# US 10,481,728 B2 · Display device comprising touch sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,728 B2 - Document ID: US10481728B2 - Status: Granted - Kind: B2 - Application number: 15/798,162 - Filed: 2017-10-30 - Published: 2018-05-03 - Granted: 2019-11-19 - Earliest claimed: 2016-11-02 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Min Soo Kim; Mu Gyeom Kim - Web page: https://patentgrep.com/patent/US10481728B2 ## CPC - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/1345: Conductors connecting electrodes to cell terminals - 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 3/0446: {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} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/40: OLEDs integrated with touch screens - H10K 77/111: {Flexible substrates} - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - 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 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 - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - Y02E 10/549: Organic PV cells - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device includes: a first substrate including a display area including a pixel area and a non-display area adjacent to the display area, the first substrate including a connection pad disposed in the non-display area; and a second substrate opposite to the first substrate, the second substrate including a base substrate including a sensing area corresponding to the display area and a non-sensing area corresponding to the non-display area, and a touch sensor disposed on the base substrate, wherein the touch sensor includes a touch sensing electrode disposed in the sensing area, a touch pad disposed in the non-sensing area, and a sensing line electrically connecting the touch sensing electrode and the touch pad, wherein the non-sensing area of the second substrate is bent such that the connection pad and the touch pad are opposite to each other. ## Claims ### Claim 1 A display device comprising: a first substrate comprising a display area comprising a pixel area and a non-display area adjacent to the display area, the first substrate comprising a connection pad in the non-display area; and a second substrate facing the first substrate, the second substrate comprising a base substrate comprising a sensing area corresponding to the display area and a non-sensing area corresponding to the non-display area, and a touch sensor on the base substrate, wherein the touch sensor comprises a touch sensing electrode in the sensing area, a touch pad in the non-sensing area, and a sensing line electrically connecting the touch sensing electrode and the touch pad, and wherein the non-sensing area of the second substrate is bent such that the connection pad and the touch pad face each other. ### Claim 2 (depends on 1) The display device of claim 1, wherein the touch sensing electrode and the touch pad are on the same surface of the base substrate. ### Claim 3 (depends on 2) The display device of claim 2, further comprising a conductive ball between the connection pad and the touch pad. ### Claim 4 (depends on 2) The display device of claim 2, further comprising a protruding bump protruding toward the connection pad from the touch pad to connect the connection pad and the touch pad. ### Claim 5 (depends on 2) The display device of claim 2, further comprising a conductive adhesive layer between the connection pad and the touch pad. ### Claim 6 (depends on 5) The display device of claim 5, wherein the conductive adhesive layer comprises a conductive paste. ### Claim 7 (depends on 2) The display device of claim 2, wherein the connection pad and the touch pad are in direct contact with each other. ### Claim 8 (depends on 1) The display device of claim 1, further comprising an elastic member between areas of the second substrate, which face each other as the second substrate is bent, to maintain the bent shape of the second substrate. ### Claim 9 (depends on 1) The display device of claim 1, further comprising a polarizing layer on one surface of the second substrate. ### Claim 10 (depends on 9) The display device of claim 9, wherein the polarizing layer is on an outer surface of the second substrate. ### Claim 11 (depends on 1) The display device of claim 1, further comprising a polarizing layer between the first substrate and the second substrate. ### Claim 12 (depends on 1) The display device of claim 1, wherein a through-hole passing through the base substrate is in the non-sensing area, and wherein the touch pad comprises: a first pattern on a surface of the base substrate, on which the touch sensing electrode and the sensing line are located; a second pattern in the through-hole, the second pattern being connected to the first pattern; and a third pattern on a surface opposite to the surface of the base substrate on which the first pattern is located, the third pattern being connected to the second pattern. ### Claim 13 (depends on 12) The display device of claim 12, wherein, when the second substrate is bent, the sensing line and the first pattern face each other, and the connection pad and the third pattern face each other. ### Claim 14 (depends on 13) The display device of claim 13, further comprising a conductive ball between the connection pad and the third pattern. ### Claim 15 (depends on 14) The display device of claim 14, further comprising a conductive ball between the sensing line and the first pattern. ### Claim 16 (depends on 14) The display device of claim 14, wherein the sensing line and the first pattern are in direct contact with each other. ### Claim 17 (depends on 13) The display device of claim 13, further comprising a conductive adhesive layer between the connection