TWI863669B - Touch device - Google Patents

Abstract

A touch device includes a touch sensor and a plurality of traces. The plurality of traces are located on the first side of the touch sensor and are connected to a plurality of electrodes in the touch sensor. The touch device calculates the position of the stylus by selecting 2N+1 electrodes from the plurality of electrodes based on the electrodes contacted by the stylus. The first side comprises a first area adjacent to the electrode in contact with the stylus. A portion of the plurality of traces, which are connected to the plurality of electrodes, have a first line width, a portion of the 2N+1 electrodes, which are passing through or located in the first area, have the first line width, a portion of the electrode other than the 2N+1 electrode, which are passing or located in the first area, may have the first line width or have a second line width greater than the first line width.

Description

Touch device

The present invention relates to a touch device, and in particular to a wiring layout of a touch device.

FIG. 1 shows a conventional touch device. The touch device 10 of FIG. 1 includes a touch sensor 12, a controller 14, and a plurality of traces 161-168. The touch sensor 12 has a plurality of electrodes 121-128 arranged along the Y direction, and each electrode 121-128 extends along the X direction. The plurality of electrodes 121-128 are connected to the controller 14 through the traces 161-168, respectively. The controller 14 obtains the signal quantities of the plurality of electrodes 121-128 through the plurality of traces 161-168 to determine the position of the touch pen. In the conventional touch device 10, the electrode farther from the controller 14 needs to be connected to the controller through a longer trace, such as the electrode 121 and the trace 161. When all traces 161 to 168 have the same line width, the longer the trace 161 is, the greater the resistance of the trace 161 is. The greater the resistance of the trace 161 is, the greater the difference between the signal quantity obtained by the controller 14 and the actual signal quantity of the electrode 121 is, resulting in errors when the controller 14 calculates the position of the stylus.

One of the purposes of the present invention is to provide a touch control device.

According to the present invention, a touch device includes a controller and a touch panel. The touch panel includes a touch sensor and a plurality of wirings. The touch sensor includes a plurality of electrodes, the plurality of electrodes including a first electrode, a second electrode and a third electrode arranged along a first direction, the second electrode is between the first electrode and the third electrode and adjacent to the first electrode, and the distance between the first electrode and the controller is greater than the distance between the third electrode and the controller. The plurality of wirings are respectively connected to the plurality of electrodes to the controller via the first side of the touch sensor. The plurality of traces include a first trace, a second trace, and a third trace, which respectively connect the first electrode, the second electrode, and the third electrode to the controller. The first side includes a first region adjacent to the third electrode. The first trace has a first portion located on the first side and connected to the first electrode, and a second portion located on the first side and passing through the first region. The second trace has a third portion located on the first side and passing through the first region, and the third trace includes a fourth portion connected to the third electrode and located in the first region. In the first region, the fourth portion is located between the third electrode and the third portion, the third portion is located between the second portion and the fourth portion, the first portion, the third portion and the fourth portion have a first line width, and the second portion has a second line width greater than the first line width.

According to the present invention, a touch device includes a controller and a touch panel. The touch panel includes a touch sensor and a plurality of wirings. The touch sensor includes a plurality of electrodes arranged along a first direction, and the plurality of wirings are respectively connected to the plurality of electrodes to the controller via a first side of the touch sensor. The plurality of wirings are respectively connected to the plurality of electrodes to the controller via a first side of the touch sensor. A first electrode among the plurality of electrodes is farthest from the controller, and the first electrode is connected to the controller via a first wiring among the plurality of wirings. The first trace includes a first portion and a second portion, the first portion is located between the second portion and the first electrode, the first portion has a first line width, and the second portion has a second line width greater than the first line width. The width of the multiple traces within a specific width range adjacent to each electrode is the first line width, and a portion of at least two traces can pass through the specific width range.

The wiring layout of the touch device of the present invention can not only reduce the resistance of longer wiring, but also reduce the coupling effect of the touch pen at the edge of the touch sensor.

