# US 2019/0319218 A1 · Display device and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0319218 A1 - Document ID: US20190319218A1 - Status: Published application - Kind: A1 - Application number: 16/473,274 - Filed: 2017-09-28 - Published: 2019-10-17 - Earliest claimed: 2017-09-28 - Assignees: Sharp Kabushiki Kaisha - Applicants: Sharp Kabushiki Kaisha - Inventors: Jumpei TAKAHASHI; Tohru SONODA; Yoshinobu MIYAMOTO - Web page: https://patentgrep.com/patent/US20190319218A1 ## CPC - H10K 59/873: {Encapsulations} - G09F 9/30: in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) - H05B 33/04: Sealing arrangements {, e.g. against humidity} - H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 71/40: Thermal treatment, e.g. annealing in the presence of a solvent vapour - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract In a sealing film in which a first inorganic film, an organic film, and a second inorganic film are layered in that order, a high-wettability region having a relatively high wettability with respect to droplets configured to become the organic film, and a low-wettability region having a relatively low wettability with respect to the droplets, are arranged in an alternating manner on an organic film side surface of the first inorganic film. ## Claims ### Claim 1 A display device comprising: a base substrate in which a display region, in which an image is displayed, and a frame region located in the periphery of the display region are defined; a light emitting element provided in the display region of the base substrate; and a sealing film in which a first inorganic film, an organic film, and a second inorganic film are layered in that order, the sealing film being provided in the display region and the frame region, the sealing film covering the light emitting element, wherein a high-wettability region having a relatively high wettability with respect to droplets configured to become the organic film, and a low-wettability region having a relatively low wettability with respect to the droplets, are arranged in an alternating manner on an organic film side surface of the first inorganic film. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the high-wettability region is formed by irradiation with ultraviolet light. ### Claim 3 (depends on 1) The display device according to claim 1, wherein another inorganic film that is different from the first inorganic film is provided in the high-wettability region. ### Claim 4 (depends on 1) The display device according to claim 1, wherein a damming wall that contacts a circumferential end part of the sealing film is provided in the frame region, the damming wall surrounding the light emitting element, and the high-wettability region and the low-wettability region are arranged in an alternating manner on an inner side of the damming wall. ### Claim 5 (depends on 4) The display device according to claim 4, wherein a surface of the first inorganic film provided above the damming wall has the same wettability as the low-wettability region with respect to the droplets configured to become the organic film. ### Claim 6 (depends on 1) The display device according to claim 1, wherein a damming wall that contacts a circumferential end part of the sealing film is provided in the frame region, the damming wall surrounding the light emitting element, and a surface of the first inorganic film provided above the damming wall has the same wettability as the low-wettability region with respect to the droplets configured to become the organic film. ### Claim 7 (depends on 6) The display device according to claim 6, wherein a surface of the first inorganic film provided in the display region is irradiated with ultraviolet light. ### Claim 8 (depends on 6) The display device according to claim 6, wherein another inorganic film that is different from the first inorganic film is provided on a surface of the first inorganic film provided in the display region. ### Claim 9 (canceled) ### Claim 10 (depends on 1) The display device according to claim 1, wherein the light emitting element is an organic EL element. ### Claim 11 A method of manufacturing a display device, the method comprising: forming a light emitting element on a base substrate; and forming a sealing film covering the light emitting element, wherein the forming of the sealing film includes forming a first inorganic film covering the light emitting element, forming an organic film by applying an organic film upon the first inorganic film, and forming a second inorganic film covering the organic film, and in the forming of the first inorganic film, a high-wettability region having a relatively high wettability with respect to droplets configured to become the organic film, and a low-wettability region having a relatively low wettability with respect to the droplets, are formed on the first inorganic film alternately along a direction in which the organic film is applied in the forming of the organic film. ### Claim 12 (depends on 11) The method of manufacturing a display device according to claim 11, wherein in the forming of the first inorganic film, the high-wettability region and the low-wettability region are formed orthogonal to the direction in which the organic film is applied in the forming of the organic film. ### Claim 13 (depends on 11) The method of manufacturing a display device according to claim 11, wherein in the forming of the first inorganic film, the high-wettability region is formed by irradiating a surface of the first inorganic film with ultraviolet light. ### Claim 14 (depends on 13) The method of manufacturing a display device according to claim 13, wherein a damming wall is provided on the base substrate, the damming wall surrounding the light emitting element, and in the forming of the first inorganic film, a surface of the first inorganic film above the damming wall is not irradiated with the ultraviolet light. ### Claim 15 (depends on 11) The method of manufacturing a display device according to claim 11, wherein the light emitting element is an organic EL element.