TWI499026B - Capacitive touch panel and electronic device thereof - Google Patents

Description

Capacitive touch panel and electronic device thereof

The present invention relates to a touch panel, and more particularly to a capacitive touch panel and an electronic device system thereof.

Currently, capacitive touch screens are commonly used in electronic products, and touch screens have touch panels. Generally, a capacitive touch panel has electrode shafts arranged along a first axial direction and a second axial direction (for example, an x-axis and a y-axis) (each electrode shaft has electrodes that are electrically connected to each other in the same axial direction), And these electrode axes are distributed across the substrate. The sensing principle of the capacitive touch panel is to sense the change of the capacitance value of the mutual capacitance of the electrode shafts of different axial directions to determine the contact surface of the touch tool (for example, the fingertip or the stylus of the user's finger) The position of the contact on the touch panel.

Please refer to FIG. 1. FIG. 1 is a plan view of a conventional touch panel. The capacitive touch panel 1 has a plurality of electrode shafts 10 to 13 and a plurality of insulating members 15. The electrode shafts 10 and 12 are arranged along a second axial direction (for example, the y-axis), and the electrode shafts 11 and 13 are arranged along a first axial direction (for example, an x-axis). The insulating member 15 is disposed at an intersection between the electrode shafts of different axial directions to electrically insulate the electrode shafts 10 and 12 from the electrode shafts 11 and 13. In addition, the electrode shafts 11 and 13 themselves have metal jumpers 111, 112, 131 and 132 to span the electrode axes 10 and 12 in the other direction.

The sensing principle of the conventional touch panel 1 is to sense the change in the capacitance value of the mutual capacitance of the electrode axes of different axial directions. When the contact surface of the touch tool touches the intersection of the electrode shafts 10 and 11, the capacitance of the mutual capacitance between the electrode shafts 10 and 11 is changed due to the field coupling effect of the contact surface of the touch tool. . Therefore, the touch sensing circuit of the back end can pass through the measuring electrode shaft 10 The capacitance value of the mutual capacitance with the intersection of 11 is changed to determine whether the intersection of the electrode shafts 10 and 11 is touched by the contact surface of the touch tool.

However, the above-mentioned conventional touch panel 1 must have two axial electrode axes 10 to 13 which are distributed on the substrate to complete the coordinate positioning. Therefore, three masks must be used in the process, and metal jumpers must be made to span the other one. Directional electrode shafts 10, 12. Accordingly, the conventional touch panel 1 has a problem of high manufacturing cost, difficulty in improving light transmittance, and poor visual effect.

The embodiment of the invention provides a capacitive touch panel, which comprises a substrate, a plurality of first electrodes and a plurality of second electrodes. The substrate includes a plurality of touch sections arranged along the first axial direction. A plurality of first electrodes are formed on the substrate, and each of the first electrodes is disposed in at least one touch interval. A plurality of second electrodes are formed on the substrate, and each of the second electrodes is disposed in at least one touch interval. The plurality of first electrodes and the plurality of second electrodes are arranged alternately and misaligned along the second axial direction, and the plurality of touch intervals of the adjacent first electrode and the second electrode have at least one touch The difference between the control intervals, and the distance between two adjacent first electrodes along the second axis and the distance between the two adjacent second electrodes are substantially equal to or smaller than the diameter of the contact surface of the touch tool.

The embodiment of the invention provides a capacitive touch panel, which comprises a substrate, n first electrodes and n second electrodes. The substrate includes a plurality of touch sections arranged along the first axial direction. The n first electrodes and the n second electrodes are formed on the substrate. The n first electrodes are arranged along the second axial direction and their lengths are sequentially increased, and the adjacent first electrodes have a difference of at least one touch interval, wherein n is greater than or equal to 2. The n second electrodes are respectively adjacent to the n first electrodes in the first axial direction. n second electrodes are arranged along the second axis and their lengths are sequentially decreased, and the adjacent second electrodes have at least one touch interval difference . The adjacent first electrode and the second electrode are respectively located in adjacent two touch sections.

The embodiment of the present invention further provides an electronic device including a touch sensing circuit, a system chip, and one of the above capacitive touch panels, wherein the touch sensing circuit is electrically connected to the capacitive touch panel, and the system The chip is electrically connected to the touch sensing circuit.

In summary, the embodiments of the present invention provide a capacitive touch panel and system and an electronic device thereof. The capacitive touch panel does not need to make a metal jumper, and only a layer of mask is needed in the process, so that the manufacturing cost is low, the light transmittance and the visual effect are better.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

The embodiment of the invention provides a capacitive touch panel and an electronic device thereof, wherein the capacitive touch panel is a coplanar capacitive touch panel, and self-capacitance sensing is used to determine the position of the contact. In addition, the capacitive touch panel does not need to make metal jumpers, and only a layer of mask is needed in the process, so that the manufacturing cost is low, the light transmittance and the visual effect are better.

[Embodiment of Capacitive Touch Panel]

Please refer to FIG. 2. FIG. 2 is a plan view of a capacitive touch panel according to an embodiment of the present invention. The capacitive touch panel 2 includes a plurality of electrodes 201 to 203, 211, 212, 221, 222, and 231 to 233, a substrate 25, and a plurality of trace lines L1 to L5 and R1 to R5. The substrate 25 has a plurality of touch sections (1, y) to (5, y) arranged along the first axial direction (for example, the x-axis). Multiple electrodes 201~ 203, 211, 212, 221, 222, and 231-233 are formed on the substrate 25 and disposed in at least one touch interval. The plurality of transmission lines L1 to L5 and R1 to R5 are electrically connected to the plurality of electrodes 201, 211, 202, 212, 203, 231, 221, 232, 222, and 233, respectively. The electrodes 201, 211, 202, 212 and 203 are arranged along the second axial direction (for example, the y-axis) in an alternating and misaligned manner. Similarly, the electrodes 231, 221, 232, 222, and 233 are arranged alternately and misaligned along the second axial direction (e.g., the y-axis). In this embodiment, the arrangement of the electrodes 201, 211, 202, 212, and 203 is substantially symmetrical with the arrangement of the electrodes 231, 221, 232, 222, and 233. However, the present invention is not limited thereto.

