Patents by Inventor Shinsuke Sofue
Shinsuke Sofue has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7923918Abstract: The present invention provides a reliable, long-life phosphor, or the like, which is prevented from darkening due to aging. A light emitting apparatus has a light emitting element and a phosphor layer. The phosphor layer has a phosphor excited by light from the light emitting element, and a binder which binds the phosphor. The binder is hydroxide oxide gel obtained by curing sol of a hydroxide oxide mixed with sol containing at least one metallic element selected from the group consisting of Al, Y, Gd, Lu, Sc, Ga, In, and B. Transmittance of hydroxide oxide in a gel state is higher than the transmittance in the polycrystal state where the sol-gel reaction is proceeded. In addition, the content of hydroxyl group or water of crystallization in the hydroxide oxide is 10% or less by weight.Type: GrantFiled: March 12, 2004Date of Patent: April 12, 2011Assignee: Nichia CorporationInventors: Hiroto Tamaki, Shinsuke Sofue, Kunihiro Izuno, Junji Takeichi
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Patent number: 7811946Abstract: The present invention provides a semiconductor device having a coating film of a predetermined thickness provided along the circumference of a semiconductor light emitting element, and provide a method for easily manufacturing the semiconductor device. A semiconductor light emitting element 2 that emits blue light is mounted face down on the top face of a pedestal 1, and a coating film 3 containing a YAG fluorescent material 6 that emits yellow light is placed so as to cover the top face and side face of the semiconductor light emitting element 2 and the top face of the pedestal 1. With the semiconductor light emitting element 2 and other elements placed between a first film 8 and a second film 9, the films are laminated in vacuum, thereby to fasten the coating film 3 onto the semiconductor light emitting element 2.Type: GrantFiled: March 27, 2009Date of Patent: October 12, 2010Assignee: Nichia CorporationInventors: Kunihiro Izuno, Shinsuke Sofue
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Patent number: 7745818Abstract: A light emitting device, including a light emitting element, and a resin layer that has been screen printed to coat said light emitting element is provided. The resin layer is formed from a curable silicone resin composition, which includes (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5×103, (ii) a condensation catalyst, (iii) a solvent, and (iv) a finely powdered inorganic filler. The uniformity of the film thickness is excellent, thus resulting in little color irregularities during light emission from the light emitting element.Type: GrantFiled: April 7, 2006Date of Patent: June 29, 2010Assignee: Nichia CorporationInventors: Shinsuke Sofue, Hiroto Tamaki, Kunihiro Izuno
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Publication number: 20090239388Abstract: The present invention provides a semiconductor device having a coating film of a predetermined thickness provided along the circumference of a semiconductor light emitting element, and provide a method for easily manufacturing the semiconductor device. A semiconductor light emitting element 2 that emits blue light is mounted face down on the top face of a pedestal 1, and a coating film 3 containing a YAG fluorescent material 6 that emits yellow light is placed so as to cover the top face and side face of the semiconductor light emitting element 2 and the top face of the pedestal 1. With the semiconductor light emitting element 2 and other elements placed between a first film 8 and a second film 9, the films are laminated in vacuum, thereby to fasten the coating film 3 onto the semiconductor light emitting element 2.Type: ApplicationFiled: March 27, 2009Publication date: September 24, 2009Applicant: Nichia CorporationInventors: Kunihiro Izuno, Shinsuke Sofue
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Patent number: 7528077Abstract: The present invention provides a semiconductor device having a coating film of a predetermined thickness provided along the circumference of a semiconductor light emitting element, and provide a method for easily manufacturing the semiconductor device. A semiconductor light emitting element 2 that emits blue light is mounted face down on the top face of a pedestal 1, and a coating film 3 containing a YAG fluorescent material 6 that emits yellow light is placed so as to cover the top face and side face of the semiconductor light emitting element 2 and the top face of the pedestal 1. With the semiconductor light emitting element 2 and other elements placed between a first film 8 and a second film 9, the films are laminated in vacuum, thereby to fasten the coating film 3 onto the semiconductor light emitting element 2.Type: GrantFiled: December 20, 2004Date of Patent: May 5, 2009Assignee: Nichia CorporationInventors: Kunihiro Izuno, Shinsuke Sofue
