# US 10,372,263 B2 · Touch sensor, touch panel and electrode structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,372,263 B2 - Document ID: US10372263B2 - Status: Granted - Kind: B2 - Application number: 15/963,856 - Filed: 2018-04-26 - Published: 2018-08-30 - Granted: 2019-08-06 - Earliest claimed: 2013-11-29 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Hiroshige Nakamura - Web page: https://patentgrep.com/patent/US10372263B2 ## CPC - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - 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 touch sensor includes a base, first and second electrodes that are formed on a main surface of the transparent base so as to face each other, and an extraction electrode that is formed on the main surface of the transparent base and extends from the second electrode. The first electrode has a shape which surrounds a portion of the second electrode. At least the extraction electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ## Claims ### Claim 1 A touch sensor comprising: a base; a first electrode and a second electrode that are formed on a main surface of the base so as to face each other; and an extraction electrode that is formed on the main surface of the base and is extended from the second electrode, wherein the first electrode has a shape which surrounds a portion of the second electrode, and at least the extraction electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ### Claim 2 (depends on 1) The touch sensor according to claim 1, wherein a direction in which the thin metal wire forming the mesh pattern extends is inclined with respect to a direction in which the extraction electrode extends. ### Claim 3 (depends on 1) The touch sensor according to claim 1, wherein, when a total length of a path in which a thin metal wire forming a portion that faces the second electrode in the outer periphery of the first electrode and a thin metal wire forming a portion that faces the first electrode in the outer periphery of the second electrode face each other in parallel is L mm and an area that is surrounded by the outer periphery of the second electrode is A mm2, a value of L/A is equal to or greater than 1.0 mm−1. ### Claim 4 (depends on 2) The touch sensor according to claim 2, wherein, when a total length of a path in which a thin metal wire forming a portion that faces the second electrode in the outer periphery of the first electrode and a thin metal wire forming a portion that faces the first electrode in the outer periphery of the second electrode face each other in parallel is L mm and an area that is surrounded by the outer periphery of the second electrode is A mm2, a value of L/A is equal to or greater than 1.0 mm−1. ### Claim 5 (depends on 1) The touch sensor according to claim 1, wherein a pitch of the mesh pattern is equal to or greater than 200 μm and equal to or less than 300 μm. ### Claim 6 (depends on 2) The touch sensor according to claim 2, wherein a pitch of the mesh pattern is equal to or greater than 200 μm and equal to or less than 300 μm. ### Claim 7 (depends on 3) The touch sensor according to claim 3, wherein a pitch of the mesh pattern is equal to or greater than 200 μm and equal to or less than 300 μm. ### Claim 8 (depends on 1) The touch sensor according to claim 1, wherein a plurality of the second electrodes are provided, and the plurality of second electrodes are scattered in the form of islands. ### Claim 9 (depends on 8) The touch sensor according to claim 8, wherein the plurality of second electrodes which are scattered in the form of islands are arranged in a first direction, and the first electrode includes a strip portion which extends in a strip shape in the first direction and a surrounding portion which protrudes from the strip portion and surrounds a portion of the second electrode. ### Claim 10 (depends on 9) The touch sensor according to claim 9, wherein a plurality of the first electrodes are provided, the plurality of second electrodes which are scattered in the form of islands are arranged in a matrix, and the plurality of first electrodes are arranged in a second direction perpendicular to the first direction. ### Claim 11 (depends on 10) The touch sensor according to claim 10, wherein, in each extraction electrode which extends from each of the plurality of second electrodes arranged in the first direction, a region which is adjacent to the corresponding first electrode extends in the first direction. ### Claim 12 (depends on 11) The touch sensor according to claim 11, wherein the first electrode and the second electrode are formed in a mesh pattern including a plurality of grids which are formed by thin metal wires, a dummy pattern which is formed by thin metal wires and is not connected to the first electrode and the second electrode is formed at least between the first electrode and the second electrode, and the plurality of grids are uniformly arranged across at least the first electrode and the second electrode in a top view. ### Claim 13 (depends on 12) The touch sensor according to claim 12, wherein a dummy pattern which is formed by thin metal wires and is not connected to a plurality of the extraction electrodes is formed between the plurality of extraction electrodes, and the plurality of grids are uniformly arranged across the first electrode, the second electrode, and the extraction electrode in a top view. ### Claim 14 (depends on 1) The touch sensor according to claim 1, wherein each of the second electrodes has a shape in which a plurality of branch portions extend radially, and the first electrode has a shape which surrounds at least the plurality of branch portions of the second electrode. ### Claim 15 (depends on 14) The touch sensor according to claim 14, wherein the branch portions which extend radially in the second electrode are scattered in the form of islands. ### Claim 16 (depends on 15) The touch sensor according to claim 15, wherein the plurality of branch portions are arranged in the first direction. ### Claim 17 (depends on 1) The touch sensor according to claim 1, wherein the first electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ### Claim 18 (depends on 1) The touch sensor according to claim 1, wherein the second electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ### Claim 19 (depends on 1) A touch panel comprising: the touch sensor according to claim 1 that is provided on the display panel of the display device, wherein the touch sensor includes: the base; the first electrode and the second electrode that are formed on the main surface of the base so as to face each other; and the extraction electrode that is formed on the main surface of the base and is extended from the second electrode, the first electrode has a shape which surrounds a portion of the second electrode, and at least the extraction electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ### Claim 20 (depends on 19) The touch panel according to claim 19, wherein the touch sensor includes a sensor region that corresponds to a display screen of the display panel and a terminal wiring region that corresponds to an outer peripheral portion of the display panel, and the extraction electrode, the first electrode, and second electrode are formed in the sensor region. ### Claim 21 A touch panel comprising: a base; a first electrode and a second electrode that are formed on a main surface of the base so as to face each other; and an extraction electrode that is formed on the main surface of the base and is extended from the second electrode, wherein the first electrode has a shape which surrounds a portion of the second electrode, and at least the extraction electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires. ### Claim 22 An electrode structure comprising: a first electrode and a second electrode facing each other; and an extraction electrode that is extended from the second electrode, wherein the first electrode has a shape which surrounds a portion of the second electrode, and at least the extraction electrode is formed in a mesh pattern including a plurality of grids which are formed by thin metal wires.