10: Touch device

10’: Touch device

12: Touch sensor

121: Electrode

122: Electrode

123:Electrode

124: Electrode

125: Electrode

126: Electrode

127: Electrode

128: Electrode

14: Controller

161: Routing

161’: Route

162: Routing

162’: Route

163: Routing

163’: Route

164: Routing

164’: Route

165: Routing

165’: Route

166: Routing

166’: Route

167: Routing

167’: Route

168: Routing

168’: Route

30: Display

32: Moving track

40: Touch device

41: Touch panel

42: Touch sensor

421:Electrode

422:Electrode

423:Electrode

424:Electrode

425:Electrode

426:Electrode

427:Electrode

428:Electrode

44: Controller

461: Routing

4611: Partial

4612: Partial

4613:Partial

462: Routing

4621: Partial

4622: Partial

4623: Partial

463: Routing

4631:Partial

4632: Partial

4633:Partial

464: Routing

4641: Partial

4642: Partial

4643:Partial

465: Routing

4651:Partial

4653:Partial

466: Routing

4661:Partial

4663:Partial

467: Routing

4671:Partial

4673:Partial

468: Routing

4681:Partial

4683:Partial

48: First Area

50: Touch device

60: Touch device

62: Touch panel

621: Base plate

622: First structural layer

623: Second structural layer

64: Touch sensor

6401:Electrode

6402:Electrode

6403:Electrode

6404:Electrode

6405:Electrode

6406:Electrode

6407:Electrode

6408:Electrode

6409:Electrode

6410:Electrode

6411:Electrode

6412:Electrode

66: Controller

6801: Routing

68011:Partial

6802: Routing

68021:Partial

6803: Routing

6804: Routing

6805: Routing

6806: Routing

6807: Routing

68071:Partial

6808: Routing

68081:Partial

6809: Routing

6810: Routing

6811: Routing

6812: Routing

70: Touch device

71: Group 1

72: Second Group

80: Touch device

81: Group 1

82: Second Group

83: Group 1

84: Second Group

85: Group 1

86: Second Group

90: Touch device

91: Group 1

92: Second Group

93: Group 1

94: Second Group

100: Touch device

101: Group 1

102: Second Group

103: Group 1

Figure 1 shows a traditional touch device.

Figure 2 shows a touch device that improves signal level drop.

FIG3 shows the movement trajectory generated based on the touch position information output by the touch device in FIG2.

FIG4 shows a first embodiment of the touch control device of the present invention.

Figure 5 shows a second embodiment of the touch device of the present invention.

FIG. 6 shows a first embodiment of a cross section along the section line AA’ in FIG. 5 .

FIG. 7 shows a second embodiment of the cross section of section line AA’ in FIG. 5 .

FIG8 shows a third embodiment of the touch device of the present invention.

FIG. 9 shows an embodiment of a cross section along the section line AA’ in FIG. 9 .

FIG10 shows a fourth embodiment of the touch device of the present invention.

FIG11 shows the fifth embodiment of the touch device of the present invention.

FIG12 shows the sixth embodiment of the touch device of the present invention.

One way to improve the signal drop problem of the traditional touch device 10 is to reduce the resistance of the longer traces. FIG2 shows a touch device 10' with improved signal drop, which has the same touch sensor 12 and controller 14 as the touch device 10 in FIG1, but the multiple electrodes 121-128 of the touch sensor 12 are connected to the controller 14 through traces 161'-168'. The difference between the touch device 10' in FIG2 and the touch device 10 in FIG1 is that the longer traces 161'-164' in the touch device 10' in FIG2 have a larger line width near the electrodes 121-124 to reduce the resistance, thereby improving the signal drop problem.

However, increasing the line width will also cause another problem, that is, when the touch pen moves linearly to the edge of the touch sensor 12, the tip of the touch pen will produce a coupling effect with the wiring below it. The larger the line width of the wiring, the greater the impact. For example, when the touch pen is located on the electrode 125 and moves linearly from right to left along the X direction, the controller 14 will obtain the signal quantity of the electrode 125 and the electrodes adjacent to it (such as electrodes 124 and 126), and obtain the touch position information of the touch pen through interpolation operation. The display 30 displays the moving trajectory 32 of the touch pen according to the touch position information, as shown in Figure 3. When the stylus moves to the left edge of the electrode 125, the trace 164' will couple with the stylus signal. Since the trace 164 has a larger line width, the amount of signal obtained by the controller 14 from the trace 164' will also increase, causing the contact position information calculated by the controller 14 to deviate from the actual position of the stylus, resulting in a moving trajectory 32 as shown in FIG3.

FIG. 4 shows a first embodiment of the touch device of the present invention. The touch device 40 of FIG. 4 includes a touch panel 41 and a controller 44 mounted on the touch panel 41. In one embodiment, the controller 44 may also be disposed on a circuit board other than the touch panel 41. The touch panel 41 includes a touch sensor 42 and a plurality of traces 461-468. The touch sensor 42 has 8 electrodes 421-428 arranged along the Y direction, and each electrode 421-428 extends along the X direction. The plurality of traces 461-468 respectively connect the plurality of electrodes 421-428 to the controller 44 via the first side of the touch sensor 42. In other embodiments, the number of electrodes of the touch sensor controller 44 may be more or less than 8.

