 on the 1st column and the kth column, the sensing unit electrically connected to the j+3th second data line and the sensing unit electrically connected to the i+3th first data line measure the mutual capacity the result of.

Next, when the kth scanning line 212 outputs the scanning signal G(k), and the k+1th scanning line 212 outputs the scanning signal G(k+1), the second data line on the j+1th second data line The second sensing data is that among the sensing units 211 on the kth column and the k+1th column, the sensing unit electrically connected to the j+1th second data line is electrically connected to the i+1th first data line The result of the mutual capacitance measurement of the sensing unit, that is, the mutual capacitance measurement result of the sensing area Y4 in FIG. 8 . The second sensing data on the j+2th second data line is the sensing unit 211 on the kth column and the k+1th column, which is electrically connected to the sensing unit and the electric circuit of the j+2th second data line. The mutual capacitance measurement result of the sensing unit connected to the i+1th first data line, that is, the mutual capacitance measurement result of the sensing area Y4' in FIG. 8 . Similarly, when the k+1 scan line 212 outputs the scan signal G(k+1), and the k+2 scan line 212 outputs the scan signal G(k+2), the control unit 214 receives the The mutual capacity measurement results of the sensing region Y6 and the sensing region Y6 ′ will not be repeated here. The sensing areas Y1-Y6 and Y1'-Y6' in FIG. 8 are only for convenience of description and display in the drawing and do not refer to the actual sensing areas of the touch device 20. As shown in FIG.

For a practical example, please refer to FIG. 11 to FIG. 13 , FIG. 11 is a schematic diagram of a sensing electrode layer and a control unit of a touch device according to another embodiment of the present invention, and FIG. 12 is a schematic diagram according to another embodiment of the present invention. The voltage timing diagram of the touch device operating in the mutual capacitance mode shown in the embodiment, FIG. 13 is the voltage timing diagram of another operating stage of the touch device operating in the mutual capacitance mode according to another embodiment of the present invention picture. When the sensing electrode layer 21 of the touch device 20 has 3 scanning lines 212, 8 data lines 213 and a sensing array 215 with a plurality of sensing units 211 arranged in 3 columns and 8 rows, the control unit 214 first starts from the second data The line 213 outputs the data signal T(1) and the sixth data line 213 outputs the data signal T(3), and then the control unit 214 sequentially outputs the scanning signals G(1)-G(3) from the three scanning lines 212 .

In the time interval Prd1' in FIG. 12, when the first scan line 212 outputs the scan signal G(1), and the second scan line 212 outputs the scan signal G(2), that is, the first scan line 212 When the voltage level of the second scan line 212 rises, the control unit 214 receives the first sensing data on the first, third, fifth and seventh data lines 213 . At this time, the first sensing data on the first data line 213 is the mutual capacitance between the sensing units 211 in the first row, the first column and the second row, the first column, and the first row, the second column and the second row. The sum of the mutual capacitances between the sensing units 211 in the second column of the row. The first sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the 3rd row, 1st column and the 2nd row, 1st column, and the 3rd row, 2nd column and the 2nd row, 2nd The sum of the mutual capacitances between the sensing units 211 of the column. The first sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 1st column and the 6th row, 1st column, and the 5th row, 2nd column and the 6th row, 2nd The sum of the mutual capacitances between the sensing units 211 of the column. The first sensing data on the seventh data line 213 is the mutual capacitance between the sensing unit 211 in the 7th row, 1st column and the 6th row, 1st column, and the 7th row, 2nd column and the 6th row, 2nd column. The sum of the mutual capacitances between the sensing units 211 of the column.

In the time interval Prd2', when the second scanning line 212 outputs the scanning signal G(2), and the third scanning line 212 outputs the scanning signal G(3), that is, the second scanning line 212 and the third scanning line When the voltage level of the scan line 212 rises, the control unit 214 receives the first sensing data on the first, third, fifth and seventh data lines 213 . At this time, the first sensing data on the first data line 213 is the mutual capacitance between the sensing units 211 in the first row, the second column and the second row, the second column, and the first row, the third column and the second row. The sum of the mutual capacitances between the sensing units 211 in the third column of the row. The first sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the third row, the second column and the second row, the second column, and the third row, the third column and the second row, the third row. The sum of the mutual capacitances between the sensing units 211 of the column. The first sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 2nd column and the 6th row, 2nd column, and the 5th row, 3rd column and the 6th row, 3rd column. The sum of the mutual capacitances between the sensing units 211 of the column. The first sensing data on the seventh data line 213 is the mutual capacitance between the sensing unit 211 in the 7th row, 2nd column and the 6th row, 2nd column, and the 7th row, 3rd column and the 6th row, 3rd The sum of the mutual capacitances between the sensing units 211 of the column.

