# US 11,029,776 B2 · Touch panel and manufacturing method therefor, and roll sheet of touch sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,776 B2 - Document ID: US11029776B2 - Status: Granted - Kind: B2 - Application number: 16/579,808 - Filed: 2019-09-23 - Published: 2020-03-26 - Granted: 2021-06-08 - Earliest claimed: 2018-09-21 - Assignees: TPK Touch Solutions Inc.; TPK Glass Solutions (Xiamen) Inc. - Applicants: TPK Touch Solutions Inc.; TPK Glass Solutions (Xiamen) Inc. - Inventors: Wei-Chia Fang; Ho-Chien Wu; Chun-Hung Chu; Chung-Chin Hsiao - Web page: https://patentgrep.com/patent/US11029776B2 ## CPC - 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 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column 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 includes a substrate, a catalytic layer, peripheral traces, marks, first cover layers and second cover layers. The catalytic layer is formed on the peripheral area of the substrate, and the peripheral traces are formed on the catalytic layer. Each peripheral trace has a side wall and a top surface. The marks are formed on the catalytic layer, and each mark has a side wall and a top surface. The first cover layers cover the top surfaces of the peripheral traces, and the second cover layers cover the top surfaces of the marks. Each of the first cover layers and the second cover layers includes metal nanowires. The manufacturing method of the touch panel and a roll sheet of touch sensors are also disclosed. ## Claims ### Claim 1 A touch panel, comprising: a substrate comprising a display area and a peripheral area; a catalytic layer formed on the peripheral area; a peripheral trace formed on the catalytic layer, wherein the peripheral trace has a side wall and a top surface; a mark formed on the catalytic layer, wherein the mark has a side wall and a top surface; a first cover layer and a second cover layer, wherein the first cover layer covers the top surface of the peripheral trace, the second cover layer covers the top surface of the mark, the first cover layer and the second cover layer at least comprise metal nanowires, and the peripheral trace, the mark, the first cover layer and the second cover layer are formed on the peripheral area of the substrate; and a touch sensing electrode formed on the display area of the substrate, wherein the touch sensing electrode is electrically connected with the peripheral trace via the first cover layer, wherein the touch sensing electrode, the first cover layer and the second cover layer are made of same metal nanowire layer. ### Claim 2 (depends on 1) The touch panel of claim 1, wherein the catalytic layer is an insulation layer comprising catalytic particles. ### Claim 3 (depends on 2) The touch panel of claim 2, wherein the catalytic particles comprise nanoparticles. ### Claim 4 (depends on 1) The touch panel of claim 1, further comprising a non-conductive area located on the display area and the peripheral area. ### Claim 5 (depends on 4) The touch panel of claim 4, further comprising: a film layer formed on the touch sensing electrode, the first cover layer, the second cover layer, and a portion of the catalytic layer in the non-conductive area on the peripheral area. ### Claim 6 (depends on 1) The touch panel of claim 1, wherein the first cover layer has a side surface, and the side surface and the side wall of the peripheral trace are a coplanar surface formed by etching. ### Claim 7 (depends on 1) The touch panel of claim 1, wherein the second cover layer has a side surface, and the side surface and the side wall of the mark are a coplanar surface formed by etching. ### Claim 8 (depends on 1) The touch panel of claim 1, wherein the mark comprises a bonding alignment mark. ### Claim 9 (depends on 1) The touch panel of claim 1, wherein a width of the peripheral trace ranges from 5 μm to 20 μm, and a distance between the peripheral trace and an adjacent peripheral trace ranges from 5 μm to 20 μm. ### Claim 10 (depends on 1) The touch panel of claim 1, wherein the peripheral trace and the mark are made of metal material, and the touch sensing electrode at least comprises the metal nanowires. ### Claim 11 (depends on 1) The touch panel of claim 1, wherein a resistance value between the peripheral trace and an adjacent peripheral trace is greater than 1×103 ohm. ### Claim 12 A roll sheet of touch sensors, comprising: a substrate, wherein the substrate is configured with a plurality of touch panels and a removing area, each of the touch panels comprises a display area, a peripheral area, a peripheral trace, a first cover layer and a touch sensing electrode, wherein a catalytic layer is formed on the peripheral area and the removing area, the peripheral trace is formed on the catalytic layer, the peripheral trace has a side wall and a top surface, the first cover layer covers the top surface of the peripheral trace, the peripheral trace and the first cover layer are formed on the peripheral area of each of the touch panels, the touch sensing electrode is formed on the display area of each of the touch panels, and the touch sensing electrode is electrically connected with the peripheral traces via the first cover layer; a mark formed on the catalytic layer, wherein the mark has a side wall and a top surface; and a second cover layer formed on the top surface of the mark, wherein the first cover layer comprises metal nanowires and the second cover layer comprises metal nanowires, wherein the touch sensing electrode, the first cover layer and the second cover