The first ends (eg, left ends) of the electrodes 201-203 protrude from the first ends of the electrodes 211, 212, and the second ends (eg, right ends) of the electrodes 211, 212 protrude from the second ends of the electrodes 201-203. The first ends of the electrodes 221 and 222 protrude from the first ends of the electrodes 231 to 233, and the second ends of the electrodes 231 to 233 protrude from the second ends of the electrodes 221 and 222.

In order to more accurately detect the touch position of the contact surface of the touch tool (such as the fingertip of the user's finger or the tip of the stylus), the user must touch at least the same touch interval at a time. Two or more electrodes (for example, electrodes 201 and 211 of the touch section (2, y)). Therefore, in the embodiment of the present invention, twice the distance d between two adjacent electrodes (for example, electrodes 201 and 211 or electrodes 211 and 202) along the first axial direction plus the width w of the electrode (for example, electrode 211) It must be equal to or smaller than the diameter of the contact surface of the touch tool (such as the diameter of the fingertip of the user's finger or the diameter of the tip of the stylus) to ensure that the contact surface of the touch tool can touch more than two electrodes. (eg electrodes 201, 211). In other words, the distance between the two adjacent electrodes 201, 202 of the touch section (1, y) must be approximately equal to or smaller than the diameter of the contact surface of the touch tool.

In the embodiment of the present invention, the electrodes 201-203 span the touch interval (1, y), (2, y), and the electrodes 211, 212 span the touch interval (2, y), (3, y), and the electrodes 221, 222 span the touch interval (3, y), (4, y), and the electrodes 231 ~ 233 span the touch interval (4, y), (5, y). In other words, the range of (1, y), (2, y) and (2, y) and (3) of the plurality of touch intervals in which the adjacent two electrodes (for example, electrodes 201 and 211) are alternately misaligned , the range of y) has a difference of at least one touch interval. In addition, although the above-described touch sections (1, y) to (5, y) are arranged in the x-axis direction as an example, in other embodiments, the y-axis directions may be arranged as an example. In summary, the invention is not limited thereto.

The sensing principle of the capacitive touch panel 2 is to sense the capacitance value change of the self-capacitance of each of the electrodes 201-203, 211, 212, 221, 222, and 231-233, and the electrodes 201-203, 211, 212, 221, The capacitance value change of the self-capacitance of 222 and 231~233 is related to the change of the signal quantity of the transmission lines L1~L5 and R1~R5. By detecting the transmission line L1~L5 and R1~R5, there are some semaphore changes, and the X coordinate value and the Y coordinate value of the contact position can be smoothly learned according to the number of the transmission line with the semaphore change.

When only the self-capacitance of at least one of the electrodes 201-203 changes, it indicates that the contact position is in the touch interval (1, y). When at least one of the electrodes 201 to 203 and the self-capacitance of at least one of the electrodes 211 and 212 are changed, it indicates that the contact position is in the touch interval (2, y). When there is a change in the self-capacitance of at least one of the electrodes 211, 212 and at least one of the electrodes 221, 222, it indicates that the contact position is in the touch interval (3, y). When at least one of the electrodes 221, 222 and the self-capacitance of at least one of the electrodes 231 to 233 are changed, it indicates that the contact position is in the touch interval 4, y). When only one of the electrodes 231 233 233 has a self-capacitance change, it indicates that the contact position is in the touch interval (5, y).

For example, when the contact surface of the touch tool touches the electrode 201 on the touch section (1, y), the capacitance of the self-capacitance of the electrode 201 can be known by acquiring the change of the signal amount on the transmission line L1. The value changes, and the X coordinate value of the contact position is 1 and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact with the electrode 201. For another example, when the contact surface of the touch tool touches the electrodes 201 and 211 on the touch section (2, y), the electrode can be known by transmitting the change of the signal amount on the transmission lines L1 and L2. The capacitance value of the self-capacitance of 201 and 211 changes, and the X coordinate value of the contact position is 2, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact of the electrodes 201 and 211. .

For example, when the contact surface of the touch tool touches the electrodes 211 and 221 on the touch section (3, y), the electrode can be known by transmitting the change of the signal amount on the transmission lines L2 and R2. The capacitance value of the self-capacitance of 211 and 221 changes, and the X coordinate value of the contact position is 3, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the touch of the electrodes 211 and 221 . For another example, when the contact surface of the touch tool touches the electrodes 232 and 222 on the touch section (4, y), the electrode can be known by transmitting the change of the signal amount on the transmission lines R3 and R4. The capacitance value of the self-capacitance of 232 and 222 changes, and the X coordinate value of the contact position is 4, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact of the electrodes 232 and 222. . As an additional example, when the contact surface of the touch tool touches the electrode 233 on the touch section (5, y), the change of the signal amount on the transmission line R5 is obtained, and the self of the electrode 233 can be known. The capacitance value of the capacitor changes, and the X coordinate value of the contact position is 5, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact of the electrode 233.

The electrodes of the capacitive touch panel 2 of FIG. 2 do not need to have metal jumpers. And in the process, only a layer of mask can be completed. Accordingly, the capacitive touch panel 2 has lower manufacturing cost, better light transmittance and visual effect than the conventional capacitive touch panel.

It should be noted that the materials, shapes, numbers and sizes of the electrodes 201-203, 211, 212, 221, 222, and 231-233 are not intended to limit the present invention. For example, the electrodes 201-203, 211, 212 The shapes of 221, 222, and 231 to 233 may be rectangular, elliptical, or hexagonal. Similarly, the material, shape and size of the substrate 25 are not intended to limit the invention.