Next, the control unit 214 outputs the data signal T(2) from the fourth data line 213, and outputs the data signal T(4) from the eighth data line 213, and the control unit 214 sequentially outputs the scan lines from the three scan lines 212. Signals G(1)-G(3). In the time interval Prd3' in FIG. 13, when the first scanning line 212 outputs the scanning signal G(1), and the second scanning line 212 outputs the scanning signal G(2), that is, the first scanning line 212 When the voltage level of the second scan line 212 rises, the control unit 214 receives the second sensing data on the first, third, fifth and seventh data lines 213 . At this time, the second sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the third row, the first column and the fourth row, the first column, and the third row, the second column and the fourth row. The sum of the mutual capacitances between the sensing units 211 in the second column of the row. The second sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 1st column and the 4th row, 1st column, and the 5th row, 2nd column and the 4th row, 2nd The sum of the mutual capacitances between the sensing units 211 of the column. The second sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row, 1st column and the 8th row, 1st column, and the 7th row, 2nd column and the 8th row, 2nd column. The sum of the mutual capacitances between the sensing units 211 of the column.

In the time interval Prd4', when the second scanning line 212 outputs the scanning signal G(2), and the third scanning line 212 outputs the scanning signal G(3), that is, the second scanning line 212 and the third scanning line When the voltage level of the scan line 212 rises, the control unit 214 receives the second sensing data on the third, fifth and seventh data lines 213 . At this time, the second sensing data on the third data line 213 is the mutual capacitance between the sensing units 211 in the third row, the second column and the fourth row, the second column, and the third row, the third column and the fourth row The sum of the mutual capacitances between the sensing units 211 in the third column of the row. The second sensing data on the fifth data line 213 is the mutual capacitance between the sensing units 211 in the 5th row, 2nd column and the 4th row, 2nd column, and the 5th row, 3rd column and the 4th row, 3rd column. The sum of the mutual capacitances between the sensing units 211 of the column. The second sensing data on the seventh data line 213 is the mutual capacitance between the sensing units 211 in the 7th row, 2nd column and the 8th row, 2nd column, and the 7th row, 3rd column and the 8th row, 3rd column. The sum of the mutual capacitances between the sensing units 211 of the column.

In other words, in the above specific embodiment, the j-th second data line is electrically connected to the sensing unit 211 on the 2n-1th row in the sensing array 215, and the i-th first data line is electrically connected to the 2n-th row in the sensing array 215. The sensing unit 211 on the row, the j+1th second data line is electrically connected to the sensing unit 211 on the 2n+1th row in the sensing array 215, and the i+1th first data line is electrically connected to the sensing array 215 When the sensing unit 211 on the 2n+2th row, that is, the jth second data line, the ith first data line, the j+1th second data line and the i+1th first data line are set sequentially. When the kth scanning line outputs the scanning signal G(k) and the k+1th scanning line outputs the scanning signal G(k+1), the sensing unit 211 in the kth column and the 2nth row is connected to the kth column and the 2n+ The mutual capacitance between the sensing units 211 of 1 row, and the sum of the mutual capacitance between the sensing unit 211 of the k+1th row 2n and the sensing unit 211 of the k+1th row 2n+1 row, as The first sensing data on the j+1th second data line. Similarly, the mutual capacitance between the sensing unit 211 of the k-th column and the 2n+1 row and the k-th column and the 2n+2 row of the sensing unit 211, and the k+1th column and the 2n+1 row of the sensing unit The sum of the mutual capacitance between 211 and the sensing unit 211 in the k+1th column and the 2n+2th row is used as the second sensing data on the j+1th second data line.

Next, the sensing method of the touch device 20 operating in the self-capacitance mode will be described. Please refer to FIG. 14 to FIG. 15 together. and a schematic diagram of the control unit, FIG. 15 is a voltage timing diagram of a touch device operating in a self-capacitance mode according to yet another embodiment of the present invention. Directly taking the aforementioned practical example of having 3 scanning lines 212, 8 data lines 213 and a sensing array 215 with 3 columns and 8 rows, as shown in the figure, in the self-capacitance mode, the control unit 214 starts from the 8 data lines 213 outputs data signals D( 1 )˜D( 8 ), and sequentially outputs scan signals G( 1 )˜G( 3 ) from the three scan lines 212 . In the time interval Prd5 in FIG. 15 , when the first scan line 212 outputs the scan signal G(1), and the second scan line 212 outputs the scan signal G(2), the first data line 213 on the first The three sensing data are the sum of the self-capacitance of the sensing unit 211 in the first row and the first column and the self-capacitance of the sensing unit 211 in the first row and the second column. The third sensing data on the second data line 213 is the sum of the self-capacitance of the sensing unit 211 in the second row and the first column and the self-capacitance of the sensing unit 211 in the second row and the second column. The third sensing data on the other data lines 213 can be deduced by analogy, and each piece of third sensing data is the sum of the self-capacitance in each sensing region W1 as shown in FIG. 14 .

