TW201514783A - Touch apparatus - Google Patents

Abstract

The present invention relates a touch apparatus. The touch apparatus includes a display area and a border area which is a non-transparent area. The border area includes a touch sub-area and a trace sub-area. The touch sub-area is positioned between the display area and the trace area. A plenty of sensor pads are positioned in the display area and the touch sub-area, and configured to receive touch operations of a user. A plenty of traces are positioned in the trace sub-area and configured to provide a driving signal to the sensor pads by connecting the sensor pads to a driving circuit. At least one of the traces is overlapped with the sensor pad in the touch sub-area, and an insulation layer is positioned between the traces and the sensor overlapped with the traces. The insulation layer defines a plenty of through holes. The traces are electronically connected with the sensor pads through the through holes.

Description

Touch device

The invention relates to a touch device.

At present, touch devices with touch functions are becoming more and more popular. In general, a touch device includes a display panel and a touch panel. The touch panel can be built in the display panel or externally attached to the display panel. At present, the touch panel is roughly classified into a resistive touch panel, an optical touch panel, and a capacitive touch panel according to different sensing modes.

The interface circuit of the resistive touch panel is mainly a serial data circuit and a USB data interface circuit, and generally has four-wire and five-wire systems. The panel portion of the resistive touch panel is a multi-layer composite film. The four-wire resistive touch panel is illustrated as an example. The four-wire resistive touch panel is covered with two layers of transparency between the surface protective coating and the substrate. The conductive layer, the two transparent conductive layers respectively correspond to the X and Y axes, and the two transparent conductive layers are insulated by fine transparent insulating particles. When the pressure is touched, the two conductive layers are turned on, and the resistance value is changed. Touch the X and Y coordinates of the action. The existing resistive touch panel user directly touches the touch panel for touch, and pressing the touch panel for a long time easily deforms the touch panel, thereby causing an inaccurate contact point and affecting the accuracy of the touch screen.

The optical touch panel generally includes a transparent substrate, a photosensitive element disposed on the upper and lower surfaces of the transparent substrate, a reflective substrate located below the smooth surface element, and a light source disposed on one side of the reflective substrate. The principle of the optical touch panel sensing is: when a finger (or a stylus) touches the upper surface of the transparent substrate, the measurement light emitted by the light source is projected onto the tip of the finger through the reflection of the reflective substrate, and the measurement light is at the tip of the finger. The reflected reflection, which is then projected onto the photosensitive element, is detected by the photosensitive element, and finally the position of the fingertip touch point is known from the detected reflected light. However, the optical touch panel is susceptible to interference from external light sources, thereby affecting the accuracy of the touch detection position of the optical touch screen.

Since capacitive touch panels have high touch sensitivity, they are widely used. In the prior art, the touch electrodes of the capacitive touch panel are directly connected in the same plane by the sensing series and the connection traces disposed at the edges of the touch panel. The connection trace is used to provide a voltage signal for the sense string. Since the connection trace is generally opaque, the area where the connection trace is located is covered with an ink layer to cover the connection trace. Generally, in order to prevent mutual interference of the electrical signals between the sensing series and the connecting traces in the display area of the touch panel, the edge of the display area of the touch panel and the connection trace closest to the edge of the display area are A certain area is reserved (usually 0.1 to 0.5 mm in width). The reserved area is covered with a sensing series and covered with an ink layer to reduce mutual interference of the electrical signals between the sensing series and the connecting trace of the display area and to have the edge of the touch panel display area Better touch sensitivity. The reserved area and the display area constitute a touch area of the touch panel. The reserved area and the area where the connection trace is located are covered with an ink layer to form a border area of the touch panel. Since the sensing series of the existing touch electrodes are directly connected to the connection traces in the same plane, the reserved area exists, so that the border of the existing touch device is wider.

The semiconductor device of the present invention will be described below by way of examples.

