# US 9,040,968 B2 · Method for manufacturing organic electroluminescence device and organic electroluminescence device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,040,968 B2 - Document ID: US9040968B2 - Status: Granted - Kind: B2 - Application number: 14/005,687 - Filed: 2011-04-20 - Published: 2014-01-09 - Granted: 2015-05-26 - Earliest claimed: 2011-04-20 - Assignees: Joled Inc. - Applicants: Tomomi Hiraoka; Yasuo Segawa - Inventors: Tomomi Hiraoka; Yasuo Segawa - Web page: https://patentgrep.com/patent/US9040968B2 ## CPC - H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 71/621: {Providing a shape to conductive layers, e.g. patterning or selective deposition} - H10K 59/805: {Electrodes} - H10K 71/861: {Repairing} - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A method for manufacturing an organic electroluminescence device includes: preparing the organic electroluminescence device that includes a lower electrode, an organic layer including a light-emitting layer and formed on the lower electrode, an upper electrode formed on the organic layer, and an encapsulating layer formed on the upper electrode, and has a part in which the lower electrode and the upper electrode are shorted; and forming a mixed layer in which a constituent material of the upper electrode and at least one of constituent materials of the organic layer and the thin-film encapsulating layer which are adjacent to the upper electrode are mixed, by irradiating at least one of the shorted part and a region around the shorted part with an ultrashort pulse laser. ## Claims ### Claim 1 A method for manufacturing an organic electroluminescence device, comprising: preparing an organic electroluminescence device that has a shorted part and includes a lower electrode, an organic layer formed on the lower electrode, an upper electrode formed on the organic layer, and an encapsulating layer formed on the upper electrode, the shorted part being a part in which the lower electrode and the upper electrode are shorted, the organic layer including a light-emitting layer; and forming a mixed layer by irradiating at least one of the shorted part and a region around the shorted part with a laser, the mixed layer being a layer in which a constituent material of the upper electrode and at least one of (i) a constituent material of the organic layer and (ii) a constituent material of the encapsulating layer are mixed. ### Claim 2 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein the mixed layer is formed at least at a position corresponding to the upper electrode which has not been irradiated with the laser. ### Claim 3 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein the upper electrode includes a metal or a metal oxide, and a proportion of metal atoms in the mixed layer is lower than a proportion of metal atoms in the upper electrode which has not been irradiated with the laser. ### Claim 4 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein a proportion of carbon atoms in the mixed layer is higher than a proportion of carbon atoms in the upper electrode which has not been irradiated with the laser. ### Claim 5 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein the encapsulating layer includes a material containing nitrogen, and a proportion of nitrogen atoms in the mixed layer is higher than a proportion of nitrogen atoms in the upper electrode which has not been irradiated with the laser. ### Claim 6 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein the mixed layer includes a cavity. ### Claim 7 (depends on 6) The method for manufacturing an organic electroluminescence device according to claim 6, wherein at least one of (i) the constituent material of the organic layer and (ii) the constituent material of the encapsulating layer is present in a part of the cavity. ### Claim 8 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein a sheet resistance value of the mixed layer is 1 Mega-ohm per square or more. ### Claim 9 (depends on 1) The method for manufacturing an organic electroluminescence device according to claim 1, wherein the laser is an ultrashort pulse laser. ### Claim 10 (depends on 9) The method for manufacturing an organic electroluminescence device according to claim 9, wherein the ultrashort pulse laser has a pulse width of 100 fs to 20 ps. ### Claim 11 (depends on 9) The method for manufacturing an organic electroluminescence device according to claim 9, wherein the laser has a wavelength of 900 to 2,500 nm. ### Claim 12 An organic electroluminescence device comprising: a lower electrode; an organic layer including a light-emitting layer and formed on the lower electrode; an upper electrode formed on the organic layer; an encapsulating layer formed on the upper electrode; and a mixed layer formed by laser irradiation and in which a constituent material of the upper electrode and at least one of (i) a constituent material of the organic layer and (ii) a constituent material of the encapsulating layer are mixed. ### Claim 13 (depends on 12) The organic electroluminescence device according to claim 12, wherein the mixed layer is formed at least at a position corresponding to the upper electrode which has not been irradiated with the laser. ### Claim 14 (depends on 12) The organic electroluminescence device according to claim 12, wherein the upper electrode includes a metal or a metal oxide, and a proportion of metal atoms in the mixed layer is lower than a proportion of metal atoms in the upper electrode. ### Claim 15 (depends on 12) The organic electroluminescence device according to claim 12, wherein a proportion of carbon atoms in the mixed layer is higher than a proportion of carbon atoms in the upper electrode. ### Claim 16 (depends on 12) The organic electroluminescence device according to claim 12, wherein the encapsulating layer includes a material containing nitrogen, and a proportion of nitrogen atoms in the mixed layer is higher than a proportion of nitrogen atoms in the upper electrode. ### Claim 17 (depends on 12) The organic electroluminescence device according to claim 12, wherein the mixed layer includes a cavity. ### Claim 18 (depends on 17) The organic electroluminescence device according to claim 17, wherein at least one of (i) the constituent material of the organic layer and (ii) the constituent material of the encapsulating layer is present in a part of the cavity. ### Claim 19 (depends on 12) The organic electroluminescence device according to claim 12, wherein a sheet resistance value of the mixed layer is 1 Mega-ohm per square or more.