In the time interval Prd6, when the second scanning line 212 outputs the scanning signal G(2), and when the third scanning line 212 outputs the scanning signal G(3), the control unit 214 receives the eight data lines 213 on the first Three sensing data. At this time, the third sensing data on the first data line 213 is the sum of the self-capacitance of the sensing unit 211 in the first row, second column and the self-capacitance of the sensing unit 211 in the first row, third column. The third sensing data on the second data line 213 is the sum of the self-capacitance of the sensing unit 211 in the second row, the second column, and the self-capacitance of the sensing unit 211 in the second row, third column, and the third sensing data on the remaining data lines 213 Sensing data and so on. At this time, each piece of third sensing data is the sum of the self-capacitance in each sensing region W2 as shown in FIG. 14 .

Similarly, when the touch device 20 is used for fingerprint identification, the uneven lines of the fingerprint make the contact area between the finger and the sensing unit 211 different, so that the touch device 20 can obtain each of the sensing array 251 in the mutual capacity mode. The sum of the mutual capacitances of the four sensing units 211, and the sum of the self-capacitances of every two sensing units 211 in the sensing array 215 in the self-capacitance mode are used to obtain the sensing data caused by fingerprints in each area of the finger, and then achieve identification The effect of finger prints. In this embodiment, when the sensing array 215 of the touch device 20 is a matrix of M columns and N rows, the touch device 20 obtains the mutual capacitance sensing data of (2M-1)×(N-1) pens and M×( N-1) The self-capacitance of the pen responds to the data, and the finger area corresponding to the gap between the sensing units 211 can also be sensed to calculate the capacitance, so that the sensing resolution of the touch device 20 is further improved.

In one embodiment, the length of the conductors in each sensing unit 211 in the extending direction of the scan lines 212 is 1.5 to 3 times the length of the conductors in the extending direction of the data lines 213 . In other words, when the length of the electrical conductor in the direction in which the scanning line 212 extends is twice the length of the electrical body in the direction in which the data line 213 extends, in the self-capacitance mode, when the control unit 214 outputs from the second scanning line 212 When the scanning signal G(2) is scanned and the scanning signal G(3) is output from the third scanning line 212, the length of each sensing area W1 in the direction in which the scanning line 212 extends is approximately equal to the length of the conductor in the direction in which the data line 213 extends length.

In one embodiment, the control unit outputs the scan signal according to the clock signal and the start signal generated by the clock controller. The clock signal and the start signal generated by the clock generation signal can be used to adjust the time of the control unit to generate the scan signal, the number of stages of the output scan signal, or other feasible adjustments, which are not limited in this embodiment.

In the drawings of the present invention, the shape of the sensing unit is only for convenience of display, and the present invention does not limit the shape, quantity and shape of the sensing unit. In addition, the foregoing description shows that when the control unit 214 outputs the scanning signal G(k) from the kth scanning line 212 for half of the expected time, the control unit 214 will output the scanning signal G(k+ The embodiment of 1) is only for the convenience of description and convenient display of the drawings, and does not limit the scanning signal G(k+1) to be output when the output scanning signal G(k) reaches half of the expected time.

In order to illustrate the sensing method of the touch device in this embodiment more clearly, please refer to FIG. 1 and FIG. 16 together. FIG. 16 is a flow chart of the steps of the sensing method of the touch device according to an embodiment of the present invention. As shown in the figure, in step S301, in the mutual capacity mode, the data signal T(i) is output from the i-th first data line [i], and in step S303, the data signal T(i) is sequentially output from the M scanning lines 112 At least one output scan signal. In step S305, when the kth scan line 112 of the M scan lines 112 outputs the scan signal G(k), the first sensing data on each second data line is received. In step S307, the i+1th first data line [i+1] is switched to output the data signal T(i+1). In step S309, when the kth scan line 112 of the M scan lines 112 outputs the scan signal G(k), the second sensing data on each second data line is received. The sensing methods described in the present invention have actually been disclosed in the above-mentioned embodiments, and this embodiment will not be repeated here.