[Another embodiment of a capacitive touch panel]

Please refer to FIG. 3. FIG. 3 is a plan view of a capacitive touch panel according to another embodiment of the present invention. The capacitive touch panel 3 includes a plurality of electrodes 301 to 303, 311, and 312, a substrate 32, and a plurality of transmission lines L1 to L3, R1, and R2. The plurality of electrodes 301 to 303, 311, and 312 are formed on the substrate 32, and the substrate 32 has a plurality of touch sections (1, y) to (3, y) arranged along the first axial direction. The plurality of transmission lines L1 to L3, R1, and R2 are electrically connected to the plurality of electrodes 301 to 303 and 311 to 312, respectively. The plurality of electrodes 301, 311, 302, 312 and 303 are arranged along the second axial direction (for example, the y-axis) in an alternating and dislocated manner.

The first ends (eg, left ends) of the electrodes 301-303 protrude from the first ends of the electrodes 311, 312, and the second ends (eg, right ends) of the electrodes 311, 312 protrude from the second ends of the electrodes 301-303.

In the embodiment of the present invention, the distance d between two adjacent electrodes along the first axial direction (for example, the electrodes 301 and 311 or the electrodes 311 and 302) plus the width w of the electrode (for example, the electrode 311) is about It is equal to or smaller than the contact surface diameter of the touch tool to ensure that the contact surface of the touch tool can touch more than two electrodes (for example, electrodes 301, 311). In other words, the distance between two adjacent electrodes 301, 302 of the touch interval (1, y) must be approximately equal to or less than The diameter of the contact surface of the touch tool.

In the embodiment of the present invention, the electrodes 301 301 303 span the touch sections (1, y), (2, y), and the electrodes 311, 312 straddle the touch sections (2, y), (3, y). In other words, the range of multiple touch intervals ((1, y), (2, y) and (2, y) and (3) of alternating misalignment and adjacent two electrodes (for example, electrodes 301 and 311) , the range of y) has a difference of at least one touch interval. In addition, although the above-described touch sections (1, y) to (3, y) are arranged in the x-axis direction as an example, in other embodiments, the y-axis directions may be arranged as an example. In summary, the invention is not limited thereto.

The sensing principle of the capacitive touch panel 3 is to sense the change in the capacitance value of the self-capacitance of each of the electrodes 301 to 303, 311, and 312, and the change in the capacitance value of the self-capacitance of the electrodes 301 to 303, 311, and 312 is related to the transmission line L1. The signal amount of ~L3, R1, and R2 changes. By detecting the semaphore changes of the transmission lines L1~L3, R1, and R2, it is possible to smoothly know the X coordinate value and the Y coordinate value of the contact position according to the number of the transmission line having the semaphore change.

When only one of the electrodes 301-303 has a change in self-capacitance, it indicates that the contact position is in the touch interval (1, y). When at least one of the electrodes 301-303 and the self-capacitance of at least one of the electrodes 311, 312 are changed, it indicates that the contact position is in the touch interval (2, y). When only the self-capacitance of at least one of the electrodes 311, 312 changes, it indicates that the contact position is in the touch interval (3, y).

For example, when the contact surface of the touch tool touches the electrode 301 on the touch section (1, y), the capacitance of the self-capacitance of the electrode 301 can be known by acquiring the change in the amount of the signal on the transmission line L1. The value changes, and the X coordinate value of the contact position is 1 and the Y coordinate value of the contact position is the Y coordinate value corresponding to the electrode 301. Another example is when When the contact surface of the control tool touches the electrodes 301 and 311 on the touch section (2, y), the capacitance of the self-capacitance of the electrodes 301 and 311 can be known by acquiring the change of the signal amount on the transmission lines L1 and R1. The value changes, and the X coordinate value of the contact position is 2, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the touch of the electrodes 301 and 311. For example, when the contact surface of the touch tool touches the electrode 312 on the touch section (3, y), the self-capacitance of the electrode 312 can be known by acquiring the change of the signal amount on the transmission line R2. The capacitance value changes, and the X coordinate value of the contact position is 3, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the electrode 312.

[Another embodiment of a capacitive touch panel]

Please refer to FIG. 4. FIG. 4 is a plan view of a capacitive touch panel according to another embodiment of the present invention. The capacitive touch panel 4 includes a plurality of electrodes 401 to 403, 411, 412, 421 to 423, a substrate 43 and a plurality of transmission lines L1 to L3, M1, and R1 to R3. The substrate 43 has a plurality of touch sections (1, y) to (4, y) arranged along the first axial direction (for example, the x-axis). The plurality of electrodes 401 to 423 are formed on the substrate 43 and are respectively disposed in at least one touch section. The plurality of transmission lines L1 to L3 and R1 to R3 are electrically connected to the plurality of electrodes 401 to 403 and 421 to 423, respectively, and the transmission line M1 is electrically connected to the plurality of electrodes 411 and 412. The electrodes 401, 411, 402, 412 and 403 are arranged along the second axis (for example, the y-axis) in an alternating and misaligned manner. Similarly, the electrodes 421, 411, 422, 412, and 423 are arranged alternately and misaligned along the second axial direction (e.g., the y-axis). In this embodiment, the arrangement of the electrodes 401 to 403 is substantially symmetrical with respect to the arrangement of the electrodes 421 to 423. However, the present invention is not limited thereto.

The first end (for example, the left end) of the electrodes 401 to 403 protrudes from the electrode 411, The first end of the 412, and the second end (eg, the right end) of the electrodes 411, 412 protrude from the second end of the electrodes 401-403. The first ends of the electrodes 411 and 412 protrude from the first ends of the electrodes 421 to 423, and the second ends of the electrodes 421 to 423 protrude from the second ends of the electrodes 411 and 412.

In an embodiment of the invention, twice the distance d between two adjacent electrodes (eg, electrodes 401 and 411 or electrodes 411 and 402) along the first axis plus the width w of the electrode (eg, electrode 411) is about It is equal to or smaller than the contact surface diameter of the touch tool to ensure that the contact surface of the touch tool can touch more than two electrodes (for example, electrodes 401, 411). In other words, the distance between the two adjacent electrodes 401, 402 of the touch section (1, y) must be approximately equal to or smaller than the diameter of the contact surface of the touch tool.

