# US 8,784,938 B2 · Method for fabricating functional film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,938 B2 - Document ID: US8784938B2 - Status: Granted - Kind: B2 - Application number: 12/794,906 - Filed: 2010-06-07 - Published: 2010-12-09 - Granted: 2014-07-22 - Earliest claimed: 2009-06-08 - Assignees: Panasonic Corporation - Applicants: Naoki Suzuki; Takao Nagumo; Hidehiro Yoshida; Hiroshi Hayata; Masahiro Muro - Inventors: Naoki Suzuki; Takao Nagumo; Hidehiro Yoshida; Hiroshi Hayata; Masahiro Muro - Web page: https://patentgrep.com/patent/US8784938B2 ## CPC - B41J 2/155: for line printing - B41J 2/2139: {Compensation for malfunctioning nozzles creating dot place or dot size errors (generating single droplets or particles on demand by pressure, e.g. electromechanical transducers B41J2/045)} - B41J 2/2146: {for line print heads} - H10K 71/135: {using ink-jet printing} - B41J 2202/09: Ink jet technology used for manufacturing optical filters - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A functional-film fabricating method includes applying a coating by ejecting droplets of functional liquid from plural nozzles to ejection areas for forming a functional film which are surrounded by bounded areas having a liquid repellent property, during a single scanning. In applying the coating, when there is a non-ejectable nozzle out of plural nozzles to be used for applying a coating to a single ejection area, the amount of droplets of the functional liquid ejected from another ejectable nozzle to be used for applying a coating to this ejection area is larger than that of cases where there is no non-ejectable nozzle. ## Claims ### Claim 1 A method for fabricating an organic light-emitting layer as a functional-film, comprising: checking ejection/non-ejection states of a plurality nozzles in an ink jet head; and ejecting droplets of functional liquid from the plurality of nozzles to an ejection area during a single scanning of the ink jet head, the plurality of nozzles being arranged in rows with a predetermined pitch, and the ejection area being defined by being sandwiched between two or more parallel line-shaped banks, and being surrounded by bounded areas having a liquid repellent property, wherein, row areas defined by the line-shaped banks include a plurality of pixel areas disposed at constant intervals, said checking ejection/non-ejection states includes detecting at least one non-ejectable nozzle out of the plurality of nozzles, and said ejecting droplets of the functional liquid includes increasing the amount of droplets of the functional liquid ejected from an ejectable nozzle near the at least one non-ejectable nozzle relative to the amount of droplets of the liquid ejected from the ejectable nozzle when there is no non-ejectable nozzle so as to apply a coating to the ejection area, said increasing the amount of droplets of the functional liquid corresponding to the number of non-ejectable nozzles detected, and wherein the at least one non-ejectable nozzle includes a plurality of non-ejectable nozzles and the ejectable nozzle is an ejectable nozzle of a plurality of ejectable nozzles, and the ejection frequency at which the plurality of ejectable nozzles apply a coating of the functional liquid for complementing for the non-ejectable nozzles is equal to or more than twice the ejection frequency before the complementing. ### Claim 2 (depends on 1) The method for fabricating an organic light-emitting layer as a functional film according to claim 1, wherein said checking includes detecting that the at least one non-ejectable nozzle is a first non-ejectable nozzle of three or more continuous non-ejectable nozzles, out of the nozzles, and wherein the ejectable nozzle is a first ejectable nozzle, and is adjacent to the first non-ejectable nozzle at a first end of the three or more continuous non-ejectable nozzles, and a second ejectable nozzle is adjacent to a second non-ejectable nozzle at a second end of the three or more continuous non-ejectable nozzles, said first and second ejectable nozzles applying a coating of the functional liquid, with an amount of droplets of the functional liquid from the first and second ejectable nozzles corresponding to the number of the three or more continuous non-ejectable nozzles. ### Claim 3 (depends on 1) The method for fabricating an organic light-emitting layer as a functional film according to claim 1, wherein the ejectable nozzle is an ejectable nozzle of a plurality of ejectable nozzles, and one of the plurality of ejectable nozzles has a droplet accretion position within an area between the pixel areas, and applies a coating of the functional liquid, with an amount of droplets of the functional liquid from the one of the plurality of ejectable nozzles corresponding to the number of non-ejectable nozzles. ### Claim 4 (depends on 1) The method for fabricating an organic light-emitting layer as a functional film according to claim 1, wherein the ejectable nozzle is an ejectable nozzle of a plurality of ejectable nozzles, and when the droplet accretion positions of the plurality of non-ejectable nozzles are in the pixel areas, one of the plurality of the ejectable nozzles has a droplet accretion position within an area between adjacent pixel areas and applies a coating of the functional liquid, with an amount of droplets of the functional liquid corresponding to the number of the plurality of non-ejectable nozzles, and when the plurality of non-ejectable nozzles is disposed in areas between adjacent pixel areas, one of the plurality of ejectable nozzles near the plurality of non-ejectable nozzles applies a coating of the functional liquid, with an amount of droplets of the functional liquid corresponding to the number of the plurality of non-ejectable nozzles. ### Claim 5 (depends on 1) The for fabricating an organic light-emitting layer as a functional film method according to claim 1, wherein the ejectable nozzle applies the coating by increasing the number of droplets from the ejectable nozzle by the same number as the number of the plurality of non-ejectable nozzles. ### Claim 6 (depends on 1) The method for fabricating an organic light-emitting layer as a functional film according to claim 1, wherein the functional film is an organic light-emitting layer in an organic electro-luminescence display.