# US 2024/0206237 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0206237 A1 - Document ID: US20240206237A1 - Status: Published application - Kind: A1 - Application number: 18/389,061 - Filed: 2023-11-13 - Published: 2024-06-20 - Earliest claimed: 2022-12-14 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: EunYoung Park; SeungHee Nam; YunHo Kook; Jonghan Park; Chaewoon Lee - Web page: https://patentgrep.com/patent/US20240206237A1 ## CPC - H10K 59/122: Pixel-defining structures or layers, e.g. banks - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - H10K 50/813: characterised by their shape - H10K 50/856: comprising reflective means - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/80515: {characterised by their shape} - H10K 59/80518: {Reflective anodes, e.g. ITO combined with thick metallic layers} - H10K 59/878: {comprising reflective means} - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - 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) ## Abstract A display device may include: a substrate including a plurality of sub-pixels, including a first sub-pixel; an insulating layer disposed over the substrate and having a first open area in the first sub-pixel, the insulating layer having a side portion facing the first open area in the first sub-pixel; an anode electrode including a first portion disposed in the first open area and a second portion disposed on the side portion of the insulating layer; an organic layer on the anode electrode; and a cathode electrode on the organic layer. The first open area of the insulating layer may have an uneven outer edge in a plan view. ## Claims ### Claim 1 A display device, comprising: a substrate including a plurality of sub-pixels, including a first sub-pixel; an insulating layer disposed over the substrate and having a first open area in the first sub-pixel, the insulating layer having a side portion facing the first open area in the first sub-pixel; an anode electrode including a first portion disposed in the first open area and a second portion disposed on the side portion of the insulating layer; an organic layer on the anode electrode; and a cathode electrode on the organic layer, wherein the first open area of the insulating layer has an uneven outer edge in a plan view. ### Claim 2 (depends on 1) The display device of claim 1, wherein the uneven outer edge of the first open area of the insulating layer includes an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns in the plan view. ### Claim 3 (depends on 1) The display device of claim 1, wherein: the anode electrode further includes a third portion extending from the second portion and disposed on an upper surface of the insulating layer; and the side portion of the insulating layer is inclined with respect to the upper surface of the insulating layer. ### Claim 4 (depends on 3) The display device of claim 3, further comprising: a transistor disposed over the substrate and under the insulating layer in the first sub-pixel, wherein: the insulating layer further includes a contact hole spaced apart from the first open area; and the anode electrode is connected to the transistor through the contact hole. ### Claim 5 (depends on 1) The display device of claim 1, wherein: the anode electrode, the organic layer, and the cathode electrode constitute a light emitting element of the first sub-pixel; the light emitting element forms a main emission area of the first sub-pixel; the second portion of the anode electrode forms a reflective emission area of the first sub-pixel around the main emission area of the first sub-pixel; and a non-emission area is formed between the main emission area and the reflective emission area. ### Claim 6 (depends on 5) The display device of claim 5, wherein: the second portion of the anode electrode has an uneven shape corresponding to the uneven outer edge of the first open area of the insulating layer; and an outer edge of the reflective emission area has a shape corresponding to the uneven shape of the second portion of the anode electrode. ### Claim 7 (depends on 5) The display device of claim 5, wherein in the plan view: the main emission area has a circular, polygonal, or elliptical shape; an inner edge of the reflective emission area has a shape corresponding to the shape of the main emission area; an outer edge of the reflective emission area has an uneven shape different from the shape of the main emission area and including an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns; and the non-emission area has a shape of a circular, polygonal, or elliptical ring surrounding the main emission area and corresponding to the shape of the main emission area. ### Claim 8 (depends on 5) The display device of claim 5, wherein in the plan view: an outer edge of the reflective emission area has an uneven shape including an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns; and an outer edge of the main emission area has an uneven shape corresponding to the uneven shape of the outer edge of the reflective emission area. ### Claim 9 (depends on 1) The display device of claim 1, further comprising: a bank over the anode electrode and having a second open area exposing an area of the first portion of the anode electrode in the first open area of the insulating layer. ### Claim 10 (depends on 9) The display device of claim 9, wherein: the first open area has a greater width than the second open area and encompasses the second open area in the plan view; and the bank covers the second portion of the anode electrode. ### Claim 11 (depends on 9) The display device of claim 9, wherein an outer edge of the second open area has a different shape from the uneven