A touch device includes:

The plurality of sensing pads are used to sense the touch operation;

A plurality of connection traces are electrically connected to the corresponding sensing pads for connecting the sensing pads and the driving circuit to provide electrical signals for the sensing pads;

The sensing pad is at least partially overlapped with the connecting trace, and at the overlapping, an insulating layer is disposed between the sensing pad and the connecting trace, the insulating layer is provided with a plurality of through holes, and the sensing pad is connected with the corresponding The traces are electrically connected through the through holes.

A touch device includes: a light-transmissive display area and a non-transparent frame area outside the display area, the frame area includes a touch area and a trace area, and the touch area is disposed in the display area and the walk Between the line areas, a plurality of sensing pads are distributed in the display area and the touch area is used for sensing a touch operation, and a plurality of connection traces are located in the routing area, and the plurality of connection traces and corresponding sensing are performed. a pad connection for connecting the sensing pad and the driving circuit to provide an electrical signal for the sensing pad, and at least a portion of the connecting wire electrically connected to the sensing pad extends to the touch area and is stacked with the sensing pad An insulating layer is disposed between the sensing pads and the connection traces, and the insulating layer is provided with a plurality of through holes, and the sensing pads located in the touch area realize the corresponding connection traces in the routing area through the through holes Electrical connection.

Compared with the prior art, the sensing pad in the touch area in the frame area of the present invention at least partially overlaps with the connecting trace in the routing area, and is disposed between the sensing pad and the connecting trace of the overlapping portion. The first insulating layer is provided with a plurality of through holes, and the different sensing pads are electrically connected to the corresponding connecting traces through the corresponding through holes. In order to achieve a technical effect of narrowing the frame of the touch device.

FIG. 1 is a schematic structural diagram of a touch panel of a touch device according to an embodiment of the present invention.

2 is a schematic view showing the side structure of the touch device.

3 is a top plan view of a first preferred embodiment of a touch electrode of a touch panel in the touch device of the present invention.

4 is a top plan view of a second preferred embodiment of a touch electrode of a touch panel in the touch device of the present invention.

FIG. 5 is a top plan view of a third preferred embodiment of a touch electrode of a touch panel in the touch device of the present invention.

6 is a cross-sectional view of the first embodiment of the touch panel of FIG. 4 taken along line III-III of the present invention.

7 is a cross-sectional view of the second embodiment of the touch panel of FIG. 4 taken along line III-III of the present invention.

8 is a cross-sectional view of the touch panel of FIG. 4 taken along line III-III of the third embodiment of the present invention.

9 is a cross-sectional view of the touch panel of FIG. 4 taken along line III-III of the fourth embodiment of the present invention.

10 is a cross-sectional view of the fifth embodiment of the touch panel of FIG. 4 taken along line III-III of the present invention.

11 is a cross-sectional view of the touch panel of FIG. 4 taken along line III-III of the sixth embodiment of the present invention.

Figure 12 is a cross-sectional view of the touch panel of Figure 4 taken along line III-III of the seventh embodiment of the present invention.

13 is a cross-sectional view of the touch panel of FIG. 4 taken along line III-III of the eighth embodiment of the present invention.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a touch panel structure 30 of a touch device 1 according to an embodiment of the present invention. The touch panel 1 includes a touch panel 30. The touch panel 30 includes a display area 80 at a position intermediate the touch panel 30 and a frame area 90 at a periphery of the display area 80. The display area 80 is a light transmissive area for displaying an image. The bezel area 90 is a non-transparent area that is located at the periphery of the display area 80. In this embodiment, the frame area 90 includes a touch area 91 and a routing area 92. The touch area 91 is located between the display area 80 and the line area 92, and the display area 80 and the touch area 91 are operable areas of the touch function of the touch device 1.