In the embodiment of the present invention, the electrodes 401~403 span the touch interval (1, y), (2, y), and the electrodes 411, 412 span the touch interval (2, y), (3, y), and The electrodes 421 to 423 span the touch sections (3, y) and (4, y). In other words, the range of multiple touch intervals ((1, y), (2, y) and (2, y) and (3) of alternating misalignment and adjacent two electrodes (for example, electrodes 401 and 411) , the range of y) has a difference of at least one touch interval. In addition, although the above-described touch sections (1, y) to (4, y) are arranged in the x-axis direction as an example, in other embodiments, the y-axis directions may be arranged as an example. In summary, the invention is not limited thereto.

The sensing principle of the capacitive touch panel 4 is to sense the change of the capacitance value of the self-capacitance of each of the electrodes 401 to 423, and the capacitance value of the self-capacitance of the electrodes 401 to 403, 411, 412, and 421 to 423 is related to the transmission line L1. The signal amount of ~L3, M1, R1~R3 changes. By detecting the transmission line L1~L3, M1, R1~R3, there are some semaphore changes, and the X coordinate value and the Y coordinate of the contact position can be smoothly learned according to the number of the transmission line with the semaphore change. value.

When only one of the electrodes 401 to 403 has a self-capacitance change, it indicates that the contact position is in the touch interval (1, y). When at least one of the electrodes 401 to 403 and the self-capacitance of at least one of the electrodes 411 and 412 are changed, it indicates that the contact position is in the touch interval (2, y). When there is a change in the self-capacitance of at least one of the electrodes 411, 412 and at least one of the electrodes 421 - 423, it indicates that the contact position is in the touch interval (3, y). When only the self-capacitance of at least one of the electrodes 421 to 423 changes, it indicates that the contact position is in the touch interval (4, y).

For example, when the contact surface of the touch tool touches the electrode 401 on the touch section (1, y), the capacitance of the self-capacitance of the electrode 401 can be known by acquiring the change of the signal amount on the transmission line L1. The value changes, and the X coordinate value of the contact position is 1 and the Y coordinate value of the contact position is the Y coordinate value corresponding to the electrode 401. For another example, when the contact surface of the touch tool touches the electrodes 401 and 411 on the touch section (2, y), the electrode can be known by transmitting the change of the signal amount on the transmission lines L1 and M1. The capacitance value of the self-capacitance of 401 and 411 changes, and the X coordinate value of the contact position is 2, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact of the electrodes 401 and 411. .

For example, when the contact surface of the touch tool touches the electrodes 412 and 423 on the touch section (3, y), the oscillating amount on the transmission lines M1 and R3 is obtained, and the electrode can be known. The capacitance values of the self-capacitance of 412 and 423 are changed, and the X coordinate value of the contact position is 3, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the touch of the electrodes 412 and 423. . For another example, when the contact surface of the touch tool touches the electrode 422 on the touch section (4, y), the semaphore on the transmission line R2 is obtained. If the change is made, the capacitance value of the self-capacitance of the electrode 422 is changed, and the X coordinate value of the contact position is 4, and the Y coordinate value of the contact position is corresponding to the touch of the electrode 422. Y coordinate value.

[Another embodiment of a capacitive touch panel]

Please refer to FIG. 5. FIG. 5 is a plan view of a capacitive touch panel according to another embodiment of the present invention. The capacitive touch panel 5 includes a plurality of electrodes 501 to 503, 511, 512, 521 to 523, 531, 532, 541 to 543, 551, 552, and 561 to 563, a substrate 57, and a plurality of transmission lines L1 to L10 and R1. R8. The plurality of electrodes 501 to 563 are formed on the substrate 25, and the electrodes 501 to 503, 511, 512, 521 to 523, 531, 532, 541 to 543, 551, 552, and 561 to 563 are formed on the substrate 57, and are respectively disposed on the substrate 57. At least one touch interval. The plurality of transmission lines L1 to L10 and R1 to R8 are electrically connected to the plurality of electrodes 501, 521, 511, 531, 502, 522, 512, 532, 503, 523, 561, 541, 551, 562, 542, 552, 563, respectively. , 543. The substrate 57 has a plurality of touch sections (1, y) to (8, y) arranged along the first axial direction (for example, the x-axis). The electrodes 501, 511, 502, 512 and 503 are arranged alternately and misaligned along the second axis (for example, the y-axis), and the plurality of electrodes 521, 511, 522, 512 and 523 are alternately and misaligned. The modes are arranged along a second axial direction (eg, the y-axis). The arrangement of the electrodes 501 to 503 is substantially symmetrical with respect to the arrangement of the electrodes 521 to 523. Based on the above description and the content shown in FIG. 5, the arrangement of the other electrodes 521 to 523, 531, 532, 541 to 543, 551, 552, and 561 to 563 can be deduced by analogy.

The first ends (eg, left ends) of the electrodes 501-503 protrude from the first ends of the electrodes 511, 512, and the second ends (eg, right ends) of the electrodes 511, 512 protrude from the second ends of the electrodes 501-503. The first ends of the electrodes 511 and 512 protrude from the first ends of the electrodes 521 to 523, and the second ends of the electrodes 521 to 523 protrude. Out of the second end of the electrodes 511, 512. Based on the above description and the content shown in FIG. 5, the positional correspondence between the first end and the second end of the other electrodes 521 to 523, 531, 532, 541 to 543, 551, 552, and 561 to 563 can be deduced by analogy.

In an embodiment of the invention, twice the distance d between two adjacent electrodes (eg, electrodes 501 and 511 or electrodes 511 and 502) along the first axis plus the width w of the electrode (eg, electrode 511) is about It is equal to or smaller than the diameter of the contact surface of the touch tool to ensure that the contact surface of the touch tool can touch more than two electrodes (for example, electrodes 501, 511). In other words, the distance between the two adjacent electrodes 501, 502 of the touch section (1, y) must be approximately equal to or smaller than the diameter of the contact surface of the touch tool.

