# US 2014/0192009 A1 · Touch panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192009 A1 - Document ID: US20140192009A1 - Status: Published application - Kind: A1 - Application number: 13/930,755 - Filed: 2013-06-28 - Published: 2014-07-10 - Earliest claimed: 2013-01-07 - Assignees: Novatek Microelectronics Corp. - Applicants: Novatek Microelectronics Corp. - Inventors: Chih-Chang LAI; Ta-Keng WENG - Web page: https://patentgrep.com/patent/US20140192009A1 ## 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 3/0448: {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 2203/04111: 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: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch panel comprising a substrate, a plurality of first sensing electrodes, a plurality of second sensing electrodes, an insulating layer and a cover lens is provided. The first sensing electrodes are disposed on the substrate and are arranged in a first direction. The second sensing electrodes are disposed on the substrate and are arranged in a second direction. The first direction and the second directions are different. The insulating layer is disposed between the first and the second sensing electrodes. The cover lens is disposed on the insulating layer and has a non-uniform thickness. At least one of the surface areas of the first and the second sensing electrodes is related to the non-uniform thickness of the cover lens. ## Claims ### Claim 1 A touch panel, comprising: a substrate; a plurality of first sensing electrodes disposed on the substrate and arranged in a first direction; a plurality of second sensing electrodes disposed on the substrate and arranged in a second direction different from the second direction; an insulating layer disposed between the first and the second sensing electrodes; and a cover lens disposed on the insulating layer and having a non-uniform thickness, wherein at least one of a surface area of the first sensing electrodes and a surface area of the second sensing electrodes is related to the non-uniform thickness of the cover lens. ### Claim 2 (depends on 1) The touch panel according to claim 1, wherein the first sensing electrodes comprise a plurality of first sub-electrodes and a plurality of second sub-electrodes, and a surface area of the first sub-electrodes is larger than a surface area of the second sub-electrodes. ### Claim 3 (depends on 2) The touch panel according to claim 2, wherein the first sensing electrodes further comprise a plurality of first wires electrically connecting two adjacent ones of the first and the second sub-electrodes. ### Claim 4 (depends on 3) The touch panel according to claim 3, wherein the second sensing electrodes comprise a plurality of third sub-electrodes and a plurality of fourth sub-electrodes, and further comprise a plurality of second wires for electrically connecting two adjacent ones of the third and the fourth sub-electrodes. ### Claim 5 (depends on 2) The touch panel according to claim 2, wherein the cover lens at least comprises a first region having a first thickness and a second region having a second thickness, the first thickness is larger than the second thickness, the first region of the cover lens covers the first sub-electrodes, and the second region of the cover lens covers the second sub-electrodes. ### Claim 6 (depends on 2) The touch panel according to claim 2, wherein the cover lens at least comprises a first region having a first thickness and a second region having a second thickness, the first thickness is larger than the second thickness, a first spacing is formed between two adjacent first sub-electrodes covered by the first region of the cover lens, a second spacing is formed between two adjacent second sub-electrodes covered by the second region of the cover lens, and the first spacing is smaller than the second spacing. ### Claim 7 (depends on 6) The touch panel, wherein according to claim 6, the second sensing electrodes comprise a plurality of third sub-electrodes and a plurality of fourth sub-electrodes, a third spacing is formed between two adjacent third sub-electrodes covered by the first region of the cover lens, a fourth spacing is formed between two adjacent fourth sub-electrodes covered by the second region of the cover lens, and the third spacing is smaller than the fourth spacing. ### Claim 8 (depends on 1) The touch panel according to claim 1, wherein the first sensing electrodes comprise at least one first sub-electrode and at least one second sub-electrode, the at least one first sub-electrode has a plurality of first openings, the at least one second sub-electrode has a plurality of second openings, and a size of each first opening is larger than a size of each second opening. ### Claim 9 (depends on 8) The touch panel according to claim 8, wherein the cover lens at least comprises a first region having a first thickness and a second region having a second thickness, the first thickness is larger than the second thickness, the first region of the cover lens covers the at least one first sub-electrode, and the second region of the cover lens covers the at least one second sub-electrode. ### Claim 10 (depends on 8) The touch panel according to claim 8, wherein the first openings and/or the second openings are rectangular, circular or polygonal. ### Claim 11 (depends on 1) The touch panel according to claim 1, wherein the first and the second sensing electrodes are rectangular or rhombic. ### Claim 12 (depends on 1) The touch panel according to claim 1, wherein each first sensing electrode is a strip having an arced edge, and a width of each first sensing electrode is related to a curvature of the arced edge. ### Claim 13 (depends on 12) The touch panel according to claim 12, wherein the cover lens has a central region, the non-uniform thickness of the cover lens gradually decreases from the central region towards a second region, a part of each first sensing electrode corresponding to the central region of the cover lens has a first arc, another part of each first sensing electrode corresponding to the second region of the cover lens has a second arc, and a curvature of the first arc is smaller than a curvature of the second arc. ### Claim 14 (depends on 1) The touch panel according to claim 1, wherein each first sensing electrode is a strip whose width corresponds to the non-uniform thickness of the cover lens. ### Claim 15 (depends on 14) The touch panel according to claim 14, wherein the cover lens has a central region and a second region, the non-uniform thickness of the cover lens gradually decreases from the central region towards the second region, the strip has a first width and a second width, the first width is larger than the second width, the central region covers the second width of the strip, and the second region covers the first width of the strip. ### Claim 16 (depends on 1) The touch panel according to claim 1, wherein the cover lens has a central region and a second region, the non-uniform thickness of the cover lens gradually decreases from the central region towards the second region, and the surface area of each first sensing electrode gradually increases from the part corresponding to the central region towards the part corresponding to the second region. ### Claim 17 (depends on 16) The touch panel according to claim 16, wherein a spacing of the first sensing electrodes gradually increase from a part corresponding to the central region towards a part corresponding to the second region. ### Claim 18 (depends on 1) The touch panel according to claim 1, wherein the first sensing electrodes are rhombic or hexagonal, and the second sensing electrodes are rhombic or hexagonal.