Please refer to FIG. 2 , which is a schematic structural view of the side of the touch device 1 . The touch device 1 includes a display panel 10 and a touch panel 30. The touch panel 30 is located on the display surface side of the display panel 10 and is bonded to each other by an optical adhesive. The touch panel 30 directly serves as a cover of the touch device 1 , and an upper surface thereof is used as a touch surface of the touch device 1 . The touch panel 30 covers at least the display area 80 and the touch area 91. In the embodiment, the touch panel 30 is a capacitive touch panel.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of the touch panel 30 in the touch device 1 . The touch panel 30 includes a substrate 31 and an electrode structure formed on the substrate 31. The electrode structure includes a plurality of first sensing series 32, a plurality of second sensing series 33, and a plurality of connecting traces 34. In this embodiment, the plurality of first sensing series 32, the plurality of second sensing series 33, and the plurality of connecting traces 34 are formed on the same surface of the same substrate. Preferably, the surface is the outer surface of the substrate 31. The first sensing series 32 is electrically insulated from the second sensing series 33 and is electrically connected to the connection traces 34. The first sensing series 32 and the second sensing series 33 are used to detect a position generated by a user's touch action. The connection traces 34 are disposed on the edge region of the substrate 31 for connecting the first sensing series 32 and the second sensing series 33 and an external driving circuit (not shown) to the first sensing string. Column 32 and the second sense train 33 provide electrical signals. In order to increase the sensitivity of the touch panel 30, the connection trace 34 is a metal trace. For convenience of description, the connection trace 34 connected to the first sensing series 32 is named as the first connection trace 341, and the connection trace 34 connected to the second sensing series 33 is named as the second connection trace. 342. Specifically, at least one end of each of the first sensing series 32 is electrically connected to a corresponding first connecting trace 341, which is defined as a first connecting end 371. At least one end of each of the second sensing series 33 is electrically connected to a corresponding second connecting trace 342, which is defined as a second connecting end 372. In other embodiments, as shown in FIG. 4, in order to improve the sensitivity of the touch panel 30, the two ends of each of the first sensing series 32 are electrically connected to the corresponding first connection traces 341, respectively. The two ends of the second sensing series 33 are electrically connected to the corresponding second connection traces 342, respectively.

Referring again to FIG. 3, a plurality of first sensing series 32 are disposed in parallel with each other. Each of the first sensing series 32 includes a plurality of first connecting lines 321 and a plurality of first sensing pads 322. The first connecting line 321 and the first sensing pad 322 in the first sensing series 32 are disposed on the substrate 31 and are located in the same plane. The plurality of first connecting lines 321 of each of the first sensing series 32 are parallel to the first direction D1, and the plurality of first sensing pads 322 are serially arranged. In order to make the touch panel 30 have good transparency, the material of the first sensing pad 322 may be selected from a transparent conductive material such as Indium tin oxide (ITO) or indium zinc oxide ( Indium zinc oxide, IZO ).

A plurality of second sensing series 33 are disposed on the substrate 31 and are parallel to each other. Each of the second sensing series 33 includes a plurality of second connecting lines 331 and a plurality of second sensing pads 332. The plurality of second connecting lines 331 of each of the second sensing series 33 are parallel to the second direction D2, and the plurality of second sensing pads 332 are serially arranged. The second sensing pad 332 is located on the same layer as the first sensing pad 322. Similarly, in order to make the touch panel 30 have good transparency, the material of the second sensing pad 332 may be selected from a transparent conductive material such as indium tin oxide or indium zinc oxide. The second connecting line 331 intersects the first connecting line 321 and the second connecting line 331 and the first connecting line 321 are insulated from each other to connect two adjacent second sensing pads 332. In the present embodiment, the first direction D1 is the X-axis direction, and the second direction D2 is the Y-axis direction. The plurality of first sensing pads 322 and the plurality of second sensing pads 332 are distributed in the display area 80 and the touch area 91 such that the two areas have a touch function. If the area of the touch area 91 is small, only one type of sensing pad, such as the first sensing pad 322 or the second sensing pad 332, may be selectively disposed in the touch area 91, as in the structure shown in FIG. The second sensing pad 332 of the touch area 91 located under the touch panel 30; in the structure shown in FIG. 5, the first sensing pad 322 of the touch area 91 located on the right side of the touch panel 30.

