Patents by Inventor Kenji Terashima
Kenji Terashima 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: 10259997Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1-pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: GrantFiled: October 19, 2017Date of Patent: April 16, 2019Assignee: GE PHOSPHORS TECHNOLOGY, LLCInventors: Masatsugu Masuda, Kenji Terashima
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Publication number: 20180044587Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1?pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: ApplicationFiled: October 19, 2017Publication date: February 15, 2018Applicant: GE Phosphors Technology, LLCInventors: Masatsugu MASUDA, Kenji TERASHIMA
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Patent number: 9884990Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1-pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: GrantFiled: December 7, 2016Date of Patent: February 6, 2018Assignee: GE PHOSPHORS TECHNOLOGY, LLCInventors: Masatsugu Masuda, Kenji Terashima
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Patent number: 9624427Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1-pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: GrantFiled: January 28, 2014Date of Patent: April 18, 2017Assignee: GE PHOSPHORS TECHNOLOGY, LLCInventors: Masatsugu Masuda, Kenji Terashima
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Publication number: 20170081586Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1-pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: ApplicationFiled: December 7, 2016Publication date: March 23, 2017Applicant: GE Phosphors Technology, LLCInventors: Masatsugu MASUDA, Kenji TERASHIMA
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Patent number: 9496463Abstract: A phosphor as a divalent europium-activated oxynitride green light emitting phosphor which is a ?-type SiAlON substantially represented by a general formula (A): EuaSibAlcOdNe (where a, b, c, d, and e are numbers satisfying 0.005?a?0.4, b+c=12, and d+e=16), and having an average particle size (d1) (determined by an air permeability method) of 9 to 16 ?m, a median diameter (50% D) in particle size distribution of 12.5 to 35 ?m, 50% D/d1 of 1.4 to 2.2, and an absorptance at 600 nm of not more than 8.0%, and a light emitting apparatus, a BL light source apparatus, and a liquid crystal display device using the same are provided, to provide a light emitting apparatus with a high efficiency and a stable characteristic and a liquid crystal display apparatus using the same by using the ?-type SiAlON having controlled dispersibility and improved transparency.Type: GrantFiled: April 9, 2014Date of Patent: November 15, 2016Assignee: GE PHOSPHORS TECHNOLOGY, LLCInventors: Masatsugu Masuda, Masamichi Harada, Hitoshi Matsushita, Kenji Terashima
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Patent number: 9455381Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: GrantFiled: November 9, 2015Date of Patent: September 27, 2016Assignee: GE PHOSPHORS TECHNOLOGY, LLCInventors: Masatsugu Masuda, Kenji Terashima
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Patent number: 9356203Abstract: Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a ?-type SiAlON substantially represented by a general formula: EuaSibAlcOdNe, where 0.005?a?0.4, b+c=12, d+e=16, wherein 60% or more of the phosphor particle group is composed of the phosphor particles in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0. A high-efficiency and stable light emitting apparatus using a ?-type SiAlON, which includes a light converter using the phosphor particle group, and a phosphor particle group therefor are also provided.Type: GrantFiled: February 10, 2014Date of Patent: May 31, 2016Assignee: GE Phosphors Technology, LLCInventors: Tetsuya Hanamoto, Masatsugu Masuda, Kenji Terashima
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Publication number: 20160064627Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: ApplicationFiled: November 9, 2015Publication date: March 3, 2016Applicant: SHARP KABUSHIKI KAISHAInventors: Masatsugu MASUDA, Kenji TERASHIMA
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Patent number: 9263646Abstract: Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a ?-type SiAlON substantially represented by a general formula: EuaSibAlcOdNe, where 0.005?a?0.4, b+c=12, d+e=16, wherein 60% or more of the phosphor particle group is composed of the phosphor particles in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0. A high-efficiency and stable light emitting apparatus using a ?-type SiAlON, which includes a light converter using the phosphor particle group, and a phosphor particle group therefor are also provided.Type: GrantFiled: February 10, 2014Date of Patent: February 16, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Tetsuya Hanamoto, Masatsugu Masuda, Kenji Terashima
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Patent number: 9184353Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: GrantFiled: February 5, 2015Date of Patent: November 10, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Masatsugu Masuda, Kenji Terashima
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Publication number: 20150144959Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: ApplicationFiled: February 5, 2015Publication date: May 28, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Masatsugu MASUDA, Kenji TERASHIMA
