CN214253190U - Touch panel and display device - Google Patents

Abstract

The utility model relates to the technical field of display, and discloses a touch panel and a display device, wherein the touch panel comprises a plurality of touch sensing wires, a plurality of first touch driving wires and a plurality of second touch driving wires; the frame area comprises a first area, a second area, a third area and a fourth area; the fourth region includes a first pad region, a second pad region, and a third pad region; the first pad region is located between the second pad region and the third pad region; the touch sensing wires extend in the fourth area and are electrically connected with the first bonding pads in a one-to-one correspondence manner; the first touch drive wires extend from the first area to the fourth area and are electrically connected with the second bonding pads in a one-to-one correspondence manner; the second touch drive wires extend from the second area to the fourth area and are electrically connected with the third bonding pads in a one-to-one correspondence manner; the minimum distance between the second pad region and the first boundary, and the minimum distance between the third pad region and the second boundary are both less than 12 mm. The utility model discloses can reduce the lower frame of panel.

Description

Touch panel and display device

Technical Field

The embodiment of the utility model provides a relate to and show technical field, especially relate to a touch panel and display device.

Background

With the rapid development of display technologies, touch display technologies are widely used, and a touch display panel combines the touch technologies with the display technologies, so that the panel has the functions of displaying and sensing touch input.

The touch display panel can be classified into an external type, an overlay surface type (Oncell) in which a touch electrode is overlaid on the display panel, and an embedded type (Incell) in which a touch electrode is embedded in the display panel, according to the structural composition. The external hanging type touch panel and the display panel are produced separately and then attached together to form the display panel with the touch function. In the current touch display panel, the touch traces occupy a large space in the frame area of the touch display panel, which results in a wider frame width, especially a larger size of the lower frame, and is contrary to the current narrow frame development trend.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a touch panel and display device to reduce the lower frame of panel.

The embodiment of the utility model provides a touch panel, including touch-control district and the frame district around the touch-control district, touch panel includes many touch-control sensing lines, many first touch-control drive lines and many second touch-control drive lines;

the frame area comprises a first area, a second area, a third area and a fourth area; the first area and the second area are oppositely arranged; the third region and the fourth region are oppositely arranged; the fourth region includes a first pad region, a second pad region, and a third pad region; the first pad area is provided with a plurality of first pads, and the second pad area is provided with a plurality of second pads; the third bonding pad region is provided with a plurality of third bonding pads; the first pad region is located between the second pad region and the third pad region along a direction in which the first region points to the second region;

the touch sensing wires extend in the fourth area and are electrically connected with the first bonding pads in a one-to-one correspondence manner; the plurality of first touch driving wires extend from the first area to the fourth area and are electrically connected with the plurality of second bonding pads in a one-to-one correspondence manner; the second touch drive routing wires extend from the second area to the fourth area and are electrically connected with the third bonding pads in a one-to-one correspondence manner;

the boundary between the first area and the touch area is a first boundary, and the boundary between the second area and the touch area is a second boundary; a minimum distance between the second pad region and the first boundary, and a minimum distance between the third pad region and the second boundary are both less than 12 mm.

Furthermore, the touch area comprises a plurality of rows of first touch electrodes arranged in parallel and a plurality of rows of second touch electrodes arranged in parallel; the first touch electrode and the second touch electrode are crossed in an insulating way; the touch sensing wires are electrically connected with the first touch electrodes in a one-to-one correspondence manner; the first touch driving wires are electrically connected with the first ends of the second touch electrodes in a one-to-one correspondence manner; the second touch driving wires are electrically connected with the second ends of the second touch electrodes in a one-to-one correspondence manner.

Furthermore, the frame area is also provided with a first grounding wire, a second grounding wire, a first grounding pad and a second grounding pad; the first grounding wire is positioned between the adjacent touch sensing wire and the first touch driving wire; the second grounding wire is positioned between the adjacent touch sensing wire and the second touch driving wire; the first ground pad is located in the first pad region or the second pad region; the second ground pad is located in the first pad region or the third pad region; the first grounding wire is electrically connected with the first grounding bonding pad; the second ground line is electrically connected to the second ground pad.

Furthermore, a third ground wire, a fourth ground wire, a third ground pad and a fourth ground pad are further arranged in the frame area; the third grounding wire is positioned on one side, away from the touch area, of the first touch driving wire; the fourth grounding wire is positioned on one side, away from the touch area, of the second touch driving wire; the third ground pad is located in the second pad region; the fourth ground pad is located in the third pad region; the third ground line is electrically connected with the third ground pad; the fourth ground line is electrically connected to the fourth ground pad.

