# US 2017/0285807 A1 · Touch Display Panel, Method For Fabrication Thereof 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 2017/0285807 A1 - Document ID: US20170285807A1 - Status: Published application - Kind: A1 - Application number: 15/511,497 - Filed: 2016-04-14 - Published: 2017-10-05 - Earliest claimed: 2015-06-05 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Inventors: Xiaowei LIU; Yao LIU; Liangliang LI; Xiangqian DING; Jinchao BAI - Web page: https://patentgrep.com/patent/US20170285807A1 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - 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 The embodiments of the disclosure disclose a touch display panel, a method for fabrication thereof and a display device. The touch display panel comprises a display substrate, a transparent conductive layer formed on the display substrate, a transparent insulating layer formed on the transparent conductive layer, and a touch electrode formed on the transparent insulating layer. The embodiments of the disclosure can reduce accumulation of static electricity in the manufacture procedure of the display substrate and prevent electromagnetic interference when performing cell test by adding a transparent conductive layer and a transparent insulating layer between the touch substrate and the touch electrode. ## Claims ### Claim 1 A touch display panel, comprising: a display substrate, a transparent conductive layer formed on the display substrate, a transparent insulating layer formed on the transparent conductive layer, and a touch electrode formed on the transparent insulating layer. ### Claim 2 (depends on 1) The touch display panel according to claim 1, wherein the transparent conductive layer and/or the transparent insulating layer are/is an anti-reflection film. ### Claim 3 (depends on 1) The touch display panel according to claim 1, wherein the refractive index of the transparent conductive layer is greater than the refractive index of the display substrate and is less than the refractive index of the transparent insulating layer. ### Claim 4 (depends on 1) The touch display panel according to claim 1, wherein the refractive index of the transparent conductive layer conforms to the following formula: n1=√{square root over (n0n2)} wherein n1 is the refractive index of the transparent conductive layer, n2 is the refractive index of the transparent insulating layer, and n0 is the refractive index of the display substrate. ### Claim 5 (depends on 1) The touch display panel according to claim 1, wherein the optical thickness of the transparent conductive layer is odd times of a quarter of the wavelength of light incident to the transparent conductive layer. ### Claim 6 (depends on 1) The touch display panel according to claim 1, wherein the transparent insulating layer consists of multiple transparent insulating films with different refractive indexes, and the thickness of the transparent conductive layer and the thickness of each of the multiple transparent insulating films are obtained by computation by way of an interference matrix. ### Claim 7 (depends on 6) The touch display panel according to claim 6, wherein the refractive index of each transparent insulating film of the transparent insulating layer decreases gradually in the direction close to the transparent conductive layer. ### Claim 8 A method for fabricating a touch display panel, comprising: forming a transparent conductive layer on a display substrate; forming at least one insulating layer on the transparent conductive layer; and forming a touch electrode on the at least one insulating layer. ### Claim 9 (depends on 8) The method according to claim 8, wherein the refractive index of the transparent conductive layer is greater than the refractive index of the display substrate and is less than the refractive index of the transparent insulating layer. ### Claim 10 (depends on 8) The method according to claim 8, wherein the refractive index of the transparent conductive layer conforms to the following formula: n1=√{square root over (n0n2)} wherein n1 is the refractive index of the transparent conductive layer, n2 is the refractive index of the transparent insulating layer, and n0 is the refractive index of the display substrate. ### Claim 11 (depends on 8) The method according to claim 8, wherein the optical thickness of the transparent conductive layer is odd times of a quarter of the wavelength of light incident to the transparent conductive layer. ### Claim 12 (depends on 8) The method according to claim 8, wherein forming at least one insulating layer on the transparent conductive layer comprises: forming multiple overlay transparent insulating films with different refractive indexes on the transparent conductive layer. ### Claim 13 (depends on 12) The method according to claim 12, wherein the refractive index of each transparent insulating film decreases gradually in the direction close to the transparent conductive layer. ### Claim 14 (depends on 1) A display device comprising the touch display panel according to claim 1. ### Claim 15 (depends on 2) The touch display panel according to claim 2, wherein the refractive index of the transparent conductive layer is greater than the refractive index of the display substrate and is less than the refractive index of the transparent insulating layer. ### Claim 16 (depends on 2) The touch display panel according to claim 2, wherein the refractive index of the transparent conductive layer conforms to the following formula: n1=√{square root over (n0n2)} wherein n1 is the refractive index of the transparent conductive layer, n2 is the refractive index of the transparent insulating layer, and n0 is the refractive index of the display substrate. ### Claim 17 (depends on 3) The touch display panel according to claim 3, wherein the refractive index of the transparent conductive layer conforms to the following formula: n1=√{square root over (n0n2)} wherein n1 is the refractive index of the transparent conductive layer, n2 is the refractive index of the transparent insulating layer, and n0 is the refractive index of the display substrate. ### Claim 18 (depends on 2) The touch display panel according to claim 2, wherein the optical thickness of the transparent conductive layer is odd times of a quarter of the wavelength of light incident to the transparent conductive layer. ### Claim 19 (depends on 3) The touch display panel according to claim 3, wherein the optical thickness of the transparent conductive layer is odd times of a quarter of the wavelength of light incident to the transparent conductive layer. ### Claim 20 (depends on 4) The touch display panel according to claim 4, wherein the optical thickness of the transparent conductive layer is odd times of a quarter of the wavelength of light incident to the transparent conductive layer.