# US 10,121,837 B2 · Organic light emitting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,837 B2 - Document ID: US10121837B2 - Status: Granted - Kind: B2 - Application number: 15/866,027 - Filed: 2018-01-09 - Published: 2018-06-07 - Granted: 2018-11-06 - Earliest claimed: 2014-05-20 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: ARyoung Lee; KiSoub Yang; HwangUn Seo; YuRi Koh; Jihyun Lee - Web page: https://patentgrep.com/patent/US10121837B2 ## CPC - H10K 59/80515: {characterised by their shape} - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - H10D 86/471: {having different architectures, e.g. having both top-gate and bottom-gate TFTs} - H10D 86/60: wherein the TFTs are in active matrices - 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 - G09G 2300/0809: Several active elements per pixel in active matrix panels - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - H10K 59/80517: {Multilayers, e.g. transparent multilayers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES ## Abstract Disclosed is an organic light emitting device, (OLED) comprising a substrate on which a driving transistor is formed, a bank formed on the substrate providing a boundary for a pixel region, a first electrode formed on the substrate and electrically connected with the driving transistor, the first electrode comprising a first and second cross sectional area both oriented in a direction perpendicular to a vertical direction of the substrate, the first area adjacent to the bank, the second area surrounded by the first area, an organic layer formed on the first electrode within the boundary provided by the bank, and a second electrode formed on the organic layer, wherein during operation of the OLED a first electric field between the first area of the first electrode and the second electrode is greater than a second electric field between the second area of the first electrode and the second electrode. ## Claims ### Claim 1 An organic light emitting device, comprising: a substrate on which a driving transistor is formed; a bank formed on the substrate and providing a boundary for a pixel region; a first electrode formed on the substrate and electrically connected with the driving transistor, the first electrode comprising a first and a second cross sectional area both oriented in a direction perpendicular to a vertical direction of the substrate, the first area adjacent to the bank, the second area surrounded by the first area, the first area of the first electrode is physically separated from the second area of the first electrode by a gap; an organic layer formed on the first electrode within the boundary provided by the bank, at least a portion of the organic layer formed to physically contact the first electrode over the first area; a first insulating layer between at least a portion of the first electrode and the organic layer; and a second electrode formed on the organic layer. ### Claim 2 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first insulating layer is connected to both the first area and the second area of the first electrode. ### Claim 3 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first insulating layer is formed at a step portion the first electrode and the organic layer. ### Claim 4 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first area of the first electrode have two or more layers. ### Claim 5 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first area of the first electrode is larger than that of the second area of the first electrode. ### Claim 6 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first insulating layer is disposed so as to expose a part of a surface of the first area and second area of the first electrode. ### Claim 7 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the first insulating layer comprises at least one from a group consisting of SiOx, SiNx, SiON, Al2O3, TiO2, Ta2O5, HfO2, ZrO2, BST, PZT, benzocyclobutene, and an acryl based resin. ### Claim 8 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the second area does not physically contact the bank. ### Claim 9 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the pixel region is located within the boundary formed by the bank, and wherein the boundary is located above the first area. ### Claim 10 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the bank is formed in a forward tapered shape. ### Claim 11 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the organic layer comprises a curved surface. ### Claim 12 (depends on 1) The organic light emitting device as claimed in claim 1, wherein the second electrode comprises a curved surface.