The controller 44 is used to scan the touch sensor 42 to determine the position of an active touch pen. In this embodiment, the controller 44 calculates the position of the touch pen by interpolating the signal amounts of the five electrodes, including the Kth electrode with the largest signal amount, and the signal amounts of the two electrodes adjacent to the Kth electrode. For example, when the active touch pen is at electrode 425 in Figure 4, electrode 425 has the largest signal amount. The controller 44 interpolates the signal amount of electrode 425 and the signal amounts of its adjacent electrodes 423, 424, 426 and 427 to generate the coordinates of the touch pen.

In the touch device 40, the traces 461-464 are connected to the electrodes 421-424 far from the controller 44, and at least a portion of the traces 461-464 has a larger second line width to reduce resistance. For example, the trace 461 includes a portion 4611, a portion 4612, and a portion 4613, the trace 462 includes a portion 4621, a portion 4622, and a portion 4623, the trace 463 includes a portion 4631, a portion 4632, and a portion 4633, and the trace 464 includes a portion 4641, a portion 4642, and a portion 4643. Portion 4611 is connected between portion 4612 and electrode 421 and has a first line width, portion 4612 is between portion 4611 and portion 4613 and has a second line width greater than the first line width, and portion 4613 is connected between portion 4612 and controller 44 and has a third line width. The third line width may be greater than, equal to, or less than the second line width, or greater than, equal to, or less than the first line width. Portion 4621 is connected between portion 4622 and electrode 422 and has the first line width, portion 4622 is between portion 4621 and portion 4623 and has the second line width, and portion 4623 is connected between portion 4622 and controller 44 and has a third line width. Portion 4631 is connected between portion 4632 and electrode 423 and has the first line width, portion 4632 is between portion 4631 and portion 4633 and has the second line width, portion 4633 is connected between portion 4632 and controller 44 and has a third line width. Portion 4641 is connected between portion 4642 and electrode 424 and has the first line width, portion 4642 is between portion 4641 and portion 4643 and has the second line width, portion 4643 is connected between portion 4642 and controller 44 and has a third line width. The second line widths of portions 4612, 4622, 4632, and 4642 may be the same or different. In one embodiment, the closer to the controller 44, the smaller the width of the portions 4612, 4622, 4632, and 4642.

In the touch device 40, the traces 465-468 are connected to the electrodes 425-428 closer to the controller 44. The traces 465-468 do not include the portion with the second line width. In other words, the traces 465-468 only include the portions 4651-4681 with the first line width and the portions 4653-4683 with the third line width. The portion 4651 is connected between the electrode 425 and the portion 4653, the portion 4661 is connected between the electrode 426 and the portion 4663, the portion 4671 is connected between the electrode 427 and the portion 4673, the portion 4681 is connected between the electrode 428 and the portion 4683, and the portions 4653-4683 are connected to the controller 14.

The following describes the design concept of the line width of the present invention. It is assumed that the controller 44 performs interpolation operations based on the signal quantities of the electrode 425 and the electrodes 423, 424, 426 and 427 adjacent thereto to generate the coordinates of the stylus. The touch panel in FIG4 has a first area 48 located on the left side (first side) of the touch sensor 42, and the first area 48 is adjacent to the electrode 425. The trace 462 connects the electrode 422 to the controller 44. The trace 463 connects the electrode 423 to the controller 44. The trace 464 connects the electrode 424 to the controller 44. The trace 465 connects the electrode 425 to the controller 44. The trace 466 connects the electrode 426 to the controller 44. Trace 467 connects electrode 427 to controller 44. Trace 462~467 are all located on the left side of touch sensor 42. Electrode 423 is between electrode 422 and electrode 425. The distance between electrode 422 and controller 44 is greater than the distance between electrode 425 and controller 44. Trace 462 has a portion 4621 connected to electrode 422, and a portion 4622 passes through the first area 48. Trace 463 has a portion 4631 connected to electrode 423 and passes through the first area 48. Trace 464 has a portion 4641 connected to electrode 424 and passes through the first area 48. The trace 465 has a portion 4651 connected to the electrode 425, and the portion 4651 is located in the first region 48. As shown in FIG4 , in the first region 48, portions 4631 and 4641 are located between the portion 4622 and the portion 4651. The portions 4631, 4641, and 4651 in the first region 48 and the portion 4621 connected to the electrode 422 all have a first line width, and the portion 4622 in the first region 48 has a second line width greater than the first line width. As can be understood from FIG4 , the portions of the three traces closest to the left side of each electrode (e.g., portions 4651, 4641, and 4631) all have a thinner line width. Since electrodes 421 and 422 are not used for interpolation calculations, the portions 4612 and 4622 of traces 461 and 462 that pass through the first area 48 or are in the first area 48 have a thicker second line width, which helps to reduce resistance and does not affect the coordinate calculation of the stylus.

