# US 10,312,298 B2 · Organic light emitting display and method of fabricating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,312,298 B2 - Document ID: US10312298B2 - Status: Granted - Kind: B2 - Application number: 15/457,955 - Filed: 2017-03-13 - Published: 2018-02-01 - Granted: 2019-06-04 - Earliest claimed: 2016-07-29 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Jae-Young Oh - Web page: https://patentgrep.com/patent/US10312298B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/03547: {Touch pads, in which fingers can move on a surface} - G06F 3/044: by capacitive means - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 59/40: OLEDs integrated with touch screens - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - 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 59/1201: {Manufacture or treatment} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Disclosed are an organic light emitting display, which may achieve weight reduction and slimming, and a method of fabricating the same. An encapsulation part of the organic light emitting display includes a plurality of inorganic encapsulation layers and at least one organic encapsulation layer disposed between the inorganic encapsulation layers, and a plurality of touch electrodes disposed on one of the inorganic encapsulation layers and the at least one organic encapsulation layer of the encapsulation part, each touch electrode having electrically independent self capacitance, thereby achieving weight reduction and slimming of the organic light emitting display. ## Claims ### Claim 1 A display device comprising: light emitting devices disposed on a substrate; an encapsulation layer structure disposed on the light emitting devices: a touch sensor comprising: a plurality of touch sensing electrodes disposed on the encapsulation layer structure along a first direction; and a plurality of touch driving electrodes on the encapsulation layer structure and in a same plane as the plurality of touch sensing electrodes, the plurality of touch driving electrodes disposed along the first direction and in parallel with the plurality of touch sensing electrodes; and at least one routing line disposed between the encapsulation layer structure and the touch sensor and connected to the touch sensor, wherein the at least one routing line is running along at least one sidewall of the encapsulation layer structure. ### Claim 2 (depends on 1) The display device of claim 1, wherein the at least one routing line is deposited on the encapsulation layer structure. ### Claim 3 (depends on 1) The display device of claim 1, wherein the encapsulation layer structure is free of an adhesive. ### Claim 4 (depends on 1) The display device of claim 1, wherein at least a portion of the at least one routing line is in physical contact with the at least one sidewall of the encapsulation layer structure. ### Claim 5 (depends on 1) The display device of claim 1 further comprising: a plurality of touch pads disposed in a pad region of the substrate; wherein the at least one routing line running between a respective touch sensor and a respective touch pad is made of the same material. ### Claim 6 (depends on 1) The display device of claim 1, wherein the encapsulation layer structure comprises a plurality of inorganic encapsulation layers and at least one organic encapsulation layer disposed between the inorganic encapsulation layers; wherein the touch sensor is disposed on an inorganic encapsulation layer, which is an uppermost layer of the encapsulation layer structure; and wherein the at least one routing line is disposed on a side and an upper surface of the inorganic encapsulation layer that is the uppermost layer of the encapsulation layer structure. ### Claim 7 (depends on 6) The display device of claim 6, further comprising: a routing pad disposed between the at least one routing line and a touch pad; at least one pad contact hole penetrating at least a portion of the encapsulation layer structure; and a pad connection electrode electrically connecting the routing pad exposed through the pad contact hole to the touch pad. ### Claim 8 (depends on 7) The display device of claim 7, wherein the at least one pad contact hole penetrates at least one of the inorganic encapsulation layers of the encapsulation layer structure. ### Claim 9 (depends on 8) The display device of claim 8, wherein: the pad connection electrode is disposed on the side and the upper surface of the inorganic encapsulation layer that is the uppermost layer of the encapsulation layer structure; and the touch sensor and the at least one routing line are disposed on remaining encapsulation layers other than the inorganic encapsulation layer that is the uppermost layer of the encapsulation layer structure. ### Claim 10 (depends on 7) The display device of claim 7, wherein the at least one pad contact hole penetrates at least one of the plurality of inorganic encapsulation layer that is the uppermost layer of the encapsulation layer structure and the organic encapsulation layer of the encapsulation layer structure. ### Claim 11 (depends on 7) The display device of claim 7, wherein the at least one pad contact hole comprises a plurality of pad contact holes penetrating the encapsulation layer structure. ### Claim 12 (depends on 7) The display device of claim 7, further comprising: a bank; wherein the at least one pad contact hole is arranged to overlap the bank. ### Claim 13 (depends on 1) The display device of claim 1, wherein the touch sensor is formed in a mesh type; wherein the touch sensor includes a transparent conductive layer and a mesh metal layer formed in the mesh type on an upper surface or a lower surface of the transparent conductive layer. ### Claim 14 (depends on 1) The display device of claim 1, wherein the touch pad and the at least one routing line are formed of a first conductive layer having a monolayer structure or a multilayer structure comprising at least one of Ta, Al, Ti, Cu and Mo; wherein the touch sensor is formed of a second conductive layer comprising a transparent conductive oxide; and wherein the transparent conductive oxide comprises an ITO, IZO, IGZO or ZnO-based transparent conductive oxide. ### Claim 15 (depends on 14) The display device according to claim 14, wherein inorganic encapsulation layers are formed of silicon nitride, silicon oxide, silicon oxynitride or aluminum oxide; or wherein organic encapsulation layer is formed of acrylic resin, epoxy resin or a polymeric resin.