# US 2019/0245014 A1 · Light emitting diode display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0245014 A1 - Document ID: US20190245014A1 - Status: Published application - Kind: A1 - Application number: 16/250,144 - Filed: 2019-01-17 - Published: 2019-08-08 - Earliest claimed: 2018-02-02 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Gwui-Hyun PARK; Chul Won PARK; Bo Geon JEON; Pil Soon HONG - Web page: https://patentgrep.com/patent/US20190245014A1 ## CPC - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/80521: {characterised by their shape} - H10K 59/1201: {Manufacture or treatment} - H10K 2102/341: {Short-circuit prevention} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A light emitting diode display includes a first electrode, a second electrode overlapping the first electrode, a light emission layer between the first electrode and the second electrode, a pixel defining layer overlapping a part of the first electrode, the pixel defining layer and the light emission layer being spaced apart from each other in a top view, and an inorganic layer between the first electrode and the light emission layer, and an edge of the inorganic layer overlapping the light emission layer and the pixel defining layer. ## Claims ### Claim 1 A light emitting diode display, comprising: a first electrode; a second electrode overlapping the first electrode; a light emission layer between the first electrode and the second electrode; a pixel defining layer overlapping a part of the first electrode, the pixel defining layer and the light emission layer being spaced apart from each other in a top view; and an inorganic layer between the first electrode and the light emission layer, an edge of the inorganic layer overlapping the light emission layer and the pixel defining layer. ### Claim 2 (depends on 1) The light emitting diode display as claimed in claim 1, wherein the light emission layer is surrounded by the first electrode, the inorganic layer, and the second electrode. ### Claim 3 (depends on 1) The light emitting diode display as claimed in claim 1, wherein the edge of the light emission layer and the edge of the pixel defining layer are positioned on one surface of the inorganic layer. ### Claim 4 (depends on 1) The light emitting diode display as claimed in claim 1, wherein the second electrode is in contact with the inorganic layer in a region between the pixel defining layer and the light emission layer. ### Claim 5 (depends on 1) The light emitting diode display as claimed in claim 1, wherein the inorganic layer overlaps with the first electrode. ### Claim 6 (depends on 1) The light emitting diode display as claimed in claim 1, further comprising: a thin film transistor connected with the first electrode; and a planarization layer on the thin film transistor, a part of the inorganic layer being between the pixel defining layer and the planarization layer. ### Claim 7 A light emitting diode display, comprising: a first electrode connected with a thin film transistor; a second electrode overlapping with the first electrode; a light emission layer between the first electrode and the second electrode; a pixel defining layer overlapping the thin film transistor; and an inorganic layer between the first electrode and the light emission layer, wherein the light emission layer and the pixel defining layer are spaced apart from each other, as viewed in a top view, and the inorganic layer and the pixel defining layer are spaced apart from each other, as viewed in a top view. ### Claim 8 (depends on 7) The light emitting diode display as claimed in claim 7, wherein the inorganic layer overlaps with an edge of the light emission layer and an edge of the first electrode. ### Claim 9 (depends on 7) The light emitting diode display as claimed in claim 7, wherein the inorganic layer covers an edge of the first electrode. ### Claim 10 (depends on 7) The light emitting diode display as claimed in claim 7, further comprising a planarization layer on the thin film transistor, the second electrode being in contact with the planarization layer. ### Claim 11 A light emitting diode display, comprising: a first electrode; a second electrode overlapping the first electrode; a light emission layer between the first electrode and the second electrode; an auxiliary layer between the first electrode and the second electrode, and spaced apart from the light emission layer; an inorganic layer between the light emission layer and the first electrode; and a pixel defining layer between the first electrode and the auxiliary layer, wherein the inorganic layer overlaps an edge of the light emission layer and an edge of the auxiliary layer. ### Claim 12 (depends on 11) The light emitting diode display as claimed in claim 11, wherein the auxiliary layer is positioned on a side surface of the pixel defining layer. ### Claim 13 (depends on 11) The light emitting diode display as claimed in claim 11, wherein the light emission layer and the pixel defining layer are spaced apart from each other, as viewed in a top view. ### Claim 14 (depends on 11) The light emitting diode display as claimed in claim 11, wherein the second electrode is in contact with the inorganic layer in a region between the auxiliary layer and the light emission layer. ### Claim 15 (depends on 11) The light emitting diode display as claimed in claim 11, wherein the pixel defining layer and the inorganic layer are spaced apart from each other, as viewed in a top view. ### Claim 16 (depends on 15) The light emitting diode display as claimed in claim 15, wherein the first electrode is in contact with the auxiliary layer in a region between the pixel defining layer and the inorganic layer. ### Claim 17 (depends on 11) The light emitting diode display as claimed in claim 11, wherein one pixel includes at least two auxiliary layers which are spaced apart from each other. ### Claim 18 (depends on 17) The light emitting diode display as claimed in claim 17, wherein the inorganic layer further includes a protrusion between the two auxiliary layers which are spaced apart from each other. ### Claim 19 (depends on 18) The light emitting diode display as claimed in claim 18, wherein the inorganic layer includes at least two protrusions. ### Claim 20 (depends on 18) The light emitting diode display as claimed in claim 18, wherein the protrusion overlaps with the pixel defining layer.