In one embodiment, the number of electrodes used by the controller for interpolation calculation is related to the design of the line width. The controller's interpolation calculation uses the signal quantities of 2N+1 adjacent electrodes, where N is a positive integer greater than or equal to 1. At least the N+1 nearest traces of each electrode in the X direction have a thinner first line width. This can be understood as traces within a specific width W1 range adjacent to each electrode in the X direction have a first line width, and this specific width range can at least allow N+1 traces to pass through. Taking Figure 4 as an example, the controller 44 uses the signal quantities of 5 electrodes for interpolation calculation, that is, N=2. The line width of multiple lines 461~468 within the range of width W adjacent to each electrode is the thinner first line width. 2+1 lines can pass through this width, that is, 3 lines. The thicker line width will be arranged in the range outside the width W1.

In one embodiment, the first line width is less than or equal to 20um, and the second line width is less than or equal to 50 and greater than 20um, but the present invention is not limited thereto.

As can be seen from the embodiment of FIG. 4 , the electrode farther from the controller 44 , such as the electrode 421 , uses a longer trace 461 , and the line width of the trace 461 changes from the first line width of the portion 4611 to the second line width of the portion 4612 , and finally changes to the portion 4613 having the third line width to connect to the controller 44 . In the embodiment of FIG. 4 , the portions 4611 and 4613 of the trace 461 have the same line width. In other embodiments, the line width of the portion 4611 may also be different from the line width of the portion 4613 . The designs of the other traces 462 , 463 and 464 are similar to the trace 461 , and will not be described in detail here .

In the embodiment shown in FIG. 4 , the controller 44 calculates the coordinates of the stylus in the Y direction by obtaining the signal quantities of five electrodes for interpolation. The five electrodes include the electrode with the largest signal quantity (e.g., electrode 425) and the two electrodes adjacent to it above and below (e.g., electrodes 423, 424, 426, and 427). The traces within a specific width W1 adjacent to each electrode in the X direction have the first line width. The second line width portions 4612, 4622, 4632, and 4642 are distributed outside the range of the three traces. In other embodiments, the controller may also use the signal quantities of three, seven, or other numbers of electrodes for interpolation to calculate the contact position of the object.

In one embodiment, the traces 461-468 are made of the same layer of metal. In order to reduce the width occupied by the traces, one approach is to reduce the line spacing between the traces. However, when the line spacing between the traces is too small, the coupling capacitance between the traces will increase, affecting the signal quantity obtained by the controller, so that the calculated contact position information may be deviated. Furthermore, due to the process technology, the reduction of the line spacing between the traces has its limit.

FIG5 shows a second embodiment of the touch device of the present invention. The touch device 60 includes a touch panel 62 and a controller 66 mounted on the touch panel 62. The touch panel 62 can be a transparent or opaque material. The touch panel 62 includes a touch sensor 64 and a plurality of traces 6801-6812. In one embodiment, the controller 66 can also be disposed on a circuit board other than the touch panel 62. The touch sensor 64 includes a plurality of electrodes 6401-6412. The plurality of electrodes 6401-6412 are divided into a first group and a second group, and the first group includes electrodes 6401, 6403, 6405, 6407, 6409, and 6411. The second group includes electrodes 6402, 6404, 6406, 6408, 6410, and 6412. The multiple traces 6801~6812 include a first group of traces and a second group of traces. The first group of traces includes traces 6801, 6803, 6805, 6807, 6809, and 6811, which are respectively connected to electrodes 6401, 6403, 6405, 6407, 6409, and 6411 in the first group. The second group of traces includes traces 6802, 6804, 6806, 6808, 6810, and 6812, which are respectively connected to electrodes 6402, 6404, 6406, 6408, 6410, and 6412 in the second group. The electrodes of the first group and the electrodes of the second group are arranged in an alternating manner. In FIG6 , the plurality of electrodes are divided into two groups, the first group is composed of an odd number of electrodes (such as the first, third, fifth and seventh electrodes), and the second group is composed of an even number of electrodes (such as the second, fourth, sixth and eighth electrodes), but the present invention is not limited thereto.