Furthermore, the touch sensing trace, the first touch driving trace and the second touch driving trace in the fourth area all include a first portion and a second portion; the first portion is connected with the second portion; the second portion is parallel to a direction in which the third region points toward the fourth region; at least a portion of the first portion comprises a first fold line segment and a second fold line segment; adjacent first fold segments in the first portion are connected by the second fold segment; the first broken line segment is parallel to the direction in which the first area points to the second area.

Further, the device also comprises a flexible circuit board; the flexible circuit board is respectively bound with the first pad of the first pad area, the second pad of the second pad area and the third pad of the third pad area.

Further, the flexible printed circuit board also comprises a first flexible circuit board, a second flexible circuit board and a third flexible circuit board; the first flexible circuit board is bound with a first bonding pad of the first bonding pad area; the second flexible circuit board is bound with a second pad of the second pad area; the third flexible circuit board is bound with a third pad of the third pad area.

Further, the color filter comprises an array substrate and a color film substrate which are oppositely arranged; the first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the color film substrate.

The touch panel further comprises a display panel and a touch substrate attached to the display panel; the first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the touch substrate.

The embodiment of the utility model provides a display device is still provided, this display device includes as above arbitrary the touch panel.

The embodiment of the utility model provides a touch panel and display device, include the touch-control district and around the frame district in touch-control district. The fourth region of the frame region includes a first pad region, a second pad region, and a third pad region. The first pad region is disposed between the second pad region and the third pad region. A plurality of touch sensing wires of the touch panel extend in the fourth area and are electrically connected with the first bonding pads in a one-to-one correspondence manner. A plurality of first touch driving wires of the touch panel extend from the first area to the fourth area and are electrically connected with the second bonding pads in a one-to-one correspondence mode. A plurality of second touch driving wires of the touch panel extend from the second area to the fourth area and are electrically connected with the third bonding pads in a one-to-one correspondence mode. The embodiment of the utility model provides a through distinguish second pad and third pad and set up the edge about the fourth district, the minimum distance between second pad district and the first boundary, and the minimum distance between third pad district and the second boundary all is less than 12mm, the first district is first boundary with the boundary in touch-control district, the second district is the second boundary with the boundary in touch-control district, so that first touch-control drive is walked line and second touch-control drive is walked the line and is avoided walking the line with touch-control sensing in the middle zone in fourth district densely arranged, thereby can reduce the width in the direction in the directional fourth district in third district.

Drawings

To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it should be apparent that the drawings in the following description are some specific embodiments of the present invention, and it is obvious for a person skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested according to the various embodiments of the present invention can be extended and extended to other structures and drawings, which should undoubtedly be within the scope of the claims of the present invention.

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

fig. 2 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a touch sensing trace according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another touch panel according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the basic concepts disclosed and suggested by the embodiments of the present invention belong to the protection scope of the present invention.