outer edge of the first open area in the plan view. ### Claim 12 (depends on 11) The display device of claim 11, wherein in the plan view: the uneven outer edge of the first open area includes an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns; and the outer edge of the second open area has a circular, polygonal, or elliptical shape. ### Claim 13 (depends on 9) The display device of claim 9, wherein in the plan view: the uneven outer edge of the first open area includes an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns; and an outer edge of the second open area has an uneven shape corresponding to the uneven outer edge of the first open area. ### Claim 14 (depends on 9) The display device of claim 9, wherein: the bank has a side portion facing the second open area; and the side portion of the bank has a different shape from the side portion of the insulating layer, the side portion of the insulating layer having an uneven shape corresponding to the uneven outer edge of the first open area in the plan view. ### Claim 15 (depends on 9) The display device of claim 9, wherein: the bank has a side portion facing the second open area; the side portion of the insulating layer has an uneven shape corresponding to the uneven outer edge of the first open area in the plan view; and the side portion of the bank has an uneven shape corresponding to the uneven shape of the side portion of the insulating layer. ### Claim 16 (depends on 1) The display device of claim 1, wherein: the plurality of sub-pixels further includes a second sub-pixel; the insulating layer further has another first open area in the second sub-pixel and another side portion facing the other first open area in the second sub-pixel; and the other first open area of the insulating layer in the second sub-pixel has a differently shaped outer edge from the uneven outer edge of the first open area of the insulating layer in the first sub-pixel in the plan view. ### Claim 17 (depends on 1) The display device of claim 1, wherein: the plurality of sub-pixels further includes a second sub-pixel; the insulating layer further has another first open area in the second sub-pixel and another side portion facing the other first open area in the second sub-pixel; and the other first open area of the insulating layer in the second sub-pixel has an uneven outer edge having a shape corresponding to a shape of the uneven outer edge of the first open area of the insulating layer in the first sub-pixel in the plan view. ### Claim 18 (depends on 17) The display device of claim 17, wherein in the plan view: the second sub-pixel has a different size from the first sub-pixel; and the other first open area in the second sub-pixel has a different size from the first open area in the first sub-pixel. ### Claim 19 A display device, comprising: a substrate including a plurality of sub-pixels configured to emit light, the plurality of sub-pixels including a first sub-pixel; an insulating layer over the substrate; an anode electrode on the insulating layer; an organic layer on the anode electrode; and a cathode electrode on the organic layer, wherein the anode electrode, the organic layer, and the cathode electrode in the first sub-pixel in combination are configured to emit light, and wherein the first sub-pixel includes an emission area with an uneven outer edge in a plan view. ### Claim 20 (depends on 19) The display device of claim 19, wherein the uneven outer edge of the emission area of the first sub-pixel includes an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns in the plan view. ### Claim 21 (depends on 19) The display device of claim 19, wherein the emission area of the first sub-pixel includes: a main emission area; and a reflective emission area around the main emission area. ### Claim 22 (depends on 21) The display device of claim 21, wherein a non-emission area is formed between the main emission area and the reflective emission area, the non-emission area having a shape corresponding to the shape of the main emission area. ### Claim 23 (depends on 21) The display device of claim 21, wherein in the plan view: the main emission area has a circular, polygonal, or elliptical shape; an inner edge of the reflective emission area has a shape corresponding to the shape of the main emission area; and an outer edge of the reflective emission area has an uneven shape different from the shape of the main emission area and including an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns. ### Claim 24 (depends on 21) The display device of claim 21, wherein in the plan view: an outer edge of the reflective emission area has an uneven shape including an iris flower pattern, a wavy pattern, a zigzag pattern, or a plurality of polygonal patterns; and an outer edge of the main emission area has an uneven shape corresponding to the uneven shape of the outer edge of the reflective emission area. ### Claim 25 (depends on 19) The display device of claim 19, wherein: the plurality of sub-pixels further includes a second sub-pixel; and the second sub-pixel includes an emission area having a differently shaped outer edge from the uneven outer edge of the emission area in the first sub-pixel in the plan view. ### Claim 26 (depends on 19) The display device of claim 19, wherein: the plurality of sub-pixels further includes a second sub-pixel having an emission area; the emission area of the second sub-pixel includes an uneven outer edge having a shape corresponding to a shape of the uneven outer edge of the emission area in the first sub-pixel in the plan view, and the emission area of the second sub-pixel has a different size from the emission area of the first sub-pixel.