The first group of traces is located on the first metal layer of the touch panel 62, and the first group of traces includes traces 6801, 6803, 6805, 6807, 6809, 6811 respectively connected to electrodes 6401, 6403, 6405, 6407, 6409, 6411. In this embodiment, traces 6801, 6803, 6805, 6807, 6809, 6811 are part of the first metal layer. The second group of traces is located on the second metal layer of the touch panel 62, and the second group of traces includes traces 6802, 6804, 6806, 6808, 6810, 6812 respectively connected to electrodes 6402, 6404, 6406, 6408, 6410, 6412. In this embodiment, traces 6802, 6804, 6806, 6808, 6810, and 6812 are part of the second metal layer. In one embodiment, when multiple traces 6801-6812 and multiple electrodes 6401-6412 are located in different layers, the traces can be connected to the corresponding electrodes via through holes (not shown in the figure).

FIG6 shows a first embodiment of a cross section of section line AA' in FIG5. In FIG6, the touch panel 62 includes a base plate 621, a first structure layer 622, and a second structure layer 623. The second structure layer 623 is located on the base plate 621, and the first structure layer 622 is located on the second structure layer 623. The traces 6802, 6804, 6806, 6808, 6810, and 6812 of the second set of traces are located in the second structure layer 623 and formed on the upper surface of the base plate 621. The traces 6801, 6803, 6805, 6807, 6809, and 6811 of the first set of traces are located in the first structure layer 622 and formed on the upper surface of the second structure layer 623. The first group of traces is made of a conductor (e.g., metal or indium tin oxide ITO) in the first structure layer 622. The second group of traces is made of a conductor (e.g., metal or indium tin oxide ITO) in the second structure layer 623. Both the first structure layer and the second structure layer include an insulating layer covering the traces. Adjacent traces in the same structure layer have a line spacing b in the X direction. Adjacent traces in different structure layers have a line spacing c in the X direction, and the line spacing c is less than the line spacing b. Traces in different structure layers have a distance d in the Z direction. Assuming that the line spacing b is the minimum distance between two traces that can be achieved by the process technology, the trace configuration method of FIG6 can reduce the line spacing of adjacent traces (such as traces 6801 and 6802) to c, reducing the width occupied by the traces. Specifically, as shown in FIG6, the minimum width occupied by the traces of the touch device 60 is 12a+11c. If all traces are configured on the same layer, the minimum width of the border that can be obtained is 12a+11b. Therefore, the trace configuration methods of FIG5 and FIG6 can effectively reduce the width occupied by the traces, which is conducive to realizing a narrow border of the touch device 60.

In one embodiment, the line width a in FIG6 is greater than or equal to 10um, the line distance b is greater than or equal to 5um, and the distance d is less than or equal to 2um, but the present invention is not limited thereto.

FIG7 shows a second embodiment of the cross section of section line AA' in FIG5. In FIG7, the line width a of routing 6801~6812 is equal to or greater than the line spacing b', so that the edges of adjacent routings in different metal layers are aligned or partially overlapped in the Z direction. In one embodiment, the right edge of the first group of routings and the left edge of the second group of routings extending along the X direction are aligned in the Z direction, or the first group of routings and the second group of routings partially or completely overlap in the Z direction. For example, in FIG8, the right edge of part 68011 of routing 6801 and the left edge of part 68071 of routing 6807 can be aligned in the Z direction, or parts 68011 and 68071 can partially or completely overlap in the Z direction.

FIG8 shows a third embodiment of the touch device of the present invention. FIG9 shows an embodiment of a cross section of section line AA' in FIG8. The touch device 70 of FIG8 includes a touch panel 62 and a controller 66, similar to the touch device 60 of FIG5. The touch panel 62 includes a touch sensor 64 and a plurality of traces 6801-6812. The difference between FIG8 and FIG5 is that the first group of traces provided in the first structural layer of the touch panel 62 includes traces 6801-6806, and the second group of traces provided in the second structural layer of the touch panel 62 includes traces 6807-6812. The plurality of electrodes 6401-6412 in the touch sensor 64 are divided into a first group 71 and a second group 72. As shown in FIG8 , the electrodes included in the first group 71 and the second group 72 are adjacent. The first group 71 is connected to the first set of traces. The first group 71 includes electrodes 6401~6406 respectively connected to traces 6801~6806 set on the first structural layer 622, and the second group 72 includes electrodes 6407~6412 respectively connected to traces 6807~6812 set on the second structural layer.

