# US 11,307,724 B2 · Touch substrate, display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,724 B2 - Document ID: US11307724B2 - Status: Granted - Kind: B2 - Application number: 17/015,980 - Filed: 2020-09-09 - Published: 2021-03-11 - Granted: 2022-04-19 - Earliest claimed: 2019-09-10 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Fan He; Kemeng Tong; Xiangdan Dong; Zhengwei Luo - Web page: https://patentgrep.com/patent/US11307724B2 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch substrate includes a base and a touch structure disposed on the base. The base has at least one bending region, and a portion of the base located in each bending region is bendable. The touch structure includes a plurality of touch electrodes and a plurality of touch electrode wires electrically connected to the plurality of touch electrodes. At least one touch electrode wire includes a first portion located in one of the at least one bending region, and at least one first through hole is disposed in the first portion. ## Claims ### Claim 1 A touch substrate, comprising: a base having at least one bending region, a portion of the base located in each bending region being bendable; and a touch structure disposed on the base, the touch structure including a plurality of touch electrodes and a plurality of touch electrode wires electrically connected to the plurality of touch electrodes, wherein at least one touch electrode wire includes a first portion located in one of the at least one bending region, and at least one first through hole is disposed in the first portion; and a plurality of auxiliary wires, wherein each touch electrode wire is electrically connected to a corresponding auxiliary wire, and an orthographic projection of the touch electrode wire on the base at least partially overlaps with an orthographic projection of the corresponding auxiliary wire on the base; an auxiliary wire electrically connected to the touch electrode wire including the first portion includes a second portion located in the one of the at least one bending region, and at least one second through hole is provided in the second portion; and in the auxiliary wire and the touch electrode wire electrically connected to the auxiliary wire, an orthographic projection of each first through hole on the base at least partially overlaps with an orthographic projection of a corresponding second through hole on the base. ### Claim 2 (depends on 1) The touch substrate according to claim 1, wherein a first portion in the at least one touch electrode wire is a first zigzag-shaped line segment. ### Claim 3 (depends on 1) The touch substrate according to claim 1, wherein the first portion of the touch electrode wire is a first zigzag-shaped line segment, and the second portion of the auxiliary wire is a second zigzag-shaped line segment. ### Claim 4 (depends on 1) The touch substrate according to claim 1, further comprising an insulating layer disposed between the plurality of touch electrode wires and the plurality of auxiliary wires, wherein a plurality of third through holes are disposed in the insulating layer; and the touch electrode wire is electrically connected to a corresponding auxiliary wire through at least one third through hole. ### Claim 5 (depends on 4) The touch substrate according to claim 4, wherein at least one third through hole of the plurality of third through holes is located in the one of the at least one bending region, and the at least one third through hole is a strip-shaped through hole extending along an extending direction of the touch electrode wire. ### Claim 6 (depends on 5) The touch substrate according to claim 5, wherein each side of each of the at least one third through hole extending along the extending direction of the touch electrode wire is parallel to both a corresponding side of a corresponding auxiliary wire extending along the extending direction of the touch electrode wire and a corresponding side of a corresponding touch electrode wire extending along the extending direction of the touch electrode wire. ### Claim 7 (depends on 4) The touch substrate according to claim 4, wherein the base further has a touch region and a wiring region, and the wiring region is disposed on a periphery of the touch region; the plurality of touch electrodes are disposed in the touch region, and the plurality of touch electrode wires and the plurality of auxiliary wires are disposed in the wiring region; the bending region and the wiring region have an overlapping region; and a plurality of fifth through holes are disposed in the insulating layer, and the plurality of fifth through holes are disposed in the overlapping region; and orthographic projections of the plurality of fifth through holes on the base do not overlap with both orthographic projections of the plurality of touch electrode wires on the base and orthographic projections of the plurality of auxiliary wires on the base. ### Claim 8 (depends on 1) The touch substrate according to claim 1, wherein the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are arranged crosswise and insulated from each other; and the plurality of touch electrode wires include a plurality of first touch electrode wires and a plurality of second touch electrode wires that are insulated from each other; and each first touch electrode is electrically connected to at least one first touch electrode wire, and each second touch electrode is electrically connected to at least one second touch electrode wire. ### Claim 9 (depends on 8) The touch substrate according to claim 8, wherein each first touch electrode includes a plurality of first touch sub-electrodes and a plurality of bridge portions, and any two adjacent first touch sub-electrodes in the first touch electrode are electrically connected through a bridge portion; and the plurality of first touch sub-electrodes are disposed in a same layer as the plurality of second touch electrodes; and the plurality of auxiliary wires are disposed in a same layer as the plurality of bridge portions. ### Claim 10 (depends on 9) The touch substrate according to claim 9, wherein each second touch electrode includes a plurality of second touch sub-electrodes and a plurality of connecting portions, and any two adjacent second touch sub-electrodes in the second touch electrode are electrically connected through a connecting portion; and the plurality of second touch sub-electrodes and the plurality of connecting portions are disposed in a same layer and are of an integrated structure. ### Claim 11 (depends on 10) The touch substrate according to claim 10, wherein each of all the plurality of first touch sub-electrodes and the plurality of second touch sub-electrodes has a mesh structure. ### Claim 12 (depends on 10) The touch substrate according to claim 10, wherein the plurality of first touch sub-electrodes and the plurality of second touch electrodes are made of a same metal material or different metal materials. ### Claim 13 (depends on 12) The touch substrate according to claim 12, wherein the plurality of first touch sub-electrodes, the plurality of second touch electrodes, the plurality of first touch electrode wires and the plurality of second touch electrode wires are disposed in a same layer. ### Claim 14 (depends on 1) A display panel, comprising the touch substrate according to claim 1. ### Claim 15 (depends on 14) The display panel according to claim 14, further comprising: a display layer disposed on the base, the display layer having a first display region, the first display region including a plurality of first sub-pixel regions, and each first sub-pixel region including a first light-emitting region; and an encapsulation layer disposed on a side of the display layer away from the base, the touch structure being disposed on a side of the encapsulation layer away from the base; and an orthographic projection of the touch structure on the base not overlapping with orthographic projections of all first light-emitting regions on the base. ### Claim 16 (depends on 14) A display device, comprising the display panel according to claim 14. ### Claim 17 (depends on 1) A display device, comprising a display panel, the touch substrate according to claim 1 and an adhesive layer, the touch substrate is fixed to a light-emitting surface of the display panel through the adhesive layer, and the touch structure being disposed between the base of the touch substrate and the display panel. ### Claim 18 (depends on 17) The display device according to claim 17, wherein the display panel has a second display region, the second display region includes a plurality of second sub-pixel regions, and each second sub-pixel region includes a second light-emitting region; and an orthographic projection of the touch structure on the display panel does not overlap with all second light-emitting regions.