# US 12,602,138 B2 · Touch panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,602,138 B2 - Document ID: US12602138B2 - Status: Granted - Kind: B2 - Application number: 18/671,556 - Filed: 2024-05-22 - Published: 2024-12-05 - Granted: 2026-04-14 - Earliest claimed: 2023-06-05 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Masaya Nakayama - Web page: https://patentgrep.com/patent/US12602138B2 ## CPC - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/04164: {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 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 panel that makes it possible to narrow a peripheral region which is not used for touch detection. The touch panel has a configuration in which a first conductive layer consisting of a first fine metal wire, an insulating layer, and a second conductive layer consisting of a second fine metal wire are sequentially laminated, the first conductive layer has first detection electrodes, first dummy electrodes, and second wiring lines that are disposed on the first dummy electrode, the second conductive layer has second detection electrodes, connecting portions that penetrate the insulating layer and connect the second detection electrodes and the second wiring lines to each other are provided, the first fine metal wire and the second fine metal wire are combined with each other to constitute a mesh pattern, and the second wiring line constitutes a part of the mesh pattern. ## Claims ### Claim 1 A touch panel comprising: a touch region; and a peripheral region that is present outside the touch region, wherein the touch panel has a configuration in which a first conductive layer consisting of a first fine metal wire, an insulating layer, and a second conductive layer consisting of a second fine metal wire are sequentially laminated, the first conductive layer has a plurality of first detection electrodes that are formed in the touch region, extend along a first direction, and are arranged in a second direction orthogonal to the first direction, a plurality of first dummy electrodes that are disposed between the plurality of first detection electrodes and insulated from the plurality of first detection electrodes, a plurality of first wiring lines that are formed in the peripheral region and connected to the first detection electrodes, and a plurality of second wiring lines that are disposed in the plurality of first dummy electrodes, the second conductive layer has a plurality of second detection electrodes that are formed in the touch region, extend along the second direction, and are arranged in the first direction, a plurality of connecting portions, which penetrate the insulating layer and connect the plurality of second detection electrodes and the plurality of second wiring lines to each other, are provided, in planar view, the plurality of first detection electrodes have a first mesh pattern formed from the first fine metal wire, the plurality of second detection electrodes has a second mesh pattern formed from the second fine metal wire, in the touch region, the first mesh pattern and the second mesh pattern are combined with each other in planar view to constitute a third mesh pattern, the third mesh pattern is disposed in an entirety of the touch region, the plurality of second wiring lines constitute a part of the third mesh pattern, wherein the plurality of first dummy electrodes has the first mesh pattern, and the plurality of second wiring lines constitute a part of the first mesh pattern in planar view. ### Claim 2 (depends on 1) The touch panel according to claim 1, wherein each of the plurality of second wiring lines forms a second wiring pattern which is mesh-like. ### Claim 3 (depends on 2) The touch panel according to claim 2, wherein the first mesh pattern is composed of a plurality of first basic mesh cells, and a width of the second wiring pattern is equal to or more than 2 times a width of the first basic mesh cell. ### Claim 4 (depends on 1) The touch panel according to claim 1, wherein each of the plurality of second wiring lines forms a second wiring pattern which is mesh-like, and the plurality of second wiring lines have a fourth mesh pattern that is included in the third mesh pattern in planar view and is different from the first mesh pattern and the second mesh pattern. ### Claim 5 (depends on 4) The touch panel according to claim 4, wherein the first mesh pattern is composed of a plurality of first basic mesh cells, and a width of the second wiring pattern is equal to or more than 2 times a width of the first basic mesh cell. ### Claim 6 (depends on 1) The touch panel according to claim 1, wherein the second wiring lines and the corresponding second detection electrodes are connected to each other by three or more of the connecting portions. ### Claim 7 (depends on 4) The touch panel according to claim 4, wherein a wiring line density of the second wiring line is higher than a wiring line density of the first detection electrode. ### Claim 8 (depends on 4) The touch panel according to claim 4, wherein the connecting portion is disposed at an intersection portion between the fourth mesh pattern and the second mesh pattern in planar view. ### Claim 9 (depends on 4) The touch panel according to claim 4, wherein the fourth mesh pattern overlaps the second mesh pattern at an intersection of the second mesh pattern, and the connecting portion is disposed at the intersection of the second mesh pattern. ### Claim 10 (depends on 1) The touch panel according to claim 1, wherein the connecting portion is composed of a conductive material different from a conductive material that constitutes the second detection electrode and the second wiring line. ### Claim 11 (depends on 10) The touch panel according to claim 10, wherein the conductive material of the connecting portion is a transparent conductive material. ### Claim 12 (depends on 1) The touch panel according to claim 1, wherein the first dummy electrode has a first ground wiring line that is disposed between the first detection electrode and the second wiring line and is insulated from the first detection electrode and the second wiring line, and the first ground wiring line constitutes a part of the first mesh pattern. ### Claim 13 (depends on 12) The touch panel according to claim 12, wherein the first ground wiring line forms a mesh-like ground wiring pattern. ### Claim 14 (depends on 13) The touch panel according to claim 13, wherein a width of the ground wiring pattern is smaller than a width of a second wiring pattern. ### Claim 15 (depends on 1) The touch panel according to claim 1, wherein the first fine metal wire has at least two or more disconnected portions that are adjacent to each other in a direction in which the first fine metal wire extends, between the second wiring line and the first detection electrode adjacent to the second wiring line. ### Claim 16 (depends on 12) The touch panel according to claim 12, wherein the first fine metal wire has at least two or more disconnected portions, each of which is adjacent in a direction in which the first fine metal wire extends, between the first ground wiring line and the first detection electrode adjacent to the first ground wiring line and between the first ground wiring line and the second wiring line adjacent to the first ground wiring line. ### Claim 17 (depends on 1) The touch panel according to claim 1, wherein a thickness of the insulating layer is 0.5 μm or more and 5.0 μm or less.