# US 10,871,682 B2 · Method for manufacturing display panel, display panel 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 10,871,682 B2 - Document ID: US10871682B2 - Status: Granted - Kind: B2 - Application number: 16/006,021 - Filed: 2018-06-12 - Published: 2019-04-04 - Granted: 2020-12-22 - Earliest claimed: 2017-09-29 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Applicants: BOE Technology Group Co., Ltd.; Beijing BOE Display Technology Co., Ltd. - Inventors: Wei Cao - Web page: https://patentgrep.com/patent/US10871682B2 ## CPC - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - C01B 32/198: Graphene oxide - C09K 19/56: Aligning agents - G02F 1/133723: {Polyimide, polyamide-imide} - G02F 1/133788: {by light irradiation, e.g. linearly polarised light photo-polymerisation} - G03F 7/027: Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (G03F7/075 takes precedence) - G03F 7/2002: {with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image} - G02F 1/133796: {having conducting property} - G02F 1/13398: {Spacer materials; Spacer properties} - G02F 2202/022: polymeric - G02F 2202/16: conductive - G02F 2202/36: Micro- or nanomaterials - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - 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 method for manufacturing a display panel, a display panel and a display device are provided. The method for manufacturing a display panel includes: mixing a liquid crystal material and a spacer preparation material, and injecting them between an array substrate and a color filter substrate which are assembled; performing a UV irradiation on the assembled array substrate and the color film substrate with ultraviolet rays by using a mask plate to polymerize the spacer preparation material to form spacers, the spacers connecting the array substrate and the color film substrate. ## Claims ### Claim 1 A method for manufacturing a display panel, comprising: mixing a liquid crystal material and a spacer preparation material, and injecting them between an array substrate and a color filter substrate which are assembled; performing a UV irradiation on the assembled array substrate and the color film substrate with ultraviolet rays by using a mask plate to polymerize the spacer preparation material to form spacers, the spacers connecting the array substrate and the color film substrate, wherein the spacer is a conductive spacer. ### Claim 2 (depends on 1) The method according to claim 1, wherein after the step of performing a UV irradiation on the assembled array substrate and the color film substrate with ultraviolet rays by using a mask plate, the method further comprises: heat-treating the assembled array substrate and the color filter substrate irradiated by the ultraviolet. ### Claim 3 (depends on 1) The method according to claim 1, wherein the spacer preparation material is a polymerizable monomer doped with a conductive polymer monomer. ### Claim 4 (depends on 3) The method according to claim 3, wherein the polymerizable monomer comprises any one of acetylene-doped acrylic acid, thiophene-doped acrylic acid, pyrrole-doped acrylic acid, and aniline-doped acrylic acid. ### Claim 5 (depends on 3) The method according to claim 3, wherein a mass ratio of the polymerizable monomer in a mixture of the polymerizable monomer and the liquid crystal material is 5% to 10%; and a mass ratio of the conductive polymer monomer in the polymerizable monomer is 10% to 20%. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: forming a conductive alignment film on the array substrate and the color filter substrate, respectively. ### Claim 7 (depends on 6) The method according to claim 6, wherein a material of the conductive alignment film comprises a composite containing at least graphene and polyimide. ### Claim 8 (depends on 7) The method according to claim 7, wherein the composite of graphene and polyimide is prepared by the following steps: preparing graphene oxide, preparing a graphene oxide-polyacrylic acid solution, reducing the graphene oxide-polyacrylic acid solution to obtain a composite containing at least graphene and polyimide. ### Claim 9 (depends on 8) The method according to claim 8, wherein the step of preparing graphene oxide comprises: stirring and mixing concentrated sulfuric acid, graphite powder, K2S2O8 (potassium persulfate), and P2O5 (diphosphorus pentoxide) to obtain a mixture, making the mixture react in a water bath at 80° C., diluting them with water, centrifugalizing a product formed by reacting and diluting, and placing the product processed by centrifugalizing into a vacuum oven and drying it therein, mixing the product processed by drying with concentrated sulfuric acid and KMnO4 (potassium permanganate) in an ice bath and stirring them, then diluting them with water, and in turn stirring them, then adding an appropriate amount of H2O2 aqueous solution (hydrogen peroxide) and centrifugalizing the product to obtain graphene oxide, removing impurities from the graphene oxide by one of washing with hydrochloric acid and water and dialysis, and performing an ultrasonic dispersion. ### Claim 10 (depends on 8) The method according to claim 8, wherein the step of preparing a graphene oxide-polyacrylic acid solution comprises: dissolving graphene oxide and polyacrylic acid in ultrapure water respectively, and performing an ultrasonic dispersion, and mixing the graphene oxide aqueous solution and the polyacrylic acid aqueous solution at a certain ratio and stirring them, and performing an ultrasonic treatment to obtain a uniformly dispersed graphene oxide-polyacrylic acid solution. ### Claim 11 (depends on 8) The method according to claim 8, wherein the step of preparing a graphene oxide-polyacrylic acid solution comprises: dissolving graphene oxide and polyacrylic acid respectively in NMP (N-methyl-2-pyrrolidone) solution, and mixing the graphene oxide NMP solution and the polyacrylic acid NMP solution at a certain ratio and stirring them at a certain temperature to obtain a graphene oxide-polyacrylic acid solution. ### Claim 12 (depends on 8) The method according to claim 8, wherein the step of reducing the graphene oxide-polyacrylic acid solution comprises: reducing graphene oxide in the graphene oxide-polyacrylic acid solution to graphene, and reducing polyacrylic acid in the graphene oxide-polyacrylic acid solution to polyimide, with a chemical reduction or a thermal reduction. ### Claim 13 (depends on 8) The method according to claim 8, wherein the composite containing at least graphene and polyimide further contained unreduced polyacrylic acid.