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CN-117063144-B - Touch structure, touch display panel and display device

CN117063144BCN 117063144 BCN117063144 BCN 117063144BCN-117063144-B

Abstract

A touch structure, a touch display panel and a display device are provided. The touch structure comprises a first touch electrode (Tx) and a second touch electrode (Rx), wherein the first touch electrode (Tx) comprises a first electrode block (Txc) and a switching Bridge (BR) connected with the first electrode block (Txc), the second touch electrode (Rx) comprises a second electrode block (Rxc) which is connected IN series, an insulating layer (IN) is arranged between the switching Bridge (BR) and an electrode layer (PL), the first touch electrode (Tx) and the second touch electrode (Rx) are of a network structure formed by a plurality of grid lines, the grid lines of the switching Bridge (BR) are switching lines (BL), the grid lines of the first electrode block (Txc) and the second electrode block (Rxc) are channel lines (TL), at least one side of the switching Bridge (BR) is connected with a Guide Part (GP), at least one channel line (TL) of the boundary of one of the first electrode block (Txc) and the second touch electrode (Rx) is overlapped, the partial patch cord (BL) overlaps with a partial channel line (TL) of the boundary of at least one of the first electrode block (Tx) and the second touch electrode (Rx), the patch cord (BL) connected with the Guide Part (GP) overlaps with a partial channel line (TL) of the boundary of one of the first electrode block (Txc) and the second touch electrode (Rx), and at least a partial edge of the front projection of the Guide Part (GP) on the display substrate (PNL) is positioned outside the front projection edge of the channel line (TL) on the display substrate (PNL).

Inventors

  • ZHANG YUANQI
  • ZHANG YI
  • LUO CHANG
  • ZHANG SHUN
  • CHEN TIANCI

Assignees

  • 京东方科技集团股份有限公司
  • 成都京东方光电科技有限公司

Dates

Publication Date
20260508
Application Date
20220126

Claims (18)