In the embodiment of the present invention, the electrodes 501 to 503 span the touch interval (1, y), (2, y), and the electrodes 511 and 512 span the touch interval (2, y), (3, y), and the electrodes 521~523 spans the touch interval (3, y), (4, y), the electrodes 531, 532 span the touch interval (4, y), (5, y), and the electrodes 541 ~ 543 span the touch interval (5, y), (6, y), electrodes 551, 552 across the touch interval (6, y), (7, y), and electrodes 561 ~ 563 across the touch interval (7, y), ( 8, y). In other words, the range of multiple touch intervals ((1, y), (2, y) and (2, y) and (3) of alternating misalignment and adjacent two electrodes (for example, electrodes 501 and 511) , the range of y) has a difference of at least one touch interval. In addition, although the above-described touch sections (1, y) to (8, y) are arranged in the x-axis direction as an example, in other embodiments, the y-axis directions may be arranged as an example. In summary, the invention is not limited thereto.

The sensing principle of the capacitive touch panel 5 is to sense the capacitance value change of the self-capacitance of each of the electrodes 501 to 503, 511, 512, 521 to 523, 531, 532, 541 to 543, 551, 552, and 561 to 563. And 501~503, 511, 512, 521~523, 531, 532, 541~543, 551, 552, 561~ The change in the capacitance value of the self-capacitance of 563 is related to the change in the signal amount of the transmission lines L1 to L10 and R1 to R8. By detecting the transmission line L1~L10, R1~R8, there are some semaphore changes, and the X coordinate value and the Y coordinate value of the contact position can be smoothly learned according to the number of the transmission line with the semaphore change.

When only one of the electrodes 501 503 503 has a self-capacitance change, it indicates that the contact position is in the touch interval (1, y). When only one of the electrodes 561~563 has a self-capacitance change, it indicates that the contact position is in the touch interval (8, y). When there is a change in the self-capacitance of at least one of the electrodes 501 to 503 and at least one of the electrodes 511 and 512, it indicates that the contact position is in the touch interval (2, y). When there is a change in the self-capacitance of at least one of the electrodes 511, 512 and at least one of the electrodes 521 - 523, it indicates that the contact position is in the touch interval (3, y). When at least one of the electrodes 521 to 523 and the self-capacitance of at least one of the electrodes 531 and 532 are changed, it indicates that the contact position is in the touch section (4, y). When there is a change in the self-capacitance of at least one of the electrodes 531, 532 and at least one of the electrodes 541-543, it indicates that the contact position is in the touch interval (5, y). When at least one of the electrodes 541 to 543 and the self-capacitance of at least one of the electrodes 551 and 552 are changed, it indicates that the contact position is in the touch interval (6, y). When there is a change in the self-capacitance of at least one of the electrodes 551, 552 and at least one of the electrodes 561-563, it indicates that the contact position is in the touch interval (7, y).

For example, when the contact surface of the touch tool touches the electrodes 521 and 531 on the touch section (4, y), the electrode 521 can be known by acquiring the change of the signal amount on the transmission lines L2 and L4. The capacitance value of the self-capacitance of 531 changes, and the X coordinate value of the contact position is 4, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the touch of the electrode 521. Give another one For example, when the contact surface of the touch tool touches the electrode 562 on the touch section (8, y), the capacitance of the self-capacitance of the electrode 562 can be known by acquiring the change of the signal amount on the transmission line R4. The value changes, and the X coordinate value of the contact position is 8 and the Y coordinate value of the contact position is the Y coordinate value corresponding to the electrode 562.

[Another embodiment of a capacitive touch panel]

Please refer to FIG. 6. FIG. 6 is a plan view of a capacitive touch panel according to an embodiment of the present invention. The capacitive touch panel 8 includes a plurality of electrodes 801, 802, 811, 812, 821, 822, 831, and 832, a substrate 82, and a plurality of transmission lines L1 to L4 and R1 to R4. A plurality of electrodes 801, 802, 811, 812, 821, 822, 831, 832 are formed on the substrate 32, and the substrate 32 has a plurality of touch intervals (1, y) to (4, arranged along the first axial direction. y). The plurality of transmission lines L1 to L4 and R1 to R4 are electrically connected to the plurality of electrodes 801, 802, 811, 812, 831, 832, 821, and 822, respectively. The plurality of electrodes 801, 811, 802 and 812 are arranged along the second axial direction (for example, the y-axis) in an alternating and dislocated manner. The plurality of electrodes 821, 832, 822, and 832 are arranged along the second axial direction (for example, the y-axis) in an alternating and dislocated manner. The distance between the two adjacent electrodes 801 and 802 of the touch section (1, y) must be approximately equal to or smaller than the diameter of the contact surface of the touch tool.

In the embodiment of the present invention, the electrodes 801 and 802 are located in the touch section (1, y), the electrodes 811 and 812 are located in the touch section (2, y), and the electrodes 821 and 822 are located in the touch section (3, y), and the electrodes are 831, 832 are located in the touch zone (3, y). In other words, the range of the touch interval (the range of (1, y) and the range of (2, y)) in which the adjacent two electrodes (for example, electrodes 801 and 811) are alternately misaligned has a difference of at least one touch interval. . In addition, although the above-described touch sections (1, y) to (4, y) are arranged in the x-axis direction as an example, in other embodiments, the y-axis directions may be arranged as an example. In summary, the invention is not limited thereto.

The sensing principle of the capacitive touch panel 8 is to sense the change in the capacitance value of the self-capacitance of each of the electrodes 801, 802, 811, 812, 821, 822, 831, 832, and the electrodes 801, 802, 811, 812, 821, The change in the capacitance value of the self-capacitance of 822, 831, and 832 is related to the change in the signal amount of the transmission lines L1 to L4, R3, R4, R1, and R2. By detecting the transmission line L1~L4, R3, R4, R1, R2, there are some semaphore changes, and the X coordinate value and the Y coordinate value of the contact position can be smoothly learned according to the number of the transmission line with the semaphore change. .