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Patent number: 7511424Abstract: A light emitting device is provided, including a light emitting element, a package comprised at least partially of metal on which said light emitting element is mounted, and a resin layer coated on said light emitting element. The light emitting element is eutectic bonded to a metal portion of said package, and the resin layer is formed of a cured product of a silicone composition. The composition includes (i) an organopolysiloxane having an average composition formula (1): R1a(OX)bSiO(4?a?b)/2 ??(1) wherein R1 is an alkyl, alkenyl or aryl group, X is a hydrogen atom, or an alkyl, alkenyl, alkoxyalkyl or acyl group, a is a number from 1.05 to 1.5, b is a number of 0<b<2, and 1.05<a+b<2, and (ii) a condensation catalyst. The device exhibits improved heat resistance and light resistance, and also exhibits improved adhesion to the resins and metal members used.Type: GrantFiled: April 7, 2006Date of Patent: March 31, 2009Assignee: Nichia CorporationInventors: Shinsuke Sofue, Hiroto Tamaki, Kunihiro Izuno
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Publication number: 20060226774Abstract: A light emitting device is provided, including a light emitting element, a package comprised at least partially of metal on which said light emitting element is mounted, and a resin layer coated on said light emitting element. The light emitting element is eutectic bonded to a metal portion of said package, and the resin layer is formed of a cured product of a silicone composition. The composition includes (i) an organopolysiloxane having an average composition formula (1): R1a(OX)bSiO(4?a?b)/2 ??(1) wherein R1 is an alkyl, alkenyl or aryl group, X is a hydrogen atom, or an alkyl, alkenyl, alkoxyalkyl or acyl group, a is a number from 1.05 to 1.5, b is a number of 0<b<2, and 1.05<a+b<2, and (ii) a condensation catalyst. The device exhibits improved heat resistance and light resistance, and also exhibits improved adhesion to the resins and metal members used.Type: ApplicationFiled: April 7, 2006Publication date: October 12, 2006Applicant: NICHIA CORPORATIONInventors: Shinsuke Sofue, Hiroto Tamaki, Kunihiro Izuno
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Publication number: 20060226758Abstract: A light emitting device, including a light emitting element, and a resin layer that has been screen printed to coat said light emitting element is provided. The resin layer is formed from a curable silicone resin composition, which includes (i) an organopolysiloxane with a polystyrene equivalent weight average molecular weight of at least 5×103, (ii) a condensation catalyst, (iii) a solvent, and (iv) a finely powdered inorganic filler. The uniformity of the film thickness is excellent, thus resulting in little color irregularities during light emission from the light emitting element.Type: ApplicationFiled: April 7, 2006Publication date: October 12, 2006Applicant: NICHIA CORPORATIONInventors: Shinsuke Sofue, Hiroto Tamaki, Kunihiro Izuno
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Publication number: 20060170332Abstract: The present invention provides a reliable, long-life phosphor, or the like, which is prevented from darkening due to aging. A light emitting apparatus has a light emitting element and a phosphor layer. The phosphor layer has a phosphor excited by light from the light emitting element, and a binder which binds the phosphor. The binder is hydroxide oxide gel obtained by curing sol of a hydroxide oxide mixed with sol containing at least one metallic element selected from the group consisting of Al, Y, Gd, Lu, Sc, Ga, In, and B. Transmittance of hydroxide oxide in a gel state is higher than the transmittance in the polycrystal state where the sol-gel reaction is proceeded. In addition, the content of hydroxyl group or water of crystallization in the hydroxide oxide is 10% or less by weight.Type: ApplicationFiled: March 12, 2004Publication date: August 3, 2006Inventors: Hiroto Tamaki, Shinsuke Sofue, Kunihiro Izuno, Junji Takeichi
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Publication number: 20050151147Abstract: The present invention provides a semiconductor device having a coating film of a predetermined thickness provided along the circumference of a semiconductor light emitting element, and provide a method for easily manufacturing the semiconductor device. A semiconductor light emitting element 2 that emits blue light is mounted face down on the top face of a pedestal 1, and a coating film 3 containing a YAG fluorescent material 6 that emits yellow light is placed so as to cover the top face and side face of the semiconductor light emitting element 2 and the top face of the pedestal 1. With the semiconductor light emitting element 2 and other elements placed between a first film 8 and a second film 9, the films are laminated in vacuum, thereby to fasten the coating film 3 onto the semiconductor light emitting element 2.Type: ApplicationFiled: December 20, 2004Publication date: July 14, 2005Inventors: Kunihiro Izuno, Shinsuke Sofue
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Patent number: D574336Type: GrantFiled: August 31, 2007Date of Patent: August 5, 2008Assignee: Nichia CorporationInventors: Satoshi Okada, Shinji Nishijima, Takahiro Amo, Hideyuki Nagai, Shinsuke Sofue