  1. 1. The touch structure is arranged on one side of a display substrate, and comprises a plurality of first touch electrodes and a plurality of second touch electrodes, wherein each first touch electrode is distributed at intervals along the row direction, one first touch electrode comprises a plurality of first electrode blocks distributed at intervals along the column direction and a transfer bridge connecting two adjacent first electrode blocks, each second touch electrode is distributed at intervals along the column direction, one second touch electrode comprises a plurality of second electrode blocks connected in series along the row direction, one transfer bridge is arranged across one second touch electrode, the first electrode blocks and the second electrodes are positioned on the same electrode layer, the transfer bridge is positioned on one side of the electrode layer, and an insulating layer is arranged between the transfer bridge and the electrode layer; The first touch electrode and the second touch electrode are both net structures formed by a plurality of grid lines, the grid lines of the switching bridge are switching lines, and the grid lines of the first electrode block and the second electrode block are channel lines; in the transfer bridge and the first electrode block and the crossed second touch electrode connected with the transfer bridge, the guide part is overlapped with at least one channel line of the boundary of one of the first electrode block and the second touch electrode, and part of the transfer line is overlapped with part of the channel line of the boundary of at least one of the first electrode block and the second touch electrode; In the overlapped guide part and channel line, the extension direction of the guide part and the channel line are the same, and at least part of the edge of the orthographic projection of the guide part on the display substrate is positioned outside the edge of the orthographic projection of the channel line on the display substrate.
  2. 2. The touch structure according to claim 1, wherein the number of the channel lines overlapping the guide portion is plural, the guide portion includes a plurality of guide lines sequentially connected in a direction away from the transit bridge along an extending direction of the corresponding channel line, and one guide line overlaps one channel line.
  3. 3. The touch structure of claim 2, wherein one of the guide lines of the guide portion that is farthest from the transit bridge overlaps a portion of a channel line that is discontinuous in two.
  4. 4. The touch structure according to claim 1, wherein one of the guide lines of the guide portion, which is farthest from the transfer bridge, overlaps a portion of a channel line that is interrupted in two, one portion of the channel line being attributed to the first touch electrode and the other portion being attributed to the second touch electrode.
  5. 5. The touch structure of claim 1 or 2, wherein in one of the switching bridges and one of the first electrode blocks connected thereto: The switching bridge is connected with the first electrode block through a plurality of through holes penetrating through the insulating layer; The region where the channel lines of the first electrode block meet is a channel intersection region, the region where the patch lines meet is a switching intersection region, the boundary of the first electrode block is provided with a plurality of channel intersection regions, and the channel intersection regions of the boundary of the first electrode block and at least a part of the switching intersection regions are overlapped in a one-to-one correspondence manner; In the overlapping transition intersection region and channel intersection region on the boundary of the first electrode block, the boundary of the orthographic projection of the transition intersection region on the display substrate is located outside the boundary of the orthographic projection of the channel intersection region on the display substrate.
  6. 6. The touch structure of claim 5, wherein the mesh structure has a plurality of meshes, the meshes of the electrode layer being surrounded by a plurality of the channel lines, one of the channel intersection regions forming an apex of the mesh; In one of the transfer bridges and one of the first electrode blocks to which it is connected: the number of the through holes is a plurality, and the through holes are respectively positioned in a plurality of channel intersection areas of the same mesh; the transfer junction region where at least one of the via holes located at the boundary of the first electrode block is connected with one end of the guide part connected with the transfer bridge.
  7. 7. The touch structure according to claim 6, wherein, in a first electrode block and a crossed second touch electrode connected to the bridge, two sides of the bridge are connected with guide parts overlapping with the boundary of the first electrode block, and two guide parts overlapping with the boundary of the first electrode block are connected by at least one patch cord, the boundary of the first electrode block is connected by at least one channel cord in a region corresponding to between the two guide parts, and the channel cord overlaps with the patch cord between the two guide parts; In the overlapped patch cord and channel cord, the extending direction of the patch cord and the extending direction of the channel cord are the same, and the edge of the orthographic projection of the patch cord on the display substrate is located outside the edge of the orthographic projection of the channel cord on the display substrate.
  8. 8. The touch structure according to claim 6, wherein, in one of the bridge and a first electrode block and a crossing second touch electrode connected thereto, two sides of the bridge are connected with guide portions overlapping with the boundary of the first electrode block, and two guide portions overlapping with the boundary of the first electrode block are connected by at least one patch cord, and the boundary of the first electrode block is intermittently disposed in a region corresponding to between the two guide portions.
  9. 9. The touch structure according to claim 7 or 8, wherein, in a first electrode block and a crossed second touch electrode connected to the bridge, part of the patch cords overlap with the boundary of the second touch electrode, and the patch cords overlapping with the channel lines of the boundary of the second touch electrode are sequentially connected along the extending direction of the boundary of the second touch electrode; In the overlapped patch cord and channel cord, the extending direction of the patch cord and the extending direction of the channel cord are the same, and the edge of the orthographic projection of the patch cord on the display substrate is located outside the edge of the orthographic projection of the channel cord on the display substrate.
  10. 10. The touch structure of claim 7, wherein the orthographic projection of the boundary of the second touch electrode on the display substrate is interrupted at two sides of the orthographic projection of the bridge on the display substrate.
  11. 11. The touch structure of claim 10, wherein a front projection of a partial region of a boundary of the second touch electrode on the display substrate is located within a boundary of a front projection of the bridge on the display substrate.
  12. 12. The touch structure of claim 1, wherein, in the overlapping patch cord and channel cord, a distance between an edge of the front projection of the patch cord on the display substrate and an edge of the front projection of the channel cord on the display substrate is 0.9 μm-1.5 μm.
  13. 13. The touch structure of claim 1, wherein, in the overlapping guide and channel line, an edge of the orthographic projection of the guide on the display substrate is spaced from an edge of the orthographic projection of the channel line on the display substrate by 0.9-1.5 μm.
  14. 14. The touch structure of claim 4, wherein, in the overlapping transition intersection region and channel intersection region, an edge of the forward projection of the transition intersection region on the display substrate is 0.9 μιη -1.5 μιη from an edge of the forward projection of the channel intersection region on the display substrate.
  15. 15. The touch structure is arranged on one side of a display substrate, and comprises a plurality of first touch electrodes and a plurality of second touch electrodes, wherein each first touch electrode is distributed at intervals along the row direction, one first touch electrode comprises a plurality of first electrode blocks distributed at intervals along the column direction and a transfer bridge connecting two adjacent first electrode blocks, each second touch electrode is distributed at intervals along the column direction, one second touch electrode comprises a plurality of second electrode blocks connected in series along the row direction, one transfer bridge is arranged across one second touch electrode, the first electrode blocks and the second electrodes are positioned on the same electrode layer, the transfer bridge is positioned on one side of the electrode layer, and an insulating layer is arranged between the transfer bridge and the electrode layer; The first touch electrode and the second touch electrode are both net structures formed by a plurality of grid lines, the grid lines of the switching bridge are switching lines, and the grid lines of the first electrode block and the second electrode block are channel lines; In the switching bridge and the first electrode block and the crossed second touch electrode connected with the switching bridge, part of the switching wire is overlapped with part of channel wires at the boundary of at least one of the first electrode block and the second touch electrode; In the overlapped patch cord and channel cord, the extension directions of the patch cord and the channel cord are the same, and the edge of the orthographic projection of the patch cord on the display substrate coincides with the edge of the orthographic projection of the channel cord on the display substrate; the orthographic projection of the boundary of the second touch electrode on the display substrate is interrupted at two sides of the orthographic projection of the switching bridge on the display substrate.
  16. 16. The touch structure of claim 15, wherein a front projection of a partial region of a boundary of the second touch electrode on the display substrate is located within a boundary of a front projection of the bridge on the display substrate.
  17. 17. A touch display panel, comprising: A display substrate; The touch structure of any one of claims 1-16, wherein the bridge is disposed on a side of the display substrate, the insulating layer covers the bridge, and the electrode layer is disposed on a surface of the insulating layer facing away from the display substrate.
  18. 18. A display device comprising the touch display panel of claim 17.