A voltage signal is transmitted from the external driving circuit to the corresponding first sensing series 32 and the second sensing series 33 via the first connection trace 341 and the second connection trace 342. When the user touches the touch panel 30 with a finger, the first sensing pad 322 and the second sensing pad 332 respectively form a capacitance with the finger at a position touched by the user, thereby causing the first The change of the signal on the serial array 32 and the second sensing series 33 is sensed. Therefore, by detecting the change of the signal on the first sensing series 32 and the second sensing series 33, the position touched by the user can be located.

Please refer to FIG. 6 , which is a cross-sectional view of the touch panel of FIG. 3 along the line III-III. In the present embodiment, an ink layer 37 is provided on one side of the substrate 31 and is disposed corresponding to the edge region of the substrate 31. The first connecting line 321 and the first sensing pad 322 in the first sensing series 32 are disposed on the substrate 31 and are located on the same plane, and the second sense in the second sensing series 33 The test pad 332 is disposed on the substrate 31 and is located in the same layer as the first sensing series 32. The second connecting line 331 is connected to the two connected second sensing pads 332, and an isolation layer 324 is disposed between the second connecting line 331 and the first connecting line 321 to connect the first connecting line 321 and the first connecting line 321 The two connecting lines 331 are electrically isolated. A plurality of second connection traces 342 are disposed on the substrate 31 corresponding to the ink layer 37 and at least partially disposed between the ink layer 37 and the second sensing pad 332. A first insulating layer 35 is further disposed at a position where the second connection trace 342 overlaps the second sensing pad 332 to isolate the second connection trace 342 at the overlapping position from the second sensing pad 332. To prevent signal interference between the second connection trace 342 and the sense string. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . At this time, the touch area 91 of the touch panel 30 and the line area 92 of the touch panel 30 where the connection trace 34 is disposed partially or completely overlap, so that the frame area of the touch panel 30 is narrower. In addition, the first sensing series 32 and the second sensing series 33 are covered with a protective insulating layer 325 to prevent moisture in the first sensing series 32 and the second sensing series 33. Protection from erosion. In this embodiment, the diameter of the first through hole 351 is smaller than the width of the second connection trace 342. In this case, the first through hole 351 is called a via.

Please refer to FIG. 7 , which is a cross-sectional view of the second embodiment of the touch panel of FIG. 3 along line III-III. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. A plurality of second connection traces 342 are disposed on the other side of the substrate 31 and opposite the ink layer 37, and the ink layer 37 overlaps the plurality of second connection traces 342. The second sensing pad 332 and the first connecting line 321 located in the display area 80 are disposed on a side of the substrate 31 opposite to the ink layer 37 and are located in the same plane. The second connecting line 331 intersects with the first connecting line 321 , and an isolation layer 324 is disposed between the second connecting line 331 and the first connecting line 321 to connect the second connecting line 321 and the second connecting line Electrical isolation between 331. The second sensing pad 332 located in the touch area 91 is disposed on the substrate 31 and at least partially overlaps the plurality of second connection traces 342. A first insulating layer 35 is further disposed at a position where the second connection trace 342 overlaps the second sensing pad 332 to isolate the second connection trace 342 of the overlapping position from the second sensing pad 332. To prevent signal interference between the second connection trace 342 and the sense string. The first insulating layer 35 is provided with a plurality of first through holes 351, and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351. At this time, the touch area 91 of the touch panel 30 and the line area 92 of the touch panel 30 where the connection trace 34 is disposed partially or completely overlap, so that the frame area of the touch panel 30 is narrower. In addition, the first sensing series 32 and the second sensing series 33 are covered with a protective insulating layer 325 to prevent moisture in the first sensing series 32 and the second sensing series 33. Protection from erosion. In the embodiment, the diameter of the first through hole 351 is smaller than the width of the second connection trace 342.

