# US 11,029,789 B2 · Touch structure and method of manufacturing the same, touch substrate and touch display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,789 B2 - Document ID: US11029789B2 - Status: Granted - Kind: B2 - Application number: 16/860,329 - Filed: 2020-04-28 - Published: 2021-04-01 - Granted: 2021-06-08 - Earliest claimed: 2019-09-26 - Assignees: Wuhan BOE Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Wuhan BOE Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Wei Zhang; Yuanhui Guo; Yujie Gao; Xiaoyu Huang; Xiaoguang Yang - Web page: https://patentgrep.com/patent/US11029789B2 ## CPC - G06F 3/044: by capacitive means - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - 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 structure includes a touch functional layer and a first transparent layer. The touch functional layer includes a first conductive layer and a second conductive layer that are stacked. The first conductive layer includes a plurality of electrodes spaced apart from each other. Orthographic projections of the plurality of electrodes and a region between any two adjacent electrodes of the plurality of electrodes on a plane perpendicular to a thickness direction of the touch functional layer is within a range of an orthographic projection of the first transparent layer on the plane. ## Claims ### Claim 1 A touch structure, comprising: a touch functional layer configured to identify a touch, wherein the touch functional layer includes a first conductive layer and a second conductive layer that are stacked, and the first conductive layer includes a plurality of electrodes spaced apart from each other; and a first transparent layer, wherein orthographic projections of the plurality of electrodes and a region between any two adjacent electrodes of the plurality of electrodes on a plane perpendicular to a thickness direction of the touch functional layer is within a range of an orthographic projection of the first transparent layer on the plane, wherein the first transparent layer is disposed at a side of the first conductive layer away from the second conductive layer, and a refractive index of the first transparent layer is greater than or equal to a refractive index of the first conductive layer, or the first transparent layer is disposed between the first conductive layer and the second conductive layer, a material of the first transparent layer is an insulating material, and the refractive index of the first transparent layer is equal to the refractive index of the first conductive layer. ### Claim 2 (depends on 1) The touch structure according to claim 1, further comprising a second transparent layer, wherein the first transparent layer is disposed at the side of the first conductive layer away from the second conductive layer, the second transparent layer is disposed on a side of the first transparent layer in the thickness direction of the touch functional layer, and the second transparent layer is in contact with the first transparent layer; and a refractive index of the second transparent layer is less than the refractive index of the first transparent layer. ### Claim 3 (depends on 2) The touch structure according to claim 2, wherein an orthographic projection of the second transparent layer on the plane completely overlaps an orthographic projection of the first transparent layer on the plane. ### Claim 4 (depends on 2) The touch structure according to claim 2, wherein a thickness of the second transparent layer satisfies: D=(2k+1)*λ/4, wherein D is the thickness of the second transparent layer, k is a natural number less than or equal to 10, and λ is a wavelength of visible light. ### Claim 5 (depends on 4) The touch structure according to claim 4, wherein the second transparent layer is disposed between the first transparent layer and the first conductive layer, and the refractive index of the second transparent layer satisfies: n32=n1*n2, wherein n1 is the refractive index of the first conductive layer, n2 is the refractive index of the first transparent layer, n3 is the refractive index of the second transparent layer, and the refractive index of the first conductive layer is not equal to the refractive index of the second conductive layer. ### Claim 6 (depends on 2) The touch structure according to claim 2, wherein a material of the second transparent layer is an insulating material. ### Claim 7 (depends on 1) The touch structure according to claim 1, further comprising a second transparent layer, wherein the first transparent layer is disposed between the first conductive layer and the second conductive layer, and the second transparent layer is disposed between the first transparent layer and the second conductive layer; and an orthographic projection of the second transparent layer on the plane completely overlaps an orthographic projection of the first transparent layer on the plane. ### Claim 8 (depends on 1) The touch structure according to claim 1, further comprising a second transparent layer, wherein the first transparent layer is disposed between the first conductive layer and the second conductive layer, and the second transparent layer is disposed between the first transparent layer and the first conductive layer; and an orthographic projection of the second transparent layer on the plane completely overlaps an orthographic projection of the first conductive layer on the plane. ### Claim 9 (depends on 1) The touch substrate according to claim 1, wherein the first conductive layer and the second conductive layer are made of silver nanowires. ### Claim 10 (depends on 1) A touch substrate, comprising a base substrate and the touch structure according to claim 1 disposed above the base substrate. ### Claim 11 (depends on 10) The touch substrate according to claim 10, wherein the base substrate is a cover sheet; and the first conductive layer in the touch structure is closer to the cover sheet than the second conductive layer. ### Claim 12 (depends on 1) A touch display device, comprising: a display panel; and the touch structure according to claim 1, wherein the first conductive layer in the touch structure is closer to a light exit surface of the touch display device than the second conductive layer. ### Claim 13 (depends on 12) The touch display device according to claim 12, wherein the display panel includes an array substrate, an opposite substrate, and a liquid crystal layer disposed between the array substrate and the opposite substrate; and the touch structure is disposed on a surface of the array substrate facing the liquid crystal layer. ### Claim 14 (depends on 12) The touch display device according to claim 12, wherein the display panel includes an array substrate, an opposite substrate, and a liquid crystal layer disposed between the array substrate and the opposite substrate; and the touch structure is disposed on a surface of the opposite substrate facing away from the liquid crystal layer. ### Claim 15 (depends on 12) The touch display device according to claim 12, wherein the display panel includes a display substrate and an encapsulation layer configured to encapsulate the display substrate; and the touch structure is disposed on a surface of the encapsulation layer facing away from the display substrate. ### Claim 16 (depends on 1) A method of manufacturing the touch structure according to claim 1, the method comprising: forming the second conductive layer on a base through a first patterning process; forming the first transparent layer on the second conductive layer, wherein a material of the first transparent layer is an insulating material; and forming the first conductive layer on the first transparent layer through a second patterning process, wherein the refractive index of the first transparent layer is equal to the refractive index of the first conductive layer. ### Claim 17 (depends on 16) The method according to claim 16, wherein forming the first conductive layer on the first transparent layer through the second patterning process, includes: forming a first conductive film on the first transparent layer, and patterning the first conductive film to form the first conductive layer. ### Claim 18 (depends on 17) The method according to claim 17, wherein the first conductive film is made of silver nanowires, and the second patterning process includes a laser process. ### Claim 19 (depends on 16) The method according to claim 16, wherein after forming the first transparent layer, the method further comprises: forming a second transparent film on the first transparent layer, and forming the first conductive layer includes: forming a first conductive film on the second transparent film, wherein the first conductive film and the second transparent film are simultaneously processed through a same patterning process to form the first conductive layer and a second transparent layer, and an orthographic projection of the second transparent layer on the base completely overlaps an orthographic projection of the first conductive layer on the base.