[Another embodiment of a capacitive touch panel]

Please refer to FIG. 7. FIG. 7 is a plan view of a capacitive touch panel according to an embodiment of the present invention. The capacitive touch panel 6 includes a plurality of electrodes 601 to 605, 611 to 615, a substrate 62, and a plurality of transmission lines L1 to L5 and R1 to R5. The plurality of electrodes 601 to 605 and 611 to 615 are formed on the substrate 65, and the substrate 62 has a plurality of touch sections (1, y) to (6, 7y) arranged along the first axial direction. The plurality of transmission lines L1 to L5 and R1 to R5 are electrically connected to the plurality of electrodes 601 to 605 and 611 to 615, respectively. The plurality of electrodes 601-605 are arranged along the second axial direction (for example, the y-axis), and their lengths are sequentially increased. Two neighbors of the plurality of electrodes 601-605 have a difference of at least one touch interval. Similarly, the plurality of electrodes 611 to 615 are arranged along the second axial direction (for example, the y-axis), and their lengths are sequentially decreased. Two adjacent ones of the plurality of electrodes 611 to 615 have a difference in at least one touch interval. The plurality of electrodes 611 to 615 are respectively disposed on the plurality of electrodes 601 to 605 in the first axial direction, and the electrodes 601 to 605 are obliquely symmetric to the electrodes 611 to 605.

The second ends (eg, the right ends) of the electrodes 602-605 protrude from the second ends of the electrodes 601-604, respectively, and the first ends (eg, the left ends) of the electrodes 611-614 protrude from the first ends of the electrodes 612-615, respectively. The first ends of the electrodes 611-614 are interposed between the first end and the second end of the electrodes 602-605, and the electrodes 602~ The second end of the 605 is interposed between the first end and the second end of the electrodes 611-614. In other words, the two electrode systems (eg, electrodes 601, 611) adjacent to the first axial direction are respectively located in the adjacent two touch intervals (1, y) and (2, y).

In addition, n times the distance d between two adjacent electrodes (for example, electrodes 601, 602) plus n-1 times the width w of the electrodes must be equal to or smaller than the contact surface diameter of the touch tool (n is greater than or equal to 2), to ensure that the contact surface of the touch tool can touch n electrodes (for example, electrodes 601~605), where n is the number of electrodes of electrodes 601~605 or 611~615, and in this embodiment n is 5. In other words, the distance between the electrodes 601, 605 must be less than or equal to the diameter of the contact surface of the touch tool. In this embodiment, the Y coordinate values of the electrodes 601-615 corresponding to the contact positions are the same. In brief, the capacitive touch panel 6 includes two sets of electrodes 601-605 and 611-615 arranged on the substrate 62.

In more detail, the electrode 601 is located in the touch interval (1, y) and the electrode 611 spans the touch interval (2, y) ~ (6, y), and the electrode 602 spans the touch interval (1, y), ( 2, y) and the electrode 611 spans the touch interval (3, y) ~ (6, y), the electrode 603 spans the touch interval (1, y) ~ (3, y) and the electrode 613 spans the touch interval (4, y) ~ (6, y), the electrode 604 is located in the touch interval (1, y) ~ (4, y) and the electrode 614 spans the touch interval (5, y), (6, y), and The electrode 605 is located in the touch interval (1, y) ~ (5, y) across the longitudinal direction and the electrode 611 is located in the touch interval (6, y).

The sensing principle of the capacitive touch panel 2 is to sense the change of the capacitance value of the self-capacitance of each electrode 601-615, and the capacitance value of the self-capacitance of 601-615 is related to the signal quantity of the transmission lines L1~L5 and R1~R5. Variety. Through detecting the transmission line L1~L5, R1~R5, there are some semaphore changes, and the X coordinate value and the Y coordinate value of the contact position can be smoothly learned according to the number of the transmission line with the semaphore change.

For example, when the contact surface of the touch tool touches the electrodes 601 to 605 on the touch section (1, y), the electrode 601 can be known by acquiring the change of the signal amount on the transmission lines L1 to L5. The capacitance value of the self-capacitance of 605 changes, and it is known that the X coordinate value of the contact position is 1, and the Y coordinate value of the contact position is the Y coordinate value corresponding to the contact of the electrodes 601 to 605. For another example, when the contact surface of the touch tool touches the electrodes 611 and 602 to 605 on the touch section (2, y), the signal amount on the transmission lines R1, L2 to L5 is changed. It can be known that the capacitance value of the self-capacitance of the electrodes 611, 602~605 changes, and the X coordinate value of the contact position is 2, and the Y coordinate value of the contact position touches the electrodes 611, 602~ The Y coordinate value corresponding to 605 hours.

It can be seen from the above that when the capacitance values of the self-capacitance of the electrodes 601-605 change, the X coordinate value of the contact position is 1; when the capacitance values of the self-capacitance of the electrodes 611-615 change, the position of the contact is indicated. The X coordinate value is 6; and when the capacitance values of the self-capacitance of the electrodes 60j~605 and 61i are changed, it indicates that the X coordinate value of the contact position is j, where j is an integer of 2 to 5, and i=j-1 .

[Embodiment of Electronic Device]

Please refer to FIG. 8. FIG. 8 is a block diagram of an electronic device according to an embodiment of the present invention. The electronic device 7 includes a capacitive touch panel 70, a touch sensing circuit 71, and a system chip 72. The capacitive touch panel 70 is electrically connected to the touch sensing circuit 71, and the touch sensing circuit 71 is electrically connected to the system. Wafer 72. The capacitive touch panel 70 can be a capacitive touch panel of one of the above embodiments. The touch sensing circuit 71 (including the driving circuit, the sensing circuit and the digital signal processing chip) is used to determine whether each transmission line on the capacitive touch panel 70 has a semaphore change, thereby obtaining a contact position. System chip 72 Used to receive information on the position of the contact, and execute the corresponding command or function according to the information.

[Possible efficacy of the embodiment]

In summary, the embodiments of the present invention provide a structure of a plurality of capacitive touch panels that require only one photomask in the process. Therefore, the capacitive touch panel and the electronic device thereof have the advantages of low cost. In addition, since the capacitive touch panel does not require metal jumpers, it can have better light transmission green and visual effects.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.

