# US 9,437,143 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,437,143 B2 - Document ID: US9437143B2 - Status: Granted - Kind: B2 - Application number: 14/938,039 - Filed: 2015-11-11 - Published: 2016-03-03 - Granted: 2016-09-06 - Earliest claimed: 2012-04-23 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Takayuki Suzuki; Hiroyuki Abe; Masahiro Maki; Mitsuru Goto - Web page: https://patentgrep.com/patent/US9437143B2 ## CPC - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/0418: {for error correction or compensation, e.g. based on parallax, calibration or alignment} - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/133528: {Polarisers} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/044: by capacitive means - G09G 3/36: using liquid crystals - G09G 3/3655: {Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors} - G02F 1/133302: {Rigid substrates, e.g. inorganic substrates} - G02F 2201/121: common or background - G02F 2201/123: pixel - G02F 2202/104: poly-Si - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G09G 2300/0426: Layout of electrodes and connections - G09G 2320/0219: Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling - G09G 2320/0626: for control of overall brightness - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display device includes pixel electrodes formed in an image display area of a substrate, a common electrode formed in the image display area, inside signal lines formed inside the image display area, and electrically connected to the pixel electrodes, outside signal lines formed outside the image display area, and electrically connected to the inside signal lines, and a common line formed inside and outside the image display area, and electrically connected to the common electrode. An image is displayed under a control of a light using an electric field developed between the pixel electrodes and the common electrode. A coupling capacitance is formed between the inside signal lines and the common electrode. The outside signal lines each include a first portion, and a second portion higher in electric resistance than the first portion and the inside signal lines. ## Claims ### Claim 1 A display device comprising: a substrate having an image display area; pixel electrodes formed in the image display area of the substrate; a common electrode formed in the image display area of the substrate; inside signal lines formed inside the image display area of the substrate, and electrically connected to the pixel electrodes; outside signal lines formed outside the image display area of the substrate, and electrically connected to the inside signal lines; a common line formed inside and outside the image display area of the substrate, and electrically connected to the common electrode, wherein an image is displayed under a control of a light using an electric field developed between the pixel electrodes and the common electrode, wherein a coupling capacitance is formed between the inside signal lines and the common electrode, wherein the outside signal lines includes a first portion, and a second portion that is higher in electric resistance than the first portion, wherein the second portion has a bend, and wherein a layer of the first portion is different from a layer of the second portion. ### Claim 2 (depends on 1) The display device according to claim 1, further comprising: an insulating film that covers the second portion, wherein a plurality of contact holes from which the second portion is exposed are formed in the insulating film at intervals in a longitudinal direction of the second portion. ### Claim 3 (depends on 2) The display device according to claim 2, further comprising: a conductive layer formed on the insulating film so as to be electrically connected to the second portion by two or more of the contact holes, wherein the conductive layer is made of a material lower in electric resistivity than a material of the second portion. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the second portion is made of polysilicon. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the second portion extends to draw a straight line. ### Claim 6 A display device comprising: a substrate having an image display area; pixel electrodes formed in the image display area of the substrate; a common electrode formed in the image display area of the substrate; inside signal lines formed inside the image display area of the substrate, and electrically connected to the pixel electrodes; outside signal lines formed outside the image display area of the substrate; switching elements each of which switches electric continuity and discontinuity between the inside signal lines and the output signal lines; control lines that input a control signal to the switching elements; and a common line formed inside and outside the image display area of the substrate, and electrically connected to the common electrode, wherein an image is displayed under a control of a light using an electric field developed between the pixel electrodes and the common electrode, wherein a coupling capacitance is formed between the inside signal lines and the common electrode, wherein the control lines each include a first portion, and a second portion higher in electric resistance than the first portion, and wherein the first portion has a width wider than that of the second portion, and wherein a layer of the first portion is different from a layer of the second portion. ### Claim 7 (depends on 6) The display device according to claim 6, further comprising an insulating film that covers the second portion, wherein a plurality of contact holes from which the second portion is exposed is formed in the insulating film at intervals in a longitudinal direction of the second portion. ### Claim 8 (depends on 7) The display device according to claim 7, further comprising a conductive layer formed on the insulating film so as to be electrically connected to the second portion by two or more of the contact holes, wherein the conductive layer is made of a material lower in electric resistivity than a material of the second portion. ### Claim 9 (depends on 6) The display device according to claim 6, wherein the second portion is made of polysilicon. ### Claim 10 (depends on 6) The display device according to claim 6, wherein the second portion extends to draw a straight line.