# US 10,770,518 B2 · OLED-integrated touch sensor and OLED display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,518 B2 - Document ID: US10770518B2 - Status: Granted - Kind: B2 - Application number: 15/992,367 - Filed: 2018-05-30 - Published: 2018-12-06 - Granted: 2020-09-08 - Earliest claimed: 2017-05-30 - Assignees: Dongwoo Fine-Chem Co., Ltd. - Applicants: Dongwoo Fine-Chem Co., Ltd. - Inventors: Byung Jin Choi; Woo Hyun Bae - Web page: https://patentgrep.com/patent/US10770518B2 ## 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} - H10K 50/11: characterised by the electroluminescent [EL] layers - H10K 59/40: OLEDs integrated with touch screens - H10K 59/8051: {Anodes} - H10K 59/8052: {Cathodes} - H10K 59/873: {Encapsulations} - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An OLED-integrated touch sensor includes an organic light emitting diode (OLED) device, and a touch electrode on a surface of the OLED device. The touch electrode includes a driving electrode formed on one surface of a base layer and a receiving electrode formed on an opposing surface of the base layer relative to the one surface. The touch electrode is combined with the OLED device such that the driving electrode faces the surface of the OLED device. ## Claims ### Claim 1 An organic light emitting diode (OLED)-integrated touch sensor, comprising: an organic light emitting diode (OLED) device; and a touch electrode on a surface of the OLED device, the touch electrode including a driving electrode formed on one surface of a base layer and a receiving electrode formed on an opposing surface of the base layer relative to the one surface, wherein the touch electrode is combined with the OLED device such that the driving electrode faces the surface of the OLED device; the OLED device includes a display region and a non-display region, and the touch electrode is formed on at least one of the display region and the non-display region; and the OLED device includes an anode, an organic layer including an organic emitting layer, a cathode, an encapsulation layer and a planarization layer which are sequentially formed, and the planarization layer includes a refractive index matching layer. ### Claim 2 (depends on 1) The OLED-integrated touch sensor of claim 1, wherein the encapsulation layer includes an organic layer or an organic-inorganic hybrid layer. ### Claim 3 (depends on 1) The OLED-integrated touch sensor of claim 1, wherein the touch electrode is formed only on the non-display region of the OLED device, not on the display region. ### Claim 4 (depends on 1) The OLED-integrated touch sensor of claim 1, wherein the touch electrode is formed only on the display region of the OLED device, not on the non-display region. ### Claim 5 (depends on 1) The OLED-integrated touch sensor of claim 1, wherein at least one of the driving electrode and the receiving electrode includes a multi-layered mesh structure including a metal layer and a metal oxide layer. ### Claim 6 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein the metal layer includes at least one selected from the group consisting of silver, gold, copper, aluminum, platinum, palladium, chromium, titanium, tungsten, niobium, tantalum, vanadium, calcium, iron, manganese, cobalt, nickel, zinc and an alloy thereof. ### Claim 7 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein the metal oxide layer includes at least one selected from the group consisting of indium tine oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), indium tin zinc oxide (ITZO), zinc tin oxide (ZTO), indium gallium oxide (IGO), tin oxide (SnO2) and zinc oxide (ZnO). ### Claim 8 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein a thickness of the metal oxide layer is in a range from 5 nm to about 200 nm. ### Claim 9 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein a refractive index of the metal oxide layer at a wavelength of 550 nm is in a range from 1.7 to 2.2. ### Claim 10 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein a thickness of the metal layer is in a range from 5 nm to about 250 nm. ### Claim 11 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein the touch electrode includes a triple-layered mesh structure that includes a first metal oxide layer, the metal layer and a second metal oxide layer which are sequentially stacked. ### Claim 12 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein the touch electrode includes a mesh pattern having a line width from 1 μm to 7 μm. ### Claim 13 (depends on 5) The OLED-integrated touch sensor of claim 5, wherein the driving electrode includes a mesh electrode having an aperture ratio in a range from 80% to 98%. ### Claim 14 (depends on 1) An OLED display device comprising the OELD-integrated touch sensor of claim 1. ### Claim 15 An organic light emitting diode (OLED)-integrated touch sensor, comprising: an organic light emitting diode (OLED) device; and a touch electrode on a surface of the OLED device, the touch electrode including a driving electrode formed on one surface of a base layer and a receiving electrode formed on an opposing surface of the base layer relative to the one surface, wherein the touch electrode is combined with the OLED device such that the driving electrode faces the surface of the OLED device; and wherein the OLED device includes a display region and a non-display region, and the touch electrode is formed only on the display region of the OLED device, not on the non-display region. ### Claim 16 An organic light emitting diode (OLED)-integrated touch sensor, comprising: an organic light emitting diode (OLED) device; and a touch electrode on a surface of the OLED device, the touch electrode including a driving electrode formed on one surface of a base layer and a receiving electrode formed on an opposing surface of the base layer relative to the one surface, wherein the touch electrode is combined with the OLED device such that the driving electrode faces the surface of the OLED device; and the OLED device includes a display region and a non-display region, and the touch electrode is formed only on the non-display region of the OLED device, not on the display region.