Please refer to FIG. 8 , which is a cross-sectional view of the touch panel of FIG. 3 along the third embodiment of the III-III line. In the present embodiment, an ink layer 37 is provided on one side of the substrate 31 and is disposed corresponding to the edge region of the substrate 31. The second sensing pad 332 and the first connecting line 321 located in the display area 80 are disposed on the substrate 31 and are located in the same plane. The second connecting line 331 is connected to the two connected second sensing pads 332, and an isolation layer 324 is disposed between the second connecting line 331 and the first connecting line 321 to connect the first connecting line 321 and the first connecting line 321 The two connecting lines 331 are isolated. A plurality of second connection traces 342 are disposed on the substrate 31 and at least partially disposed between the ink layer 37 and the second sensing pad 332 disposed on the touch region 91. A first insulating layer 35 is further disposed at a position where the second connection trace 342 overlaps the second sensing pad 332 disposed in the touch area 91 to overlap the second connection trace 342 of the overlapping position with the second The sensing pads 332 are isolated to prevent signal interference between the second connecting traces 342 and the sensing series. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . At this time, the touch area 91 of the touch panel 30 and the line area 92 of the touch panel 30 where the connection trace 34 is disposed partially or completely overlap, so that the frame area of the touch panel 30 is narrower. In addition, the first sensing series 32 and the second sensing series 33 are covered with a protective insulating layer 325 to prevent moisture in the first sensing series 32 and the second sensing series 33. Protection from erosion. In this embodiment, the diameter of the first through hole 351 is greater than or equal to the width of the corresponding second connecting trace 342. In this case, the first through hole 351 is called a bridge. When the diameter of the first through hole 351 is greater than or equal to the width of the first connection trace 341, the contact area of the second sensing pad 332 and the second connection trace 342 is larger, so that the second sensing The electrical contact performance of the pad 332 and the second connection trace 342 is good, and the ability to resist large current between the second sensing pad 332 and the second connection trace 342 is improved.

Please refer to FIG. 9 , which is a cross-sectional view of the touch panel of FIG. 3 along the III-III line of the fourth embodiment. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. A plurality of second connection traces 342 are disposed on the other side of the substrate 31 opposite the ink layer 37, and the ink layer 37 overlaps the plurality of the second connection traces 342. The second sensing pad 332 is disposed on the substrate 31 and at least partially overlaps the plurality of second connection traces 342. A first insulating layer 35 is further disposed at a position where the second connection trace 342 overlaps the second sensing pad 332 to isolate the second connection trace 342 at the overlapping position from the second sensing pad 332. To prevent signal interference between the second connection trace 342 and the sense string. The first insulating layer 35 is provided with a plurality of first through holes 351, and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351. At this time, the touch area 91 of the touch panel 30 and the line area 92 of the touch panel 30 where the connection trace 34 is disposed partially or completely overlap, so that the frame area of the touch panel 30 is narrower. In addition, the first sensing series 32 and the second sensing series 33 are covered with a protective insulating layer 325 to prevent moisture in the first sensing series 32 and the second sensing series 33. Protection from erosion. In the embodiment, the diameter of the first through hole 351 is greater than or equal to the width of the corresponding second connection trace 342.

Please refer to FIG. 10 , which is a cross-sectional view of the touch panel of FIG. 3 along the III-III line of the fifth embodiment. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. The second sensing pad 332 and the first connecting line 321 are disposed on the substrate 31 and are located in the same plane. The second connecting line 331 intersects the first connecting line 321 and the second connecting line 331 and the first connecting line 321 are separated by an isolation layer 324 for connecting two adjacent second sensing pads 332. The second sensing pad 332 at least partially overlaps the ink layer 37. A first insulating layer 35 is disposed on the second sensing pad 332 and covers at least an overlapping portion of the second sensing pad 332 and the ink layer 37. At least a portion of the second connection traces 342 are disposed on the first insulating layer 35. That is, the first insulating layer 35 isolates at least a portion of the plurality of second connection traces 342 from the second sensing pad 332 to prevent signal interference between the second connection trace 342 and the sensing series. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . In addition, a protective insulating layer 325 is disposed on the first sensing series and the second sensing series to prevent protection against moisture erosion and the like by the first sensing series and the second sensing series. In the embodiment, the diameter of the first through hole 351 is smaller than the width of the second connection trace 342.