Fig. 1 is a schematic structural view of a touch panel provided in an embodiment of the present invention, as shown in fig. 1, the display panel provided in this embodiment includes a touch area AA and a frame area UAA surrounding the touch area AA. The touch panel further includes a plurality of touch sensing traces RX, a plurality of first touch driving traces TX1, and a plurality of second touch driving traces TX 2. The first touch driving traces TX1 and the second touch driving traces TX2 are used for providing touch driving signals to the touch panel, and the touch sensing traces RX are used for outputting touch detection signals. The plurality of touch sensing traces RX, the plurality of first touch driving traces TX1, and the plurality of second touch driving traces TX2 are all located in the border area UAA. Wherein the border area AA comprises a first area 11, a second area 12, a third area 13 and a fourth area 14. The first zone 11 and the second zone 12 are oppositely disposed. The third zone 13 and the fourth zone 14 are oppositely disposed. The fourth area 14 is a lower frame of the touch panel. The fourth region 14 includes a first pad region 141, a second pad region 142, and a third pad region 143. The first pad region 141 is provided with a plurality of first pads 1411. The second pad region 142 is provided with a plurality of second pads 1421. The third pad region 143 is provided with a plurality of third pads 1431. The first pad region 141 is located between the second pad region 142 and the third pad region 143 in a direction in which the first region 11 is directed to the second region 12. The touch sensing traces RX extend in the fourth area 14 and are electrically connected to the first pads 1411 in a one-to-one correspondence. The first touch driving traces TX1 extend from the first region 11 to the fourth region 14, and are electrically connected to the second pads 1421 in a one-to-one correspondence. The second touch driving traces TX2 extend from the second area 12 to the fourth area 14, and are electrically connected to the third pads 1431 in a one-to-one correspondence. Since the touch sensing trace RX, the first touch driving trace TX1 and the second touch driving trace TX2 all need to extend to the fourth area 14, if the first touch driving trace TX1, the second touch driving trace TX2 and the touch sensing trace RX are densely arranged in the direction in which the third area 13 points to the fourth area 14, the width of the fourth area 14 in the direction in which the third area 13 points to the fourth area 14 is larger, resulting in a larger border of the fourth area 14. Accordingly, the embodiment of the present invention provides the first pad region 141 between the second pad region 142 and the third pad region 143 in a direction along the first region 11 toward the second region 12. The second pad area 142 and the third pad area 143 are disposed at the left and right edges of the fourth area as much as possible, as shown in fig. 1, the boundary between the first area 11 and the touch area AA is a first boundary L1, and the boundary between the second area 12 and the touch area AA is a second boundary L2. The embodiment of the utility model provides a set up the minimum distance S1 between second pad district 142 and the first boundary L1 to and the minimum distance S2 between third pad district 143 and the second boundary L2 all is less than 12 mm. This arrangement allows the first touch driving trace TX1 to be arranged at the left edge of the fourth area 14, the second touch driving trace TX2 to be arranged at the right edge of the fourth area 14, and the touch sensing trace RX to be arranged at the middle area of the fourth area 14. Therefore, the first touch driving trace TX1, the second touch driving trace TX2 and the touch sensing trace RX can be reduced from being densely arranged in the middle area of the fourth area 14. As shown in fig. 1, in a direction pointing to the fourth area 14 from the third area 13, only a small number of touch sensing traces RX are overlapped with the first touch driving traces TX1 in an edge area of the fourth area 14, and a small number of touch sensing traces RX are overlapped with the second touch driving traces TX 2. Compare in prior art most part quantity touch-control sensing line RX and first touch-control drive line TX1 and second touch-control drive line TX2 overlap in fourth district 14, the embodiment of the utility model provides a can show and reduce fourth district 14 at the ascending width in the direction of following third district 13 and pointing to fourth district 14, and then can reduce touch panel's lower frame width.

On the basis of the above embodiments, as shown in fig. 2, a touch area of a touch panel provided by the embodiments of the present invention includes a plurality of rows of parallel first touch electrodes P1 and a plurality of rows of parallel second touch electrodes P2. The first touch electrode P1 and the second touch electrode P2 are insulated and crossed. The plurality of touch sensing traces RX are electrically connected to the plurality of rows of first touch electrodes P1 in a one-to-one correspondence manner. The first touch driving traces TX1 are electrically connected to the first ends of the second touch electrodes P2 in a one-to-one correspondence, and the second touch driving traces TX2 are electrically connected to the second ends of the second touch electrodes P2 in a one-to-one correspondence. In this embodiment, the plurality of first touch driving traces TX1 are electrically connected to the first ends of the plurality of rows of second touch electrodes P2 in a one-to-one correspondence manner, and the plurality of second touch driving traces TX2 are electrically connected to the second ends of the plurality of rows of second touch electrodes P2 in a one-to-one correspondence manner, that is, in a two-sided driving manner, the two ends of the second touch electrode P2 are respectively provided with touch driving signals through the first touch driving trace TX1 and the second touch driving trace TX2, so that the voltage of the touch driving signals on the second touch electrode P2 can be uniform, and the large-size touch panel can be prevented from having a large voltage difference between the touch driving signals on the two ends of the second touch electrode P2.

On the basis of the above embodiments, in this embodiment, optionally, a first ground line, a second ground line, a first ground pad, and a second ground pad may be further disposed in the frame region. For example, as shown in fig. 3, the frame area UAA may further be provided with a first ground line GND1, a second ground line GND2, a first ground pad G1, and a second ground pad G2. The first ground line GND1 is located between the adjacent touch sensing trace RX and the first touch driving trace TX 1. The second ground line GND2 is located between the adjacent touch sensing trace RX and the second touch driving trace TX 2. The first ground pad G1 is located at the first pad region 141 or the second pad region 142. The second ground pad G2 is located at the first pad region 141 or the third pad region 143. The first ground line GND1 is electrically connected to the first ground pad G1, and the second ground line GND2 is electrically connected to the second ground pad G2.

