# US 8,570,300 B2 · Touch detection function display device and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,300 B2 - Document ID: US8570300B2 - Status: Granted - Kind: B2 - Application number: 13/137,019 - Filed: 2011-07-15 - Published: 2012-03-29 - Granted: 2013-10-29 - Earliest claimed: 2010-09-24 - Assignees: Japan Display West Inc. - Applicants: Masanobu Ikeda; Koji Ishizaki; Koji Noguchi; Takayuki Nakanishi - Inventors: Masanobu Ikeda; Koji Ishizaki; Koji Noguchi; Takayuki Nakanishi - Web page: https://patentgrep.com/patent/US8570300B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - 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 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch detection function display device includes a first substrate, a second substrate that includes a plurality of touch detection electrodes provided in parallel and a terminal portion formed along one substrate side and connected to each of the plurality of touch detection electrodes, a display function layer that is interposed between the first substrate and the second substrate, a seal portion that is provided to surround the display function layer to seal the display function layer between the first substrate and the second substrate and a shield electrode that is provided on the first substrate, the second substrate, or both substrates along the substrate side on which the terminal portion is provided. The shield electrode includes an electrode pattern portion that is selectively formed between the first substrate, the second substrate, or both substrates, and the seal portion. ## Claims ### Claim 1 A touch detection function display device comprising: a first substrate; a second substrate that includes a plurality of touch detection electrodes provided in parallel and a terminal portion formed along one substrate side and connected to each of the plurality of touch detection electrodes; a display function layer that is interposed between the first substrate and the second substrate; a seal portion that is provided to surround the display function layer to seal the display function layer between the first substrate and the second substrate; and a shield electrode that is provided on the first substrate, the second substrate, or both substrates along the substrate side on which the terminal portion is provided, wherein the shield electrode includes an electrode pattern portion that is selectively formed between the first substrate, the second substrate, or both substrates, and the seal portion, and wherein the shield electrode is formed of a material with mechanical characteristics similar to those of base portions of the first substrate and the second substrate on which the shield electrode is formed and the seal portion. ### Claim 2 (depends on 1) The touch detection function display device according to claim 1, wherein the display function layer is a liquid crystal layer. ### Claim 3 (depends on 2) The touch detection function display device according to claim 2, wherein a plurality of pixel electrodes are formed on the side of the first substrate opposed to the second substrate, and wherein the plurality of touch detection electrodes and the terminal portion are formed on the opposite side to the side of the second substrate opposed to the first substrate. ### Claim 4 (depends on 3) The touch detection function display device according to claim 3, wherein the plurality of touch detection electrodes extend in a direction intersecting with the substrate side on which the terminal portion is provided, and wherein a plurality of common electrodes extending in a direction intersecting with the plurality of touch detection electrodes are provided on the opposed face of the first substrate or the second substrate to the opposite substrate. ### Claim 5 (depends on 1) The touch detection function display device according to claim 1, wherein the shield electrode is formed at a part other than parts corresponding to four corners of the first substrate and the second substrate. ### Claim 6 (depends on 1) The touch detection function display device according to claim 1, wherein the electrode pattern portion is selectively formed at a position corresponding to the terminal portion. ### Claim 7 (depends on 1) The touch detection function display device according to claim 1, wherein the electrode pattern portion is selectively formed to cross the seal portion. ### Claim 8 (depends on 1) The touch detection function display device according to claim 1, wherein the electrode pattern portion is selectively formed to extend in a direction taken along the seal portion. ### Claim 9 (depends on 1) The touch detection function display device according to claim 1, wherein the first substrate has a control signal line formed to pass through a position corresponding to the seal portion, and wherein the electrode pattern portion is selectively formed at a part corresponding to the control signal line. ### Claim 10 (depends on 9) The touch detection function display device according to claim 9, further comprising a touch detection unit that detects a touch on the basis of the touch detection signal at a touch detection period, wherein the electrode pattern portion is selectively formed at a part corresponding to the control