Please refer to FIG. 11 , which is a cross-sectional view of the touch panel of FIG. 3 along the III-III line of the sixth embodiment. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. The second sensing pad 332 and the first connecting line 321 are disposed on the substrate 31 and are located in the same plane. The second connecting line 331 intersects the first connecting line 321 and the second connecting line 331 and the first connecting line 321 are separated by an isolation layer 324 for connecting two adjacent second sensing pads 332. The second sensing pad 332 at least partially overlaps the ink layer 37. A first insulating layer 35 is disposed on the second sensing pad 332 and covers at least an overlapping portion of the second sensing pad 332 and the ink layer 37. At least a portion of the second connection traces 342 are disposed on the first insulating layer 35. That is, the first insulating layer 35 isolates at least a portion of the plurality of second connection traces 342 from the second sensing pad 332 to prevent signal interference between the second connection trace 342 and the sensing series. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . In addition, a protective insulating layer 325 is disposed on the first sensing series and the second sensing series to prevent protection against moisture erosion and the like by the first sensing series and the second sensing series. In the embodiment, the diameter of the first through hole 351 is greater than or equal to the width of the first connection trace 341.

Please refer to FIG. 12 , which is a cross-sectional view of the touch panel of FIG. 3 along the third embodiment of the III-III line. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. The second sensing pad 332 and the plurality of first connecting lines 321 are disposed on the other side of the substrate 31, and the second sensing pad 332 partially overlaps the ink layer 37. The second connecting line 331 intersects the first connecting line 321 and the second connecting line 331 and the first connecting line 321 are separated by an isolation layer 324 for connecting two adjacent second sensing pads 332. A first insulating layer 35 is disposed on the second sensing pad 332 and disposed corresponding to the overlapping portion of the second sensing pad 332 and the ink layer 37. The plurality of second connection traces 342 are disposed on the first insulating layer 35. That is, the first insulating layer 35 isolates at least a portion of the plurality of second connection traces 342 from the second sensing pad 332 to prevent signal interference between the second connection trace 342 and the sensing series. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . In addition, a protective insulating layer 325 is disposed on the first sensing series and the second sensing series to prevent protection against moisture erosion and the like by the first sensing series and the second sensing series. In the embodiment, the diameter of the first through hole 351 is smaller than the width of the second connection trace 342.

Please refer to FIG. 13 , which is a cross-sectional view of the touch panel of FIG. 3 along the third embodiment of the III-III line. In the present embodiment, the ink layer 37 is provided on one side of the substrate 31 and is disposed in the edge region of the substrate 31. The second sensing pad 332 and the plurality of first connecting lines 321 are disposed on the other side of the substrate 31, and the second sensing pad 332 partially overlaps the ink layer 37. The second connecting line 331 intersects the first connecting line 321 and the second connecting line 331 and the first connecting line 321 are separated by an isolation layer 324 for connecting two adjacent second sensing pads 332. A first insulating layer 35 is disposed on the second sensing pad 332 and disposed corresponding to the overlapping portion of the second sensing pad 332 and the ink layer 37. The plurality of second connection traces 342 are disposed on the first insulating layer 35. That is, the first insulating layer 35 isolates at least a portion of the plurality of second connection traces 342 from the second sensing pad 332 to prevent signal interference between the second connection trace 342 and the sensing series. The first insulating layer 35 is provided with a plurality of first through holes 351 , and the second sensing pads 332 and the second connecting traces 342 are electrically connected through the first through holes 351 . In addition, a protective insulating layer 325 is disposed on the first sensing series and the second sensing series to prevent protection against moisture erosion and the like by the first sensing series and the second sensing series. In the embodiment, the diameter of the first through hole 351 is greater than or equal to the width of the first connection trace 341.

