# US 11,444,262 B2 · Display panel and display device having a non-planar substrate surface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,262 B2 - Document ID: US11444262B2 - Status: Granted - Kind: B2 - Application number: 16/755,180 - Filed: 2019-10-15 - Published: 2021-07-15 - Granted: 2022-09-13 - Earliest claimed: 2018-11-19 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Beijing BOE Technology Development Co., Ltd. - Applicants: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Shilong Wang; Zhiliang Jiang; Li Song - Web page: https://patentgrep.com/patent/US11444262B2 ## CPC - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/873: {Encapsulations} - H10K 77/111: {Flexible substrates} - H10F 77/707: {of the substrates or of layers on substrates, e.g. textured ITO layer on a glass substrate} - H10H 20/82: Roughened surfaces, e.g. at the interface between epitaxial layers - H10H 20/821: of the light-emitting regions, e.g. non-planar junctions - H10K 77/10: Substrates, e.g. flexible substrates - H10K 2102/00: Constructional details relating to the organic devices covered by this subclass - H10K 2102/311: {Flexible OLED} - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A display panel including a display area and a non-display area surrounding the display area, wherein the non-display area includes: a substrate, at least a part of a surface of the substrate being non-planar; and an inorganic layer conformally located on one side of the substrate and in contact with the at least a part of the surface. ## Claims ### Claim 1 A display panel, comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises: a substrate, at least a part of a surface of the substrate being non-planar; an inorganic layer conformally located on one side of the substrate and in contact with the at least a part of the surface; at least one dam located on the one side of the inorganic layer away from the substrate; and an encapsulation layer located on one side of the inorganic layer away from the substrate, wherein a part of the surface of the substrate not covered by the encapsulation layer is non-planar, and the encapsulation layer covers the at least one dam and is in contact with a part of the inorganic layer. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein at least a part of a surface of the part of the inorganic layer in contact with the encapsulation layer is non-planar. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein the at least one dam comprises a first dam and a second dam located on one side of the first dam away from the display area, and a surface of a part of the inorganic layer located between the first dam and the second dam is non-planar. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein the second dam has a height greater than a height of the first dam. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the at least a part of the surface defines at least one of a protrusion or a recess. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein the substrate comprises a first flexible substrate layer, a second flexible substrate layer, and a barrier layer located between the first flexible substrate layer and the second flexible substrate layer, wherein the at least a part of the surface of the second flexible substrate layer away from the first flexible substrate layer is non-planar. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein the inorganic layer comprises a first inorganic layer in contact with the at least a part of the surface and a second inorganic layer located on one side of the first inorganic layer away from the substrate. ### Claim 8 (depends on 6) The display panel according to claim 6, wherein a material of each of the first flexible substrate layer and the second flexible substrate layer comprises organic material, and a material of the barrier layer comprises inorganic material. ### Claim 9 (depends on 7) The display panel according to claim 7, wherein a material of one of the first inorganic layer and the second inorganic layer comprises silicon nitride, and a material of the other comprises silicon oxynitride. ### Claim 10 (depends on 1) A display device, comprising the display panel according to claim 1. ### Claim 11 A method for manufacturing a display panel, comprising forming a display area and a non-display area surrounding the display area, wherein forming the non-display area comprises: providing a substrate; processing at least a part of a surface of the substrate such that the at least a part of the surface is non-planar; forming an inorganic layer conformally located on one side of the substrate and in contact with the at least a part of the surface; forming at least one dam located on one side of the inorganic layer away from the substrate; and forming an encapsulation layer located on one side of the inorganic layer away from the substrate, wherein a surface of a part of the substrate not covered by the encapsulation layer is non-planar, wherein the encapsulation layer covers the at least one dam and is in contact with a part of the inorganic layer. ### Claim 12 (depends on 11) The method according to claim 11, wherein at least a part of a surface of the part of the inorganic layer in contact with the encapsulation layer is non-planar. ### Claim 13 (depends on 12) The method according to claim 12, wherein the at least one dam comprises a first dam and a second dam located on one side of the first dam away from the display area, and a surface of a part of the inorganic layer located between the first dam and the second dam is non-planar. ### Claim 14 (depends on 13) The method according to claim 13, wherein the second dam has a height greater than a height of the first dam. ### Claim 15 (depends on 11) The method according to claim 11, wherein the at least a part of the surface defines at least one of a protrusion or a recess. ### Claim 16 (depends on 11) The method according to claim 11, wherein the processing comprises at least one of etching or imprinting. ### Claim 17 A display panel, comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises: a substrate, at least a part of a surface of the substrate being non-planar; and an inorganic layer conformally located on one side of the substrate and in contact with the at least a part of the surface, wherein the substrate comprises a first flexible substrate layer, a second flexible substrate layer, and a barrier layer located between the first flexible substrate layer and the second flexible substrate layer, wherein the at least a part of the surface of the second flexible substrate layer away from the first flexible substrate layer is non-planar, and wherein the inorganic layer comprises a first inorganic layer in contact with the at least a part of the surface and a second inorganic layer located on one side of the first inorganic layer away from the substrate. ### Claim 18 (depends on 17) The display panel according to claim 17, wherein a material of each of the first flexible substrate layer and the second flexible substrate layer comprises organic material, and a material of the barrier layer comprises inorganic material. ### Claim 19 (depends on 17) The display panel according to claim 17, wherein a material of one of the first inorganic layer and the second inorganic layer comprises silicon nitride, and a material of the other comprises silicon oxynitride.