layer are made of same metal nanowire layer. ### Claim 13 (depends on 12) The roll sheet of claim 12, wherein the catalytic layer is an insulation layer comprising catalytic particles. ### Claim 14 (depends on 13) The roll sheet of claim 13, wherein the catalytic particles comprise nanoparticles. ### Claim 15 (depends on 12) The roll sheet of claim 12, wherein each of the touch panels further comprises a non-conductive area located on the display area and the peripheral area. ### Claim 16 (depends on 15) The roll sheet of claim 15, wherein each of the touch panels further comprises: a film layer covering the touch sensing electrode, the catalytic layer, the first cover layers and the second cover layers. ### Claim 17 (depends on 12) The roll sheet of claim 12, wherein the first cover layer has a side surface, and the side surface and the side wall of the peripheral trace are a coplanar surface formed by etching. ### Claim 18 (depends on 12) The roll sheet of claim 12, wherein the second cover layer has a side surface, and the side surface and the side wall of the mark are a coplanar surface formed by etching. ### Claim 19 (depends on 12) The roll sheet of claim 12, wherein the mark comprises a bonding alignment mark disposed in the peripheral area of each of the touch panels, or the mark comprises a cutting alignment mark, an alignment mark, a direction-indication mark, a scale mark or a digital/letter mark formed on the removing area. ### Claim 20 (depends on 12) The roll sheet of claim 12, wherein a width of the peripheral trace ranges from 5 μm to 20 μm, and a distance between the peripheral trace and an adjacent peripheral trace ranges from 5 μm to 20 μm. ### Claim 21 (depends on 12) The roll sheet of claim 12, wherein the peripheral trace and the mark are made of metal material, and the touch sensing electrode at least comprises metal nanowires. ### Claim 22 (depends on 12) The roll sheet of claim 12, wherein a resistance value between the peripheral trace and an adjacent peripheral trace is greater than 1×103 ohm. ### Claim 23 A manufacturing method of a touch panel, comprising: providing a substrate, wherein the substrate comprises a display area and a peripheral area; forming a catalytic layer on the peripheral area; forming a metal layer on the catalytic layer; forming a metal nanowire layer on the display area and the peripheral area; and performing a patterning step for patterning the metal layer to form a peripheral trace and a mark, wherein the peripheral trace and the mark are formed on the catalytic layer, the peripheral trace has a side wall and a top surface, and the mark has a side wall and a top surface; wherein the patterning step patterns the metal nanowire layer to form a touch sensing electrode within the display area, a first cover layer and a second cover layer within the peripheral area, wherein the first cover layer covers the top surface of the peripheral trace, and the second cover layer covers the top surface of the mark. ### Claim 24 (depends on 23) The manufacturing method of claim 23, wherein the patterning step further patterns the metal nanowire layer to form a touch sensing electrode, the touch sensing electrode is formed on the display area of the substrate, and the touch sensing electrode is electrically connected to the peripheral trace. ### Claim 25 (depends on 24) The manufacturing method of claim 24, wherein the catalytic layer is printed on the peripheral area. ### Claim 26 (depends on 23) The manufacturing method of claim 23, wherein the catalytic layer is formed by printing an insulation material comprising catalytic particles on the peripheral area. ### Claim 27 (depends on 26) The manufacturing method of claim 26, wherein the catalytic particles comprises nanoparticles. ### Claim 28 (depends on 23) The manufacturing method of claim 23, wherein the metal layer is formed on the catalytic layer by chemical plating. ### Claim 29 (depends on 24) The manufacturing method of claim 24, wherein the patterning step is configured to simultaneously etch the metal nanowire layer and the metal layer by an etchant. ### Claim 30 (depends on 23) The manufacturing method of claim 23, wherein the touch panel further comprises a non-conductive area formed on the display area and the peripheral area. ### Claim 31 (depends on 30) The manufacturing method of claim 30, wherein the touch panel further comprises a film layer covering the touch sensing electrode, the first cover layer, the second cover layer, and a portion of the catalytic layer in the non-conductive area on the peripheral area. ### Claim 32 (depends on 23) The manufacturing method of claim 23, wherein the first cover layer has a side surface, and the side surface and the side wall of the peripheral trace are a coplanar surface formed by etching. ### Claim 33 (depends on 23) The manufacturing method of claim 23, wherein the second cover layer has a side surface, and the side surface and the side wall of the mark are a coplanar surface formed by etching. ### Claim 34 (depends on 23) The manufacturing method of claim 23, wherein the mark comprises a bonding alignment mark. ### Claim 35 (depends on 23) The manufacturing method of claim 23, wherein a width of the peripheral traces ranges from 5 μm to 20 μm, and a distance between the peripheral trace and an adjacent peripheral trace ranges from 5 μm to 20 μm. ### Claim 36 (depends on 23) The manufacturing method of claim 23, wherein a resistance value between the peripheral trace and an adjacent peripheral trace is greater than 1×103 ohm.