The embodiment of FIG8 helps reduce the width occupied by the traces 6801-6812 in the X direction, and helps achieve a narrow frame when the touch device 70 is used as a touch screen. As shown in FIG8, in the X direction, the second set of traces is interlaced with the first set of traces, for example, the portion 68071 of the trace 6807 is located between the portion 68011 of the trace 6801 and the portion 68021 of the trace 6802, and the portion 68021 of the trace 6802 is between the portion 68071 of the trace 6807 and the portion 68081 of the trace 6808. For example, the stylus is located at electrode 6407 and the controller 66 uses the signal quantities of the three electrodes for interpolation calculation to calculate the coordinates. Although part 68071 is very close to 68011 and 68021, a large coupling capacitance may be formed. However, this coupling capacitance affects the signal quantities of electrodes 6401 and 6402. Since the signal quantities of electrodes 6401 and 6402 do not affect the interpolation calculation of electrode 6407, it can be understood that the embodiment of FIG. 8 can reduce the total width occupied by multiple traces in the X direction without affecting the accuracy of the contact coordinate calculation. In one embodiment, the right edge of the first group of traces and the left edge of the second group of traces extending along the X direction are aligned in the Z direction, or the first group of traces and the second group of traces partially or completely overlap in the Z direction, for example, the right edge of part 68011 and the left edge of part 68071 are aligned in the Z direction, or part 68011 and 68071 partially or completely overlap in the Z direction. Compared with the configuration in which all traces are in the same plane, the embodiment of FIG. 8 can greatly reduce the total width of the multiple traces in the X direction.

The method of dividing the electrodes of the touch sensor 64 into multiple groups is not limited to the embodiment shown in FIG. 8 , for example, the embodiments of FIG. 10 to FIG. 12 described below.

In FIG. 10 , the plurality of electrodes 6401 to 6412 in the touch sensor 64 are divided into three first groups 81, 83 and 85 and three second groups 82, 84 and 86. The electrodes of the three first groups 81, 83 and 85 are respectively connected to the traces of the first structure layer 622, and the electrodes of the three second groups 82, 84 and 86 are respectively connected to the traces of the second structure layer 623. Each first group includes two electrodes, and each second group includes two electrodes. In more detail, the first group 81 includes electrodes 6401 and 6402 respectively connected to the traces 6801 and 6802 disposed on the first structure layer 622. The second group 82 includes electrodes 6403 and 6404 connected to the traces 6803 and 6804 respectively set on the second structure layer 623. The first group 83 includes electrodes 6405 and 6406 connected to the traces 6805 and 6806 respectively set on the first structure layer 622. The second group 84 includes electrodes 6407 and 6408 connected to the traces 6807 and 6808 respectively set on the second structure layer 623. The first group 85 includes electrodes 6409 and 6410 connected to the traces 6809 and 6810 respectively set on the first structure layer 622. The second group 86 includes electrodes 6411 and 6412 connected to the traces 6811 and 6812 respectively set on the second structure layer 623.

In FIG. 11 , the plurality of electrodes 6401 to 6412 in the touch sensor 64 are divided into two first groups 91 and 93 and two second groups 92 and 94. The electrodes of the two first groups 91 and 93 are respectively connected to the traces of the first structure layer 622, and the electrodes of the two second groups 92 and 94 are respectively connected to the traces of the second structure layer 623. Each first group includes three electrodes, and each second group includes three electrodes. More specifically, the first group 91 includes electrodes 6401 to 6403 respectively connected to the traces 6801 to 6803 disposed on the first structure layer 622. The second group 92 includes electrodes 6404-6406 respectively connected to the traces 6804-6806 set on the second structure layer 623. The first group 93 includes electrodes 6407-6409 respectively connected to the traces 6807-6809 set on the first structure layer 622. The second group 94 includes electrodes 6410-6412 respectively connected to the traces 6810-6812 set on the second structure layer.

In the touch device 80 of FIG10 , each of the first groups 81, 83 and 85 and each of the second groups 82, 84 and 86 includes two electrodes. In an embodiment of this configuration, the controller 66 obtains the signal amounts of three electrodes each time and performs interpolation operations to obtain the touch position information. In the touch device 90 of FIG11 , each of the first groups 91 and 93 and each of the second groups 92 and 94 includes three electrodes. In an embodiment of this configuration, the controller 66 obtains the signal amounts of five electrodes each time and performs interpolation operations to obtain the touch position information. That is, according to an embodiment of the present invention, when the controller's interpolation operation uses the signal quantity of 2×N+1 electrodes, the number of electrodes in each first group and each second group is preferably at least N+1, but the present invention is not limited thereto.