In the embodiment, the first ground line GND1 is disposed between the adjacent touch sensing trace RX and the first touch driving trace TX1, and the second ground line GND2 is disposed between the adjacent touch sensing trace RX and the second touch driving trace TX2, so that signal interference between the touch sensing trace RX and the first touch driving trace TX1 and between the touch sensing trace RX and the second touch driving trace TX2 can be avoided. Fig. 3 illustrates that the first ground pad G1 and the second ground pad G2 are both disposed in the first pad region 141, and in other embodiments, the first ground pad G1 may be selectively located in the first pad region 141 or the second pad region 142, and the second ground pad G2 may be selectively located in the first pad region 141 or the third pad region 143, according to actual situations.

On the basis of the above embodiment, optionally, the frame region is further provided with a third ground line, a fourth ground line, a third ground pad, and a fourth ground pad. With continued reference to fig. 3, the frame area UAA is also provided with a third ground line GND3, a fourth ground line GND4, a third ground pad G3, and a fourth ground pad G4. The third ground line GND3 is located on a side of the first touch driving trace TX1 away from the touch area AA. The fourth ground line GND4 is located on a side of the second touch driving trace TX2 away from the touch area AA. The third ground pad G3 is located at the second pad region 142. The fourth ground pad G4 is located at the third pad region 143. The third ground line GND3 is electrically connected to the third ground pad G3, and the fourth ground line GND4 is electrically connected to the fourth ground pad G4. In this embodiment, the third ground line GND3 is disposed on a side of the first touch driving trace TX1 away from the touch area AA, and the fourth ground line GND4 is disposed on a side of the second touch driving trace TX2 away from the touch area AA, so that the touch result is prevented from being affected by static electricity generated during the manufacturing, transporting and using processes.

Based on the above embodiments, optionally, the touch sensing trace RX, the first touch driving trace TX1 and the second touch driving trace TX2 located in the fourth area 14 all include a first portion a1 and a second portion a 2. For example, referring to fig. 4, two touch sensing traces RX are taken as an example for description. As shown in fig. 3 and 4, the first portion a1 is connected to the second portion a 1. The second portion a2 points parallel to the third zone 13 in the direction of the fourth zone 14. At least a portion of the first portion a1 includes a first fold line segment a11 and a second fold line segment a 12. Adjacent first fold line segments a11 in the first portion a1 are connected by a second fold line segment a 12. The first broken line segment a11 points parallel to the direction in which the first area 11 points towards the second area 12. In the embodiment, the touch sensing trace RX, the first touch driving trace TX1 and the second touch driving trace TX2 in the fourth area 14 are not straight lines, but are divided into a first portion a1 and a second portion a2, wherein adjacent first fold line segments a11 in the first portion a1 are connected by a second fold line segment a12, the first fold line segment a11 being parallel to the direction in which the first region 11 points in the second region 12, and, at the same time, since the minimum distance S1 between the second pad region 142 and the first boundary L1, and the minimum distance S2 between the third pad region 143 and the second boundary L2 are both less than 12mm, in the edge area of the fourth area 14, a smaller number of touch sensing traces RX overlap the first touch driving traces TX1, a smaller number of touch sensing traces RX overlap the second touch driving traces TX2, this arrangement can further reduce the width of the fourth region 14 in a direction pointing along the third region 13 toward the fourth region 14.

On the basis of each embodiment, the embodiment of the utility model provides a touch panel can also include flexible circuit board. For example, referring to fig. 5, the flexible circuit board 20 is respectively bound with the first pad of the first pad region, the second pad of the second pad region, and the third pad of the third pad region. In this embodiment, a flexible circuit board is respectively bonded to the first pad of the first pad region, the second pad of the second pad region, and the third pad of the third pad region.

In other embodiments, a first flexible circuit board, a second flexible circuit board, and a third flexible circuit board may also be provided. For example, as shown in fig. 6, a touch panel provided by an embodiment of the present invention includes a first flexible circuit board 21, a second flexible circuit board 22, and a third flexible circuit board 23. The first flexible circuit board 21 is bonded with the first pad of the first pad region. The second flexible circuit board 22 is bonded with the second pad of the second pad region. The third flexible circuit board 23 is bound with the third pad of the third pad region.

The embodiment of the utility model provides a touch panel can include the array substrate and the various membrane base plate of relative setting. The first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the color film substrate. That is, the touch structure of the touch panel in this embodiment is embedded in the color film substrate.

In other embodiments, the touch panel may be a plug-in type. For example, a touch panel includes a display panel and a touch substrate attached to the display panel. The first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the touch substrate. Namely, the touch substrate is hung on the display panel.