It can be understood that although the present invention is described by taking the second sensing pad 332 of the second sensing series 33 and the second connecting trace 342 as an example, the first sensing pad for the first sensing series 32 is used. 322 and the first connection trace 341 are also suitable for the structures in the above embodiments, and are not described herein again. In addition, the overlap of the first sensing pad 322 and the first connection trace 341 is referred to herein as a first overlap, and the second sensing pad 332 overlaps the second connection trace 342. For convenience of description, referred to herein as a second overlap, the first overlap and the second overlap may be located on different sides of the touch area 91.

It is to be understood that although the present invention is described by taking the touch panel 30 on the display panel 10 as an example, the present invention is not limited to the configuration in which the touch panel 30 is disposed on the display panel 10. The substrate 31 on the touch panel 30 can also be the substrate on the display panel 10, that is, the first sensing series 32, the second sensing series 33, the connecting traces 34, and the like can also be configured. On the substrate in the display panel 10. The substrate in the display panel 10 may be a polarizer in the display panel 10, an upper substrate of the liquid crystal layer in the display panel 10, etc., to omit the substrate 31 of the touch panel 30 itself, so that the touch device 1 It is thinner.

Compared with the prior art, the sensing pads of the touch area 91 of the bezel area 90 in the touch panel 30 of the present invention are at least partially overlapped with the connection traces 34 in the routing area 92, and the sensing pads in the overlapping portions are provided. A first insulating layer 35 is disposed between the connecting traces 34. The first insulating layer 35 is provided with a plurality of first openings 351. The different sensing pads are electrically connected to the corresponding connecting traces 34 through the corresponding first through holes 351. The touch panel 91 and the routing area 92 of the touch panel 30 are partially overlapped, so that the touch panel 30 and the touch panel 1 having the touch panel 30 are narrower.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the scope of the present invention, and various changes can be made by those skilled in the art without departing from the spirit and scope of the invention. Changes are intended to be included within the scope of the claimed invention.

1‧‧‧ touch device

10‧‧‧ display panel

30‧‧‧Touch panel

31‧‧‧Substrate

32‧‧‧First sensing series

33‧‧‧Second sensing series

34‧‧‧Connecting traces

35‧‧‧First insulation

37‧‧‧Ink layer

321‧‧‧First cable

322‧‧‧First sensing pad

325‧‧‧Protective insulation

331‧‧‧second cable

332‧‧‧Second sensing pad

324‧‧‧Isolation

341‧‧‧First connection trace

342‧‧‧Second connection trace

351‧‧‧First through hole

D1‧‧‧ first direction

D2‧‧‧ second direction

80‧‧‧ display area

90‧‧‧Border area

91‧‧‧ touch area

92‧‧‧Drop area

371‧‧‧First connection

372‧‧‧second connection

no

31‧‧‧Substrate

35‧‧‧First insulation

37‧‧‧Ink layer

321‧‧‧First cable

325‧‧‧Protective insulation

331‧‧‧second cable

332‧‧‧Second sensing pad

324‧‧‧Isolation

342‧‧‧Second connection trace

351‧‧‧First through hole

80‧‧‧ display area

91‧‧‧ touch area

92‧‧‧Drop area

Claims (17)