In the embodiments of FIG. 8 , FIG. 10 and FIG. 11 , the number of electrodes included in each first group and each second group is the same, but the present invention is not limited thereto, and the number of electrodes included in each group may be different. For example, in the embodiment shown in FIG. 12 , the plurality of electrodes 6401 to 6412 in the touch sensor 64 are divided into two first groups 101 and 103 and one second group 102. The first group 101 includes adjacent electrodes 6401 to 6403 connected to traces 6801 to 6803 respectively disposed on the first structural layer 622. The second group 102 includes adjacent electrodes 6404 to 6409 connected to traces 6804 to 6809 respectively disposed on the second structural layer 623. The first group 103 includes adjacent electrodes 6410-6412 respectively connected to traces 6810-6812 disposed on the first structural layer 622.

In the embodiments of FIG. 5, FIG. 8, and FIG. 10 to FIG. 12, the routing lines 6801 to 6812 may have a first line width, or may be combined with the routing design of FIG. 4 so that a portion of the routing lines 6801 to 6812 has a second line width greater than the first line width, or a portion of the routing lines 6801 to 6812 has a third line width greater than, equal to, or less than the first line width.

In the embodiments of FIG. 5, FIG. 8, and FIG. 10 to FIG. 12, the plurality of electrodes of the touch sensor 64 arranged in parallel along the Y direction may be located in the first structure layer 622 or the second structure layer 623. In one embodiment, the plurality of electrodes 6401-6412 are located in the first structure layer 622, and are located in the same plane as the wiring of the first structure layer 622. The electrodes and the wiring in the first structure layer 622 are made of the same conductor (e.g., ITO or metal). The second structure layer 623 includes a plurality of vias (Via) filled with a conductor (e.g., ITO or metal) for electrical connection between the electrodes and the wiring in the second structure layer 623. In another embodiment, the plurality of electrodes 6401-6412 are located in the second structure layer 623, and are located in the same plane as the wiring of the second structure layer 623. The electrodes and wiring in the second structure layer 623 are made of the same conductor (such as ITO or). The second structure layer 623 includes a plurality of vias filled with a conductor (such as ITO or metal) for electrically connecting the electrodes to the wiring in the first structure layer 622.

Those familiar with the field of touch technology should understand that the above-mentioned touch sensor usually also includes multiple electrodes arranged in parallel along the X direction, and the wiring connecting these electrodes to the controller is relatively short. The configuration of these electrodes and their wiring is not the main problem to be solved by the present invention, so for the purpose of simplicity, it is omitted in the diagram and text description.

The above is only an embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above by the embodiment, it is not used to limit the present invention. Any person with ordinary knowledge in the relevant technical field can make some changes or modifications to the technical contents disclosed above as equivalent embodiments within the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

40: Touch device

41: Touch panel

42: Touch sensor

421:Electrode

422:Electrode

423:Electrode

424:Electrode

425:Electrode

426:Electrode

427:Electrode

428:Electrode

44: Controller

461: Routing

4611: Partial

4612: Partial

4613:Partial

462: Routing

4621: Partial

4622: Partial

4623: Partial

463: Routing

4631:Partial

4632: Partial

4633:Partial

464: Routing

4641: Partial

4642: Partial

4643:Partial

465: Routing

4651:Partial

4653:Partial

466: Routing

4661:Partial

4663:Partial

467: Routing

4671:Partial

4673:Partial

468: Routing

4681:Partial

4683:Partial

48: First Area

Claims (23)