1‧‧‧Traditional capacitive touch panel

10~13‧‧‧electrode shaft

111, 112, 131, 132‧‧‧ metal jumpers

15‧‧‧Insulation components

2~6, 8, 70‧‧‧ capacitive touch panel

201~233, 301~312, 401~423, 501~563, 601~615, 801~832‧‧‧ electrodes

25, 32, 43, 57, 62, 82‧‧‧ substrates

L1~L10, R1~R8, M1‧‧‧ transmission line

(1, y) ~ (8, y) ‧ ‧ touch interval

7‧‧‧Electronic devices

71‧‧‧Touch sensing circuit

72‧‧‧System Chip

D‧‧‧ Distance between two adjacent electrodes

w‧‧‧The width of the electrode

1 is a plan view of a conventional capacitive touch panel.

2 is a plan view of a capacitive touch panel in accordance with an embodiment of the present invention.

3 is a plan view of a capacitive touch panel according to another embodiment of the present invention.

4 is a plan view of a capacitive touch panel according to another embodiment of the present invention.

FIG. 5 is a plan view of a capacitive touch panel according to another embodiment of the present invention.

FIG. 6 is a plan view of a capacitive touch panel according to another embodiment of the present invention.

FIG. 7 is a plan view of a capacitive touch panel according to another embodiment of the present invention.

Figure 8 is a block diagram of an electronic device in accordance with an embodiment of the present invention.

2‧‧‧Capacitive touch panel

201~233‧‧‧electrode

25‧‧‧Substrate

L1~L5, R1~R5‧‧‧ transmission line

(1, y) ~ (5, y) ‧ ‧ touch range

D‧‧‧ Distance between two adjacent electrodes

w‧‧‧The width of the electrode

Claims (20)