A touch device includes:
The plurality of sensing pads are used to sense the touch operation;
A plurality of connection traces are electrically connected to the corresponding sensing pads for connecting the sensing pads and the driving circuit to provide electrical signals for the sensing pads;
The sensing pad is at least partially overlapped with the connecting trace, and at the overlapping, an insulating layer is disposed between the sensing pad and the connecting trace, the insulating layer is provided with a plurality of through holes, and the sensing pad is connected with the corresponding The traces are electrically connected through the through holes. The touch device of claim 1, wherein the plurality of sensing pads integrally define a touch area, and at least a portion of the sensing pads located at an edge of the touch area are disposed to overlap the connection trace. The touch device of claim 1, wherein the sensing pad disposed overlapping the connection trace is covered with an ink layer. The touch device of claim 1, wherein the plurality of sensing pads are covered with a protective layer. The touch device of claim 1, wherein the plurality of sensing pads comprise a plurality of first sensing pads arranged along a first direction and a plurality of second sensing pads arranged along a second direction, the second sense The test pad cooperates with the first sensing pad for sensing a touch operation; the plurality of connection traces include a plurality of first connection traces and a plurality of second connection traces; the first connection trace is used for connection The first sensing pad and the driving circuit provide an electrical signal for the first sensing pad; the second connecting trace is configured to connect the second sensing pad and the driving circuit to provide an electrical signal for the second sensing pad; The first sensing pad at least partially overlaps the first connection trace, and is disposed between the first sensing pad and the first connection trace at an overlap of the first sensing pad and the first connection trace The first insulating layer is provided with a plurality of first through holes, and the first sensing pad is electrically connected to the corresponding first connecting trace through the first through holes. The touch device of claim 5, wherein the diameter of the first through hole is smaller than the width of the first connection trace. The touch device of claim 5, wherein the diameter of the first through hole is greater than or equal to the width of the first connecting line. The touch device of claim 5, wherein the second sensing pad at least partially overlaps the second connection trace, and at an overlap of the second sensing pad and the second connection trace, a second insulating layer is disposed between the second sensing pad and the second connecting trace, and the second insulating layer is provided with a plurality of second through holes, and the second sensing pad passes through the second through holes and the corresponding first The two connection traces are electrically connected. The touch device of claim 8, wherein the overlap of the first sensing pad with the first connection trace and the overlap of the second sensing pad and the second connection trace are located at the complex sense The test pads are defined by different sides of a touch area. The touch device of claim 8, wherein the diameter of the second through hole is smaller than the width of the second connection trace. The touch device of claim 8, wherein the diameter of the second through hole is greater than or equal to the width of the second connection trace. A touch device includes: a light-transmissive display area and a non-transparent frame area outside the display area, the frame area includes a touch area and a trace area, and the touch area is disposed in the display area and the walk Between the line areas, a plurality of sensing pads are distributed in the display area and the touch area is used for sensing a touch operation, and a plurality of connection traces are located in the routing area, and the plurality of connection traces and corresponding sensing are performed. a pad connection for connecting the sensing pad and the driving circuit to provide an electrical signal for the sensing pad, and at least a portion of the connecting wire electrically connected to the sensing pad extends to the touch area and is stacked with the sensing pad An insulating layer is disposed between the sensing pads and the connection traces, and the insulating layer is provided with a plurality of through holes, and the sensing pads located in the touch area realize the corresponding connection traces in the routing area through the through holes Electrical connection. The touch device of claim 12, wherein the sensing pad disposed overlapping the connection trace is covered with an ink layer. The touch device of claim 12, wherein the connection traces disposed overlapping the sensing pad are covered with an ink layer at the overlap. The touch device of claim 12, wherein the plurality of sensing pads comprise a plurality of first sensing pads arranged in a first direction and a plurality of second sensing pads arranged in a second direction, the second sense The measuring pad cooperates with the first sensing pad for sensing a touch operation, and the plurality of connecting lines comprise a plurality of first connecting traces and a plurality of second connecting traces, wherein the first connecting traces are used for connecting the The first sensing pad and the driving circuit of the touch area provide an electrical signal for the first sensing pad, and the second connecting trace is used for connecting the second sensing pad of the touch area to provide the second sensing pad a first insulating layer is disposed between the first sensing pad in the touch area and the first connecting trace of the routing area, and the first insulating layer is provided with a plurality of first through holes. The first sensing pad in the touch area located at the overlap is electrically connected to the first connection trace corresponding to the routing area through the first through hole. The touch device of claim 15, wherein a second insulating layer is disposed between the second sensing pad located in the touch area and the second connecting trace in the routing area, the second insulating layer A plurality of second through holes are disposed on the second sensing pad in the touch area at the overlap, and the second connecting holes are electrically connected to the corresponding second connecting traces in the routing area. The touch device of claim 15, wherein an overlap between the first sensing pad and the first connection trace and an overlap of the second sensing pad and the second connection trace are located at the complex sense The test pads define different sides of a touch area.