A touch device includes: a controller; and a touch panel, including: a touch sensor, the touch sensor includes a plurality of electrodes, the plurality of electrodes include a first electrode, a second electrode and a third electrode arranged along a first direction, the second electrode is between the first electrode and the third electrode, and is adjacent to the first electrode, and the distance between the first electrode and the controller is The touch panel has a first area located at the touch panel. The first side of the sensor, the first region is adjacent to the third electrode, the first trace has a first portion located on the first side and connected to the first electrode, the first trace has a second portion connected to the first portion, the second portion is located on the first side and passes through the first region, the second trace has a third portion located on the first side and passes through the first region, the third trace includes a fourth portion connected to the third electrode and located in the first region, in the first region, the fourth portion is located between the third electrode and the third portion, the third portion is located between the second portion and the fourth portion, the first portion, the third portion and the fourth portion have a first line width, and the second portion has a second line width greater than the first line width. A touch device as described in claim 1, wherein the first line width is less than or equal to 20um. A touch control device as described in claim 1, wherein the second line width is less than or equal to 50um, and greater than 20um. A touch control device as described in claim 1, wherein the number of electrodes from the second electrode to the third electrode is N+1, and the controller uses the signal quantities of 2N+1 adjacent electrodes to perform interpolation operations to obtain a touch position information, wherein N is an integer greater than or equal to 1. A touch device as described in claim 1, wherein the touch panel includes a first structural layer and a second structural layer located below the first structural layer, wherein the plurality of electrodes are disposed on the first structural layer or the second structural layer, and the plurality of traces include a first group of traces and a second group of traces, wherein the first group of traces is located on the first structural layer, and the second group of traces is located on the second structural layer. A touch control device as described in claim 5, wherein the plurality of electrodes are divided into a first group and a second group, the electrodes of the first group are connected to the first set of traces, and the electrodes of the second group are connected to the second set of traces. A touch control device as described in claim 6, wherein the first group includes an odd number of electrodes of the plurality of electrodes, and the second group includes an even number of electrodes of the plurality of electrodes. A touch device as described in claim 6, wherein the first group is adjacent to the second group, the first group includes a plurality of adjacent electrodes, and the second group includes a plurality of adjacent electrodes. A touch device as described in claim 5, wherein the plurality of electrodes are divided into a plurality of first groups and at least one second group, each of the second groups is located between two of the first groups, the first group and the second group respectively include a plurality of adjacent electrodes, the plurality of adjacent electrodes of the plurality of first groups are connected to the first set of traces, and the plurality of adjacent electrodes of the at least one second group are connected to the second set of traces. A touch control device as described in claim 9, wherein the controller uses the signal quantities of 2N+1 adjacent electrodes of the plurality of electrodes to perform an interpolation operation to obtain a touch position information, wherein N is an integer greater than or equal to 1. A touch device as described in claim 10, wherein each of the first groups has N+1 electrodes, and each of the second groups has N+1 electrodes. A touch device as described in claim 5, wherein the first edge of the first group of traces extending along the first direction is aligned with the second edge of the second group of traces extending along the first direction in a second direction, or the first group of traces and the second group of traces partially or completely overlap in the second direction, wherein the first direction is perpendicular to the second direction. A touch device includes: a controller; and a touch panel, including a touch sensor and a plurality of wirings, wherein the touch sensor includes a plurality of electrodes arranged along a first direction, and the plurality of wirings are respectively connected to the plurality of electrodes via a first side of the touch sensor to the controller; wherein a first electrode among the plurality of electrodes is farthest from the controller, and the first electrode is connected to the controller via the first wiring among the plurality of wirings , the first trace includes a first portion and a second portion, the first portion is located between the second portion and the first electrode, the first portion has a first line width, and the second portion has a second line width greater than the first line width; wherein the width of the multiple traces within a specific width range adjacent to each electrode is the first line width, and a portion of at least two traces can pass through the specific width range. A touch control device as described in claim 13, wherein the first line width is less than or equal to 20um. A touch control device as described in claim 13, wherein the second line width is less than or equal to 50um and greater than 20um. A touch device as described in claim 13, wherein the touch panel includes a first structural layer and a second structural layer located below the first structural layer, wherein the plurality of electrodes are disposed on the first structural layer or the second structural layer, and the plurality of traces include a first group of traces and a second group of traces, wherein the first group of traces is located on the first structural layer, and the second group of traces is located on the second structural layer. A touch control device as described in claim 16, wherein the plurality of electrodes are divided into a first group and a second group, the electrodes of the first group are connected to the first set of traces, and the electrodes of the second group are connected to the second set of traces. A touch control device as described in claim 17, wherein the first group includes an odd number of electrodes of the plurality of electrodes, and the second group includes an even number of electrodes of the plurality of electrodes. A touch device as described in claim 17, wherein the first group is adjacent to the second group, the first group includes a plurality of adjacent electrodes, and the second group includes a plurality of adjacent electrodes. A touch control device as described in claim 16, wherein the plurality of electrodes are divided into a plurality of first groups and at least one second group, the second group is located between two of the first groups, the first group and the second group respectively include a plurality of adjacent electrodes, the plurality of adjacent electrodes of the plurality of first groups are connected to the first set of traces, and the plurality of adjacent electrodes of the at least one second group are connected to the second set of traces. A touch control device as described in claim 20, wherein the controller uses the signal quantities of 2N+1 adjacent electrodes of the plurality of electrodes to perform an interpolation operation to obtain a touch position information, wherein N is an integer greater than or equal to 1. A touch device as described in claim 21, wherein each of the first groups has N+1 electrodes, and each of the second groups has N+1 electrodes. The touch control device as claimed in claim 16, wherein a first edge of the first group of traces extending along the first direction is aligned with a second edge of the second group of traces extending along the first direction in a second direction, or the first group of traces and the second group of traces partially or completely overlap in the second direction, wherein the first direction is perpendicular to the second direction.