The embodiment of the utility model provides a still provide a display device, fig. 7 is the utility model provides a display device's schematic diagram, as shown in fig. 7, the embodiment of the utility model provides a display device includes as above arbitrary touch panel 100. Since the display device employs the touch panel 100, the display device also has the beneficial effects of the touch panel in any of the embodiments.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A touch panel comprises a touch area and a frame area surrounding the touch area, and is characterized in that the touch panel comprises a plurality of touch sensing wires, a plurality of first touch driving wires and a plurality of second touch driving wires;

the frame area comprises a first area, a second area, a third area and a fourth area; the first area and the second area are oppositely arranged; the third region and the fourth region are oppositely arranged; the fourth region includes a first pad region, a second pad region, and a third pad region; the first pad area is provided with a plurality of first pads, and the second pad area is provided with a plurality of second pads; the third bonding pad region is provided with a plurality of third bonding pads; the first pad region is located between the second pad region and the third pad region along a direction in which the first region points to the second region;

the touch sensing wires extend in the fourth area and are electrically connected with the first bonding pads in a one-to-one correspondence manner; the plurality of first touch driving wires extend from the first area to the fourth area and are electrically connected with the plurality of second bonding pads in a one-to-one correspondence manner; the second touch drive routing wires extend from the second area to the fourth area and are electrically connected with the third bonding pads in a one-to-one correspondence manner;

the boundary between the first area and the touch area is a first boundary, and the boundary between the second area and the touch area is a second boundary; a minimum distance between the second pad region and the first boundary, and a minimum distance between the third pad region and the second boundary are both less than 12 mm.

2. The touch panel of claim 1, wherein the touch area comprises a plurality of rows of first touch electrodes arranged in parallel and a plurality of rows of second touch electrodes arranged in parallel; the first touch electrode and the second touch electrode are crossed in an insulating way; the touch sensing wires are electrically connected with the first touch electrodes in a one-to-one correspondence manner; the first touch driving wires are electrically connected with the first ends of the second touch electrodes in a one-to-one correspondence manner; the second touch driving wires are electrically connected with the second ends of the second touch electrodes in a one-to-one correspondence manner.

3. The touch panel of claim 1, wherein the frame area is further provided with a first ground line, a second ground line, a first ground pad, and a second ground pad; the first grounding wire is positioned between the adjacent touch sensing wire and the first touch driving wire; the second grounding wire is positioned between the adjacent touch sensing wire and the second touch driving wire; the first ground pad is located in the first pad region or the second pad region; the second ground pad is located in the first pad region or the third pad region; the first grounding wire is electrically connected with the first grounding bonding pad; the second ground line is electrically connected to the second ground pad.

4. The touch panel of claim 1, wherein the frame area is further provided with a third ground line, a fourth ground line, a third ground pad, and a fourth ground pad; the third grounding wire is positioned on one side, away from the touch area, of the first touch driving wire; the fourth grounding wire is positioned on one side, away from the touch area, of the second touch driving wire; the third ground pad is located in the second pad region; the fourth ground pad is located in the third pad region; the third ground line is electrically connected with the third ground pad; the fourth ground line is electrically connected to the fourth ground pad.

5. The touch panel of claim 1, wherein the touch sensing trace, the first touch driving trace and the second touch driving trace in the fourth area each include a first portion and a second portion; the first portion is connected with the second portion; the second portion is parallel to a direction in which the third region points toward the fourth region; at least a portion of the first portion comprises a first fold line segment and a second fold line segment; adjacent first fold segments in the first portion are connected by the second fold segment; the first broken line segment is parallel to the direction in which the first area points to the second area.

6. The touch panel of claim 1, further comprising a flexible circuit board; the flexible circuit board is respectively bound with the first pad of the first pad area, the second pad of the second pad area and the third pad of the third pad area.

7. The touch panel of claim 1, further comprising a first flexible circuit board, a second flexible circuit board, and a third flexible circuit board; the first flexible circuit board is bound with a first bonding pad of the first bonding pad area; the second flexible circuit board is bound with a second pad of the second pad area; the third flexible circuit board is bound with a third pad of the third pad area.

8. The touch panel of claim 1, comprising an array substrate and a color film substrate which are arranged oppositely; the first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the color film substrate.

9. The touch panel of claim 1, comprising a display panel and a touch substrate attached to the display panel; the first bonding pad, the second bonding pad, the third bonding pad, the touch sensing trace, the first touch driving trace and the second touch driving trace are all located on the touch substrate.

10. A display device comprising the touch panel according to any one of claims 1 to 9.

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