# US 12,223,150 B2 · Touch panel, preparation method therefor, 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 12,223,150 B2 - Document ID: US12223150B2 - Status: Granted - Kind: B2 - Application number: 18/447,284 - Filed: 2023-08-09 - Published: 2023-12-07 - Granted: 2025-02-11 - Earliest claimed: 2020-05-29 - Assignees: Boe Technology Group Co., Ltd. - Applicants: BOE Technology Group Co., Ltd. - Inventors: Dalin Xiang; Zewen Bo - Web page: https://patentgrep.com/patent/US12223150B2 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality} - 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 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch panel, a preparation method therefor, and a display device. The touch panel comprises a substrate, a plurality of spaced apart first touch electrodes and a plurality of spaced apart second touch electrodes that are arranged on the same layer on the substrate. The first touch electrodes and the second touch electrodes are insulated from each other. The substrate is also provided with a plurality of grooves, and the orthographic projection of the first touch electrodes and the second touch electrodes on the substrate do not overlap with the orthographic projection of the grooves in the substrate. ## Claims ### Claim 1 A touch panel, comprising a substrate, a plurality of first touch electrodes provided at intervals and a plurality of second touch electrodes provided at intervals on a same layer on the substrate, wherein the first touch electrodes and the second touch electrodes are insulated from each other, and a plurality of grooves are further provided on the substrate, and an orthographic projection of the first touch electrodes and the second touch electrodes on the substrate does not overlap with an orthographic projection of the grooves on the substrate; and the touch panel further comprises an encapsulation layer and a buffer layer, and the encapsulation layer and a second buffer layer are filled in the grooves. ### Claim 2 (depends on 1) The touch panel according to claim 1, further comprising a protective layer covering the first touch electrodes and the second touch electrodes, and the protective layer is filled in the grooves. ### Claim 3 (depends on 1) The touch panel according to claim 1, wherein both the first touch electrodes and the second touch electrodes are in a grid structure. ### Claim 4 (depends on 3) The touch panel according to claim 3, further comprising a plurality of sub-pixels provided on the substrate, and the grid structure is provided on the sub-pixels. ### Claim 5 (depends on 4) The touch panel according to claim 4, wherein in the grid structure, each grid corresponds to one or one group of sub-pixels, and a projection of the one or the group of sub-pixels on a plane where the grid is located falls into a corresponding grid. ### Claim 6 (depends on 4) The touch panel according to claim 4, wherein a sub-pixel comprises a drive structure layer provided on the substrate and a light-emitting structure layer provided on the drive structure layer, the light-emitting structure layer is used for emitting display light, the drive structure layer is connected to the light-emitting structure layer for controlling and driving the light-emitting structure layer. ### Claim 7 (depends on 1) The touch panel according to claim 1, wherein adjacent second touch electrodes or adjacent first touch electrodes are electrically connected by a bridge, the first touch electrodes and the second touch electrodes are located on a same side of an insulating layer, wherein the bridge, and the first touch electrodes and the second touch electrodes are provided on two sides of the insulating layer respectively. ### Claim 8 (depends on 1) The touch panel according to claim 1, wherein the substrate comprises a sub-pixel area and a peripheral area located around the sub-pixel area, and adjacent first touch electrodes and/or adjacent second touch electrodes are connected in the peripheral area; or the touch panel further comprises a floating electrode provided on the substrate, and the floating electrode is provided on the same layer as the first touch electrodes and the second touch electrodes, and the floating electrode is insulated from the first touch electrodes and the second touch electrodes. ### Claim 9 A touch panel, comprising a substrate, a plurality of first touch electrodes provided at intervals and a plurality of second touch electrodes provided at intervals on a same layer on the substrate, wherein adjacent second touch electrodes or adjacent first touch electrodes are electrically connected by a bridge, and a plurality of grooves are further provided on the substrate, and an orthographic projection of the first touch electrodes and the second touch electrodes on the substrate does not overlap with an orthographic projection of the grooves on the substrate, and an orthographic projection of the bridge on the substrate does not overlap with the orthographic projection of the grooves on the substrate. ### Claim 10 (depends on 9) The touch panel according to claim 9, wherein at least one of the bridges is located between adjacent grooves. ### Claim 11 (depends on 9) The touch panel according to claim 9, further comprising an encapsulation layer and a buffer layer, wherein at least one of the bridges is located between adjacent grooves, and the encapsulation layer and a second buffer layer are filled in the grooves. ### Claim 12 (depends on 11) The touch panel according to claim 11, wherein a distance from the encapsulation layer or the buffer layer to the substrate at the grooves is smaller than a distance from the encapsulation layer or the buffer layer to the substrate at the touch electrodes. ### Claim 13 (depends on 9) The touch panel according to claim 9, wherein both the first touch electrodes and the second touch electrodes are in a grid structure. ### Claim 14 (depends on 9) The touch panel according to claim 9, further comprising a plurality of sub-pixels provided on the substrate, and the grid structure is provided on the sub-pixels. ### Claim 15 (depends on 14) The touch panel according to claim 14, wherein in the grid structure, each grid corresponds to one or one group of sub-pixels, and a projection of the one or the group of sub-pixels on a plane where the grid is located falls into a corresponding grid; or wherein a sub-pixel comprises a drive structure layer provided on the substrate and a light-emitting structure layer provided on the drive structure layer, the light-emitting structure layer is used for emitting display light, the drive structure layer is connected to the light-emitting structure layer for controlling and driving the light-emitting structure layer. ### Claim 16 (depends on 9) The touch panel according to claim 9, wherein adjacent second touch electrodes or adjacent first touch electrodes are electrically connected by a bridge, the first touch electrodes and the second touch electrodes are located on a same side of an insulating layer, wherein the bridge, and the first touch electrodes and the second touch electrodes are provided on two sides of the insulating layer respectively. ### Claim 17 (depends on 9) The touch panel according to claim 9, wherein the substrate comprises a sub-pixel area and a peripheral area located around the sub-pixel area, and adjacent first touch electrodes and/or adjacent second touch electrodes are connected in the peripheral area; or the touch panel further comprises a floating electrode provided on the substrate, and the floating electrode is provided on the same layer as the first touch electrodes and the second touch electrodes, and the floating electrode is insulated from the first touch electrodes and the second touch electrodes. ### Claim 18 (depends on 1) A display device, comprising the touch panel according to claim 1. ### Claim 19 (depends on 9) A display device, comprising the touch panel according to claim 9. ### Claim 20 A method for preparing a touch panel, comprising: forming grooves on a substrate, and filling an encapsulation layer and a buffer layer in the grooves; forming a plurality of first touch electrodes provided at intervals and a plurality of second touch electrodes provided at intervals on the substrate, such that the first touch electrodes and the second touch electrodes are insulated from each other, and an orthographic projection of the first touch electrodes and the second touch electrodes on the substrate does not overlap with an orthographic projection of the grooves on the substrate.