Description

Touch structure, touch display panel and display device Technical Field The disclosure relates to the technical field of touch control, in particular to a touch control structure, a touch control display panel and a display device. Background The touch display panel is widely applied to terminal equipment such as mobile phones and tablet computers, and man-machine interaction can be realized through touch operation while images are displayed. The mutual capacitance type touch display panel is common, the touch position is determined through the change of the sensing capacitance, and the touch operation is realized, but the conventional mutual capacitance type touch display panel is easy to have abnormal phenomena such as touch failure, error and the like. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of Invention According to one aspect of the disclosure, a touch structure is provided and is arranged at one side of a display substrate, the touch structure comprises a plurality of first touch electrodes and a plurality of second touch electrodes, each first touch electrode is distributed at intervals along a row direction, one first touch electrode comprises a plurality of first electrode blocks distributed at intervals along a column direction and a transfer bridge connecting two adjacent first electrode blocks, each second touch electrode is distributed at intervals along the column direction, one second touch electrode comprises a plurality of second electrode blocks connected in series along the row direction, one transfer bridge is arranged across one second touch electrode, the first electrode blocks and the second electrodes are positioned at the same electrode layer, the transfer bridge is positioned at one side of the electrode layer, and an insulating layer is arranged between the transfer bridge and the electrode layer; The first touch electrode and the second touch electrode are both net structures formed by a plurality of grid lines, the grid lines of the switching bridge are switching lines, and the grid lines of the first electrode block and the second electrode block are channel lines; in the transfer bridge and the first electrode block and the crossed second touch electrode connected with the transfer bridge, the guide part is overlapped with at least one channel line of the boundary of one of the first electrode block and the second touch electrode, and part of the transfer line is overlapped with part of the channel line of the boundary of at least one of the first electrode block and the second touch electrode; In the overlapped guide part and channel line, the extension direction of the guide part and the channel line are the same, and at least part of the edge of the orthographic projection of the guide part on the display substrate is positioned outside the edge of the orthographic projection of the channel line on the display substrate. In one exemplary embodiment of the present disclosure, the guide part includes a plurality of guide lines sequentially connected in a direction away from the transfer bridge along an extending direction of the corresponding channel line, one of the guide lines overlapping with one of the channel lines. In one exemplary embodiment of the present disclosure, one of the guide wires of the guide portion, which is farthest from the transit bridge, overlaps a portion of a channel line that is interrupted in two. In an exemplary embodiment of the present disclosure, one of the guide lines of the guide portion, which is farthest from the transfer bridge, overlaps a portion of a channel line that is interrupted in two, one portion of the channel line being attributed to the first touch electrode and the other portion being attributed to the second touch electrode. In one exemplary embodiment of the present disclosure, in one of the transfer bridges and one of the first electrode blocks to which it is connected: The switching bridge is connected with the first electrode block through a plurality of through holes penetrating through the insulating layer; The region where the channel lines of the first electrode block meet is a channel intersection region, the region where the patch lines meet is a switching intersection region, the boundary of the first electrode block is provided with a plurality of channel intersection regions, and the channel intersection regions of the boundary of the first electrode block and at least a part of the switching intersection regions are overlapped in a one-to-one correspondence manner; In the overlapping transition intersection region and channel intersection region on the boundary of the first electrode block, the boundary of the orthographic projection of the transition intersection region