signal line, a signal level of which is changed during the touch detection period. ### Claim 11 (depends on 1) The touch detection function display device according to claim 1, wherein an unevenness portion is selectively formed on the surface of the first substrate, the second substrate, or both substrates, at a part where the electrode pattern portion is not formed between the first substrate, the second substrate, or both substrates, and the seal portion. ### Claim 12 A touch detection function display device comprising: a first substrate; a second substrate that includes a plurality of touch detection electrodes provided in parallel and a terminal portion formed along one substrate side and connected to each of the plurality of touch detection electrodes; a display function layer that is interposed between the first substrate and the second substrate; a seal portion that is provided to surround the display function layer to seal the display function layer between the first substrate and the second substrate; and a shield electrode that is provided on the first substrate, the second substrate, or both substrates along the substrate side on which the terminal portion is provided, wherein the shield electrode includes an electrode pattern portion that is selectively formed between the first substrate, the second substrate, or both substrates, and the seal portion, wherein the display function layer is a liquid crystal layer, wherein a plurality of pixel electrodes are formed on the side of the first substrate opposed to the second substrate, wherein the plurality of touch detection electrodes and the terminal portion are formed on the opposite side to the side of the second substrate opposed to the first substrate, wherein the plurality of touch detection electrodes extend in a direction intersecting with the substrate side on which the terminal portion is provided, wherein a plurality of common electrodes extending in a direction intersecting with the plurality of touch detection electrodes are provided on the opposed face of the first substrate or the second substrate to the opposite substrate, wherein the common electrodes are formed on a layer other than the layer, on which the pixel electrodes are formed, on the face of the first substrate opposed to the second substrate, and wherein the shield electrode is formed on at least one side of the same layer as the layer on which the pixel electrodes are formed and the same layer as the layer on which the common electrodes are formed, on the first substrate. ### Claim 13 A touch detection function display device comprising: a first substrate; a second substrate that includes a plurality of touch detection electrodes provided in parallel and a terminal portion formed along one substrate side and connected to each of the plurality of touch detection electrodes; a display function layer that is interposed between the first substrate and the second substrate; a seal portion that is provided to surround the display function layer to seal the display function layer between the first substrate and the second substrate; and a shield electrode that is provided on the first substrate, the second substrate, or both substrates along the substrate side on which the terminal portion is provided, wherein the shield electrode includes an electrode pattern portion that is selectively formed between the first substrate, the second substrate, or both substrates, and the seal portion, wherein the display function layer is a liquid crystal layer, wherein a plurality of pixel electrodes are formed on the side of the first substrate opposed to the second substrate, wherein the plurality of touch detection electrodes and the terminal portion are formed on the opposite side to the side of the second substrate opposed to the first substrate, wherein the plurality of touch detection electrodes extend in a direction intersecting with the substrate side on which the terminal portion is provided, wherein a plurality of common electrodes extending in a direction intersecting with the plurality of touch detection electrodes are provided on the opposed face of the first substrate or the second substrate to the opposite substrate, wherein the common electrodes are formed on the face of the second substrate opposed to the first substrate, and wherein the shield electrode is formed on at least one side of the same layer as the layer on which the pixel electrodes are formed on the first substrate and the same layer as the layer on which the common electrodes are formed on the second substrate. ### Claim 14 (depends on 1) The touch detection function display device according to claim 1, wherein the mechanical characteristics includes at least a Young's modulus. ### Claim 15 (depends on 1) The touch detection function display device according to claim 1, wherein the shield electrode, the base portion, and the seal portion are formed of an organic material. ### Claim 16 (depends on 1) The touch detection function display device according to claim 1, wherein the shield electrode is also formed on the side intersecting with the substrate side. ### Claim 17 (depends on 1) The touch detection function display device according to claim 1, wherein a fixed potential is applied to the shield electrode.