Based on the above, the embodiments of the present invention provide a touch device and a sensing method thereof. The touch device operates in a self-capacitance mode and a mutual-capacitance mode by switching the control unit, so that the area of touch sensing and the amount of data are increased. , and in mutual capacity mode, the touch device transmits data signals from part of the first data line in time division, and then transmits data signals from another part of the first data line, so that the sensing data on the second data line It will not be the result of mutual capacity measurement with the first data lines on both sides at the same time, so the control unit will not misjudge the sensing area corresponding to the sensing data. In addition, by means of the mutual capacitance measurement in the mutual capacitance mode, the gap area between the sensing units can also be sensed as sensing data, thereby further improving the sensing capability and resolution of the touch device.

Although the present invention is disclosed above with the foregoing embodiments, they are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, all changes and modifications made belong to the scope of patent protection of the present invention. For the scope of protection defined by the present invention, please refer to the appended claims.

Claims (11)

1. A sensing method for a touch device, applicable to a sensing electrode layer, the sensing electrode layer has a plurality of sensing units, M scanning lines and N data lines, and the sensing units are arranged in M columns and N rows A sensing array, wherein the sensing units in each column are electrically connected to one of the M scanning lines, and the sensing units in each row are electrically connected to one of the N data lines, and the data lines define It is a plurality of first data lines and a plurality of second data lines, and the i-th first data line among the first data lines is located in the j-th and j+1-th second data lines among the second data lines Between the data lines, and the j+1th second data line is located between the i-th and i+1th first data lines, the sensing method includes a mutual capacitance mode and a self-capacitance mode, wherein in the Compatible mode includes: Outputting a data signal from the ith first data line; Sequentially output a scan signal from at least one of the M scan lines; When the kth scan line of the M scan lines outputs the scan signal, it receives a first sensing data on each of the second data lines, wherein the first sensing data on the j+1th second data line The data is the result of mutual capacitance measurement between the sensing unit electrically connected to the j+1 second data line and the sensing unit electrically connected to the i first data line among the sensing units in the kth column , and each sensing unit in the kth column is electrically connected to the kth scan line; switching to output the data signal from the i+1th first data line; and When the kth scan line of the M scan lines outputs the scan signal, it receives a second sensing data on each of the second data lines, wherein the second sensing data on the j+1th second data line Among the sensing units whose data is the kth column, the sensing unit electrically connected to the j+1 second data line and the sensing unit electrically connected to the i+1 first data line are measured for mutual capacitance. the result of. 2. The sensing method of a touch device according to claim 1, wherein in the step of sequentially outputting the scan signal from at least one of the M scan lines, further comprising: Any two adjacent scan lines output the scan signal. When the kth scan line and the k+1th scan line of the M scan lines output the scan signal, the j+1th second data line on the second data line A sensing data is associated with the sensing units of the kth column and the k+1th column, the sensing units electrically connected to the j+1th second data line are electrically connected to the ith first data line The results of the mutual capacity measurement of these induction units of the line. 3. The sensing method of a touch device according to claim 2, wherein in the self-capacitance mode, the scan signal is output from any two adjacent scan lines in the M scan lines, when the When the kth and k+1th scanning lines among the M scanning lines output the scanning signal, receiving a third sensing data on each of the first data lines and receiving a first sensing data on each of the second data lines Three sensing data, wherein the third sensing data on the i-th first data line is associated with the sensing units electrically connected to the i-th first data line, and electrically connected to the sensing unit on the k-th scanning line The unit and the sensing unit electrically connected to the k+1th scanning line are self-capacitance measurement results, and the third sensing data on the j+1th second data line is associated with the j+1th second data line Among the sensing units that are electrically connected, the sensing unit that is electrically connected to the kth scan line and the sensing unit that is electrically connected to the k+1th scan line are the result of the capacity measurement. 4. The sensing method of a touch device according to claim 3, wherein the j-th second data line is electrically connected to the sensing units on the 2n-1th row in the sensing array, and the i-th The first data line is electrically connected to the sensing units on the 2nth row in the sensing array, and the j+1th second data line is electrically connected to the sensing units on the 2n+1th row in the sensing array. The i+1 first data line is electrically connected to the sensing units on the 2n+2th row in the sensing array. When the kth and k+1th scanning lines output the scanning signal, the i-th first The third sensing data on the data line is the sum of the capacitances measured by the sensing unit in the kth column, row 2n and the sensing unit in the k+1th row, 2nth row, and the j+1th second data line The third sensing data above is the sum of capacitances measured by the sensing unit at column k, row 2n+1 and the sensing unit at column k+1, row 2n+1. 