# US 10,872,941 B2 · Display panel, manufacture method thereof and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,872,941 B2 - Document ID: US10872941B2 - Status: Granted - Kind: B2 - Application number: 16/518,246 - Filed: 2019-07-22 - Published: 2020-01-23 - Granted: 2020-12-22 - Earliest claimed: 2018-07-20 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Pinfan Wang; Pohsien Wu; Mingche Hsieh - Web page: https://patentgrep.com/patent/US10872941B2 ## CPC - H10K 59/122: Pixel-defining structures or layers, e.g. banks - G03F 7/094: {Multilayer resist systems, e.g. planarising layers} - H10K 59/80522: {combined with auxiliary electrodes} - H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G) ## Abstract A display panel is provided, which includes a substrate, multiple light emitting structures arranged in an array on the substrate, a blocking structure at least arranged in a peripheral region of the substrate, and a cathode layer arranged on the multiple light emitting structures and the blocking structure. The cathode layer is discontinuous at a location corresponding to the blocking structure. ## Claims ### Claim 1 A display panel, comprising: a substrate; a plurality of light emitting structures arranged in an array on the substrate; a blocking structure, at least arranged in a peripheral region of the substrate; and a cathode layer, arranged on the plurality of light emitting structures and the blocking structure, wherein the cathode layer is discontinuous at a location corresponding to the blocking structure, and wherein a material of the blocking structure comprises photoresist. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the blocking structure comprises a first blocking structure arranged in peripheral regions of at least a part of the plurality of light emitting structures. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein an orthographic projection area of a top surface of the blocking structure onto the substrate is larger than an orthographic projection area of a bottom surface of the blocking structure onto the substrate. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein a cross-sectional shape of the blocking structure is an inverted trapezoid or a columnar structure having a mushroom head. ### Claim 5 (depends on 3) The display panel according to claim 3, wherein there is a gap between the cathode layer and a side wall of the blocking structure. ### Claim 6 (depends on 1) The display panel according to claim 1, further comprising a pixel defining layer arranged in peripheral regions of the plurality of light emitting structures, wherein the blocking structure is arranged on the pixel defining layer. ### Claim 7 (depends on 1) The display panel according to claim 1, further comprising a planarization layer and a pixel defining layer, wherein the planarization layer is arranged between the substrate and the light emitting structures, the pixel defining layer is arranged on the planarization layer and in peripheral regions of the plurality of light emitting structures, and the blocking structure is arranged on the planarization layer. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein an opening is provided in a peripheral region of each of at least a part of the plurality of light emitting structures, and the blocking structure comprises a second blocking structure around the opening. ### Claim 9 (depends on 1) The display panel according to claim 1, further comprising a packaging layer arranged on the cathode layer and covering the substrate. ### Claim 10 (depends on 1) A display device, comprising the display panel according to claim 1. ### Claim 11 A display panel, comprising: a substrate; a plurality of light emitting structures arranged in an array on the substrate; a blocking structure, at least arranged in a peripheral region of the substrate; and a cathode layer, arranged on the plurality of light emitting structures and the blocking structure, wherein an orthographic projection area of a top surface of the blocking structure onto the substrate is larger than an orthographic projection area of a bottom surface of the blocking structure onto the substrate, and wherein the cathode layer is in contact with a side wall of the blocking structure. ### Claim 12 A method for manufacturing a display panel, comprising: forming a plurality of light emitting structures in an array on a substrate; forming a blocking structure, wherein the blocking structure is at least arranged in a peripheral region of the substrate; and forming a cathode layer on the plurality of light emitting structures and the blocking structure, wherein the cathode layer is discontinuous at a location corresponding to the blocking structure, and wherein a material of the blocking structure comprises photoresist. ### Claim 13 (depends on 12) The method according to claim 12, wherein the blocking structure comprises a first blocking structure arranged in peripheral regions of at least a part of the plurality of light emitting structures. ### Claim 14 (depends on 12) The method according to claim 12, wherein an orthographic projection area of a top surface of the blocking structure onto the substrate is larger than an orthographic projection area of a bottom surface of the blocking structure onto the substrate. ### Claim 15 (depends on 14) The method according to claim 14, wherein a cross-sectional shape of the blocking structure is an inverted trapezoid or a columnar structure having a mushroom head. ### Claim 16 (depends on 14) The method according to claim 14, wherein the cathode layer is in contact with a side wall of the blocking structure or there is a gap between the cathode layer and the side wall of the blocking structure. ### Claim 17 (depends on 12) The method according to claim 12, further comprising forming a pixel defining layer, wherein the pixel defining layer is arranged in peripheral regions of the plurality of light emitting structures, and the blocking structure is arranged on the pixel defining layer. ### Claim 18 (depends on 12) The method according to claim 12, further comprising forming a planarization layer and a pixel defining layer, wherein the planarization layer is arranged between the substrate and the light emitting structures, the pixel defining layer is arranged on the planarization layer and in peripheral regions of the plurality of light emitting structures, and the blocking structure is arranged on the planarization layer. ### Claim 19 (depends on 12) The method according to claim 12, wherein an opening is provided in a peripheral region of each of at least a part of the plurality of light emitting structures, and the blocking structure comprises a second blocking structure around the opening.