A capacitive touch panel includes a substrate including a plurality of touch sections disposed along a first axial direction, and a plurality of first electrodes formed on the substrate, each of the first electrodes The second electrode is disposed on the substrate, and the second electrode is disposed on the at least one touch region; wherein the first electrode and the second electrode are along a The second axial direction is arranged alternately and misaligned, and the range of the touch intervals adjacent to the first electrode and the second electrode has a difference of at least one touch interval, and along the second axial direction The distance between two adjacent first electrodes and the distance between two adjacent second electrodes are substantially equal to or smaller than the diameter of the contact surface of a touch tool; the touch intervals are sequentially along the first axis For the first to third touch zones, the first electrodes span the first and second touch zones, and the second electrodes span the second and third touch zones; At least one of the first electrodes has a capacitance value change of the self capacitance The coordinate value of the first contact in the first axial direction is located in the first touch interval, and at least one of the first electrodes and at least one of the second electrodes have a self-capacitance capacitance If the value is changed, it is determined that the coordinate value of the contact position in the first axial direction is located in the second touch interval, and when only at least one of the second electrodes has a capacitance value change of the self-capacitance, determining the The coordinate value of the contact position in the first axial direction is located in the third touch interval. The capacitive touch panel of claim 1, further comprising: a plurality of transmission lines electrically connecting the first electrodes and the second electrodes. The capacitive touch panel of claim 1, wherein the first and second electrodes are rectangular, elliptical or hexagonal in shape. A capacitive touch panel includes a substrate including a plurality of touch sections disposed along a first axial direction, and a plurality of first electrodes formed on the substrate, each of the first electrodes The second electrode is disposed on the substrate, and the second electrode is disposed on the at least one touch interval; the plurality of third electrodes are formed on the substrate, and each of the third electrodes is disposed And the plurality of fourth electrodes are formed on the substrate, and the third electrodes are disposed in the at least one touch interval; wherein the first electrodes and the second electrodes are along the first The two axial directions are arranged in an alternating and misaligned manner, and the touch regions of the adjacent first electrode and the second electrode have a difference of at least one touch interval, and two along the second axial direction The distance between the adjacent first electrodes and the distance between the two adjacent second electrodes are substantially equal to or smaller than the diameter of the contact surface of the touch tool; the third electrode and the fourth electrodes are along the The second axis is alternated and dislocated Arranging, the adjacent touch regions of the third electrode and the fourth electrode have a difference of at least one touch interval, and between the two adjacent third electrodes along the second axis The distance between the distance and the two adjacent fourth electrodes is substantially equal to or smaller than the diameter of the contact surface of the touch tool; the touch intervals are sequentially a first to fifth touch along the first axis. The first electrode spans the first and second touch sections, the second electrodes span the second and third touch sections, and the third electrodes span the third and fourth a touch interval, and the fourth electrodes straddle the fourth and fifth touch regions, wherein the first and second electrodes are arranged The equation is symmetrical to the arrangement of the third and fourth electrodes. The capacitive touch panel of claim 4, further comprising: a plurality of transmission lines electrically connecting the first to fourth electrodes. The capacitive touch panel of claim 4, wherein when at least one of the first electrodes has a capacitance value change of the self-capacitance, determining a contact position in the first axial direction The coordinate value is located in the first touch interval, and when at least one of the first electrodes and at least one of the second electrodes have a capacitance value change of the self capacitance, determining the contact position at the first An axial coordinate value is located in the second touch interval, and when there is a capacitance value change of at least one of the second electrodes and at least one of the third electrodes, the contact is determined The coordinate value of the first axial direction is located in the third touch interval, and when at least one of the third electrodes and at least one of the fourth electrodes have a self-capacitance capacitance change, Determining that the coordinate value of the contact position in the first axial direction is located in the fourth touch interval. When only at least one of the fourth electrodes has a capacitance value change of the self-capacitance, determining the contact position is The first axial coordinate value is located in the fifth touch area between. A capacitive touch panel includes a substrate including a plurality of touch sections disposed along a first axial direction, and a plurality of first electrodes formed on the substrate, each of the first electrodes The second electrode is disposed on the substrate, and the second electrode is disposed on the at least one touch interval; the plurality of third electrodes are formed on the substrate, and each of the third electrodes is disposed In at least one touch interval; wherein the first electrodes and the second electrodes are intersected along a second axis Arranging the misalignment manner, the range of the touch intervals adjacent to the first electrode and the second electrode has a difference of at least one touch interval, and two adjacent first along the second axis The distance between the electrodes and the distance between two adjacent second electrodes is substantially equal to or smaller than the diameter of the contact surface of a touch tool; the second electrodes and the third electrodes are along the second axis Arranging in an alternate and misaligned manner, the range of the touch intervals in which the second electrode and the third electrode are adjacent has a difference of at least one touch interval, and two adjacent positions along the second axis The distance between the third electrodes is substantially equal to or smaller than the diameter of the contact surface of the touch tool; the touch intervals are sequentially along the first axis to be a first to fourth touch intervals. An electrode spans the first and second touch zones, the second electrodes span the second and third touch zones, and the third electrodes span the third and fourth touch zones. The arrangement of the first electrodes is symmetrical to the arrangement of the third electrodes. The capacitive touch panel of claim 7, further comprising: a plurality of transmission lines electrically connected to the first to third electrodes, wherein the second electrodes share the same transmission line. The capacitive touch panel of claim 7, wherein when only at least one of the first electrodes has a capacitance value change of the self capacitance, determining a contact position in the first axial direction The coordinate value is located in the first touch interval, and when at least one of the first electrodes and at least one of the second electrodes have a capacitance value change of the self capacitance, determining the contact position is The first axial coordinate value is located in the second touch interval, and when at least one of the second electrodes and at least one of the third electrodes have a capacitance value change of the self capacitance, the touch is determined The coordinate value of the point position in the first axial direction is located in the third touch interval, and when only at least one of the third electrodes has a capacitance value change of the self capacitance, Determining that the coordinate value of the contact position in the first axial direction is located in the fourth touch interval. A capacitive touch panel includes a substrate including a plurality of touch sections disposed along a first axial direction, and a plurality of first electrodes formed on the substrate, each of the first electrodes The second electrode is disposed on the substrate, and each of the second electrodes is disposed on the at least one touch region; and the plurality of third to Xth electrodes are formed on the substrate, each of the The k electrode is disposed in at least one touch interval, wherein X is a positive integer greater than or equal to 3, and k is a positive integer greater than or equal to 3 and less than or equal to X; wherein the first electrode and the second electrode are along a second axial direction is arranged alternately and misaligned, and the range of the touch intervals adjacent to the first electrode and the second electrode has a difference of at least one touch interval, and along the second axial direction The distance between two adjacent first electrodes and the distance between two adjacent second electrodes are substantially equal to or smaller than the diameter of the contact surface of a touch tool; the k-1th electrode and the kth electrode Between alternating and dislocations along the second axis The range of the touch intervals in which the k-1th electrode and the kth electrode are adjacent has a difference of at least one touch interval, and between the two adjacent kth electrodes along the second axis The distance is substantially equal to or smaller than the diameter of the contact surface of the touch tool; the touch intervals are sequentially along the first axis to be a first to X+1 touch interval, and the ith electrodes are horizontally The i-th and the (i+1)th touch interval, wherein i is a positive integer greater than or equal to 1 and less than or equal to X, and the arrangement of the s electrodes is symmetric with respect to the arrangement of the s+2 electrodes, Where s is an odd number greater than or equal to 1 and less than or equal to X. The capacitive touch panel of claim 10, further comprising: a plurality of transmission lines electrically connecting the first to the Xth electrodes. The capacitive touch panel of claim 10, wherein when only at least one of the first electrodes has a capacitance value change of the self capacitance, determining a contact position in the first axial direction The coordinate value is located in the first touch interval. When only one of the X-th electrodes has a capacitance value change of the self-capacitance, it is determined that the coordinate value of the contact position in the first axis is located at the first In the X+1 touch interval, when at least one of the ith electrodes and at least one of the ith +1 electrodes have a self-capacitance capacitance change, determining the contact position at the first The axial coordinate value is located in the i-th touch interval. A capacitive touch panel includes: a substrate, comprising a plurality of touch sections, wherein the touch sections are arranged along a first axial direction; n first electrodes are formed on the substrate, the n first The electrodes are arranged along a second axial direction and their lengths are sequentially increased. The adjacent first electrodes have a difference of at least one touch interval, wherein n is greater than or equal to 2; and n second electrodes are formed on the substrate and Adjacent to the first electrodes in the first axial direction, the n second electrodes are arranged along the second axial direction and the length thereof is sequentially decreased, and the adjacent second electrodes have at least one touch interval. The difference is that the first electrode and the second electrode system adjacent to each other are located in adjacent two touch sections. The capacitive touch panel of claim 13, wherein the touch intervals are sequentially along the first axis from a first to an n+1th touch interval along the second axis The upward kth first electrode spans the first to kth touch intervals, and the kth second electrode along the first axis spans the k+1th to n+1th touch intervals, wherein k is an integer from 1 to n, and the first first electrode and the nth The distance between the first electrodes must be equal to or smaller than the diameter of the contact surface of a touch tool. The capacitive touch panel of claim 13 further comprising: a plurality of transmission lines electrically connecting the first and second electrodes. The capacitive touch panel of claim 13, wherein the capacitance values of the self-capacitances of the first and second electrodes are sensed to obtain a contact position. The capacitive touch panel of claim 13, wherein when the capacitance values of the self-capacitance of the first to nth first electrodes along the second axis are changed, determining a contact position In the first touch interval, when the capacitance values of the self-capacitance of the first to nth second electrodes along the second axis change, it is determined that the contact position is located in the n+1th touch interval. When the capacitance values of the self-capacitance of the jth to nth first electrodes and the first to the ith second electrodes along the second axis are changed, determining that the contact position is located at the jth touch Interval, where j is an integer from 2 to n-1, and i=j-1. The capacitive touch panel of claim 13, wherein the first and second electrodes are rectangular, elliptical or hexagonal in shape. The capacitive touch panel of claim 13, wherein the n first and second electrodes are obliquely symmetrical to each other. An electronic device comprising: a capacitive touch panel according to any one of claims 1 to 19; a touch sensing circuit electrically connected to the capacitive touch panel; and a system wafer, The touch sensing circuit is connected.