5. The sensing method of a touch device according to claim 4, wherein when the kth and k+1th scanning lines output the scanning signal, the sensing unit in the kth column and the 2nth row is connected to The mutual capacitance between the sensing unit in the kth column and the 2n+1 row, and the mutual capacitance between the k+1th column and the 2nth row and the k+1th column and the 2n+1 row of the sensing unit The sum of capacities is used as the first sensing data on the j+1th second data line. 6. A touch device, comprising a sensing electrode layer, the sensing electrode layer comprising: A plurality of sensing units are arranged into a sensing array with M columns and N rows; M scanning lines, the sensing units of each column in the sensing array are electrically connected to one of the M scanning lines; N data lines, the sensing units in each row of the sensing array are electrically connected to one of the N data lines, the data lines are defined as a plurality of first data lines and a plurality of second data lines, these The i-th first data line among the first data lines is located between the j-th and j+1-th second data lines among the second data lines, and the j+1-th second data line is located at the j-th between the i and i+1 first data lines; and A control unit operates in a mutual capacity mode and a self-capacitance mode. In the mutual capacity mode, the control unit outputs a data signal from the ith first data line, and sequentially outputs a data signal from the M scanning lines. At least one outputting a scanning signal, when the kth scanning line in the M scanning lines outputs the scanning signal, the control unit receives a first sensing data on each of the second data lines, and the control unit switches from the first i+1 first data lines output the data signal, and sequentially output the scan signal from at least one of the M scan lines, when the scan signal is output from the kth scan line in the M scan lines, the The control unit receives a second sensing data on each of the second data lines, wherein the first sensing data on the j+1th second data line is the sensing units in the kth column, electrically connected to The result of the mutual capacity measurement between the sensing unit on the j+1 second data line and the sensing unit electrically connected to the i first data line, the second sensing unit on the j+1 second data line Among the sensing units whose data is the kth column, the sensing unit electrically connected to the j+1 second data line and the sensing unit electrically connected to the i+1 first data line are measured for mutual capacitance. the result of. 7. The touch device according to claim 6, wherein the control unit sequentially outputs the scanning signal from any two adjacent scanning lines in the M scanning lines, when the first scanning line in the M scanning lines When the k and k+1th scanning lines output the scanning signal, the first sensing data on the j+1th second data line is associated with the sensing units in the kth and k+1th columns, The result of the mutual capacitance measurement between the sensing units electrically connected to the j+1th second data line and the sensing units electrically connected to the ith first data line. 8. The touch device according to claim 7, wherein in the self-capacitance mode, the control unit sequentially outputs the scan signal from any two adjacent scan lines in the M scan lines, when When the kth and k+1th scanning lines of the M scanning lines output the scanning signal, the control unit receives a third sensing data on each of the first data lines and receives each of the second data lines A third sensing data on the i-th first data line, wherein the third sensing data on the i-th first data line is associated with the sensing units electrically connected to the i-th first data line, and is electrically connected to the k-th scanning The sensing unit on the line and the sensing unit electrically connected to the k+1th scan line are self-capacity measurement results, and the third sensing data on the j+1th second data line is related to the j+1th line Among the sensing units electrically connected to the second data line, the sensing unit electrically connected to the kth scan line and the sensing unit electrically connected to the k+1th scan line are the result of the capacity measurement. 9. The touch device according to claim 8, wherein the j-th second data line is electrically connected to the sensing units on the 2n-1th row in the sensing array, and the i-th first data line Electrically connecting the sensing units on the 2nth row in the sensing array, the j+1 second data line is electrically connected to the sensing units on the 2n+1th row in the sensing array, the i+1th The first data line is electrically connected to the sensing units on the 2n+2th row in the sensing array. When the kth and k+1th scanning lines output the scanning signal, the i-th first data line The third sensing data is the sum of the capacitances measured by the sensing unit in the kth column and the 2nth row and the sensing unit in the k+1th column and the 2nth row. The three sensing data are the sum of the capacitances measured by the sensing unit at column k, row 2n+1 and the sensing unit at column k+1, row 2n+1. 10. The touch device according to claim 9, wherein when the kth and k+1th scanning lines output the scanning signal, the sensing unit in the kth column and the 2nth row is connected to the kth column and the kth row The mutual capacitance between the sensing units in row 2n+1, and the total mutual capacitance between the sensing unit in row 2n of column k+1 and the sensing unit in row 2n+1 of column k+1 is the first sensing data on the j+1th second data line. 11. The touch device according to claim 6, wherein each sensing unit comprises a conductor, and the length of the conductor in the extending direction of the scanning lines is equal to the length of the conductor in the extending direction of the data lines. 1.5 times to 3 times the length in the direction.