pad and the third pattern. ### Claim 18 (depends on 17) The display device of claim 17, further comprising a conductive adhesive layer between the sensing line and the first pattern. ### Claim 19 (depends on 1) The display device of claim 1, wherein a through-hole passing through the base substrate is in the non-sensing area, and wherein the touch pad comprises: a first pattern having a shape in which the sensing line extends; a second pattern in the through-hole, the second pattern being connected to the first pattern; and a third pattern on a surface opposite to the surface of the base substrate on which the first pattern is located, the third pattern being connected to the second pattern. ### Claim 20 (depends on 19) The display device of claim 19, wherein, when the second substrate is bent, the connection pad and the third pattern face each other. ### Claim 21 (depends on 20) The display device of claim 20, further comprising a conductive ball between the connection pad and the third pattern. ### Claim 22 (depends on 20) The display device of claim 20, wherein the connection pad and the third pattern are in direct contact with each other. ### Claim 23 (depends on 20) The display device of claim 20, further comprising a conductive adhesive layer between the connection pad and the third pattern. ### Claim 24 (depends on 20) The display device of claim 20, wherein, when the second substrate is bent, the sensing line and the first pattern face each other, and wherein the display device may further comprises an elastic member between the sensing line and the first pattern. ### Claim 25 (depends on 20) The display device of claim 20, wherein, when the second substrate is bent, the sensing line and the first pattern face each other, and wherein the display device further comprises: a supporting member between the sensing line and the first pattern; and a supporting member adhesive layer between the sensing line and the supporting member and between the first pattern and the supporting member. ### Claim 26 (depends on 1) The display device of claim 1, wherein the touch sensing electrode and the touch pad are on different surfaces of the base substrate, respectively. ### Claim 27 (depends on 1) The display device of claim 1, further comprising a cover layer covering the touch sensing electrode and the sensing line. ### Claim 28 (depends on 1) The display device of claim 1, wherein the second substrate comprises: a flat area; and at least one bending area having the touch pad located therein, the at least one bending area extending from one side of the flat area to be bent. ### Claim 29 (depends on 28) The display device of claim 28, wherein the second substrate comprises two bending areas extending from the one side of the flat area, the two bending areas being spaced apart from each other. ### Claim 30 A display device comprising: a first substrate comprising a display area comprising a pixel area and a non-display area adjacent to the display area, the first substrate comprising a connection pad in the non-display area; and a second substrate facing the first substrate, the second substrate comprising a base substrate comprising a sensing area corresponding to the display area and a non-sensing area corresponding to the non-display area, and a touch sensor on the base substrate, wherein the touch sensor comprises a touch sensing electrode in the sensing area, a touch pad in the non-sensing area, and a sensing line electrically connecting the touch sensing electrode and the touch pad, wherein the non-sensing area of the second substrate is bent such that the connection pad and the touch pad face each other, wherein the touch sensing electrode and the touch pad are on different surfaces of the base substrate, respectively, and wherein the sensing line comprises: a first sensing line on a surface of the base substrate, on which the touch sensing electrode is located; and a second sensing line on a surface of the base substrate, on which the touch pad is located. ### Claim 31 A display device comprising: a first substrate comprising a display area comprising a pixel area and a non-display area adjacent to the display area, the first substrate comprising a connection pad in the non-display area; and a second substrate facing the first substrate, the second substrate comprising a base substrate comprising a sensing area corresponding to the display area and a non-sensing area corresponding to the non-display area, and a touch sensor on the base substrate, wherein the touch sensor comprises a touch sensing electrode in the sensing area, a touch pad in the non-sensing area, and a sensing line electrically connecting the touch sensing electrode and the touch pad, wherein the non-sensing area of the second substrate is bent such that the connection pad and the touch pad face each other, wherein the touch sensing electrode and the touch pad are on different surfaces of the base substrate, respectively, and wherein the sensing line comprises: a first sensing line on a surface of the base substrate, on which the touch sensing electrode is located; and a second sensing line on a surface of the base substrate, on which the touch pad is located, wherein the display device further comprises a metal pattern connecting the first sensing line and the second sensing line, wherein the metal pattern comprises: a first pattern on a surface of the base substrate, on which the first sensing line is located; a second pattern in a through-hole passing through the base substrate, the second pattern being connected to the first pattern; and a third pattern on a surface of the base substrate, on which the second sensing line is located, the third pattern being connected to the second pattern.