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Patent number: 9000664Abstract: Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a ?-type SiAlON represented by a general formula: EuaSibAlcOdNe, where 0.005?a?0.4, b+c=12, d+e=16, wherein a mean value of a value obtained by dividing a longer particle diameter by a shorter particle diameter is not greater than 1.75. Also provided are a light emitting apparatus using the phosphor particle group in a light converter, and a liquid crystal display television using the light emitting apparatus. With these, a high-efficiency and stable light emitting apparatus using a ?-type SiAlON, and a phosphor particle group therefor are provided.Type: GrantFiled: April 2, 2010Date of Patent: April 7, 2015Assignees: Sharp Kabushiki Kaisha, Denki Kagaku Kogyo Kabushiki KaishaInventors: Tetsuya Hanamoto, Masatsugu Masuda, Kenji Terashima, Hideyuki Emoto, Hironori Nagasaki
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Patent number: 8981639Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: GrantFiled: August 27, 2014Date of Patent: March 17, 2015Assignee: Sharp Kabushiki KaishaInventors: Masatsugu Masuda, Kenji Terashima
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Publication number: 20140361332Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: ApplicationFiled: August 27, 2014Publication date: December 11, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Masatsugu Masuda, Kenji Terashima
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Patent number: 8829781Abstract: Disclosed is a light-emitting device (1) including a light-emitting element (2) emitting primary light, and a light converter (3) absorbing a part of the primary light emitted from the light-emitting element (2) and emitting secondary light having a longer wavelength than the primary light. The light converter (3) contains a green light-emitting phosphor (4) and a red light-emitting phosphor (5). The green light-emitting phosphor (4) is composed of at least one phosphor selected from a divalent europium-activated oxynitride phosphor substantially represented by the following formula: EuaSibAlcOdNe and a divalent europium-activated silicate phosphor substantially represented by the following formula: 2(Ba1-f-gMIfEug)O.SiO2, while the red light-emitting phosphor (5) is composed of at least one phosphor selected from tetravalent manganese-activated fluoro-tetravalent metalate phosphors substantially represented by the following formulae: MII2(MIII1-hMnh)F6 and/or MIV(MIII1-hMnh)F6.Type: GrantFiled: December 28, 2012Date of Patent: September 9, 2014Assignee: Sharp Kabushiki KaishaInventors: Masatsugu Masuda, Kenji Terashima
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Publication number: 20140218658Abstract: A phosphor as a divalent europium-activated oxynitride green light emitting phosphor which is a ?-type SiAlON substantially represented by a general formula (A): EuaSibAleOdNe (where a, b, c, d, and e are numbers satisfying 0.005?a?0.4, b+c=12, and d+e=16), and having an average particle size (d1) (determined by an air permeability method) of 9 to 16 ?m, a median diameter (50% D) in particle size distribution of 12.5 to 35 ?m, 50% D/d1 of 1.4 to 2.2, and an absorptance at 600 nm of not more than 8.0%, and a light emitting apparatus, a BL light source apparatus, and a liquid crystal display device using the same are provided, to provide a light emitting apparatus with a high efficiency and a stable characteristic and a liquid crystal display apparatus using the same by using the ?-type SiAlON having controlled dispersibility and improved transparency.Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Sharp Kabushiki KaishaInventors: Masatsugu MASUDA, Masamichi HARADA, Hitoshi MATSUSHITA, Kenji TERASHIMA
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Publication number: 20140184056Abstract: Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a ?-type SiAlON substantially represented by a general formula: EuaSibAlcOdNe, where 0.005?a?0.4, b+c=12, d+e=16, wherein 60% or more of the phosphor particle group is composed of the phosphor particles in which a value obtained by dividing a longer particle diameter by a shorter particle diameter is greater than 1.0 and not greater than 3.0. A high-efficiency and stable light emitting apparatus using a ?-type SiAlON, which includes a light converter using the phosphor particle group, and a phosphor particle group therefor are also provided.Type: ApplicationFiled: February 10, 2014Publication date: July 3, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Tetsuya HANAMOTO, Masatsugu MASUDA, Kenji TERASHIMA
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Publication number: 20140139101Abstract: There are provided a phosphor which is a divalent europium-activated oxynitride phosphor substantially represented by General formula (A): EuaSibAlcOdNe, a divalent europium-activated oxynitride phosphor substantially represented by General formula (B): MIfEugSihAlkOmNn or a divalent europium-activated nitride phosphor substantially represented by General formula (C): (MII1-pEup)MIIISiN3, having a reflectance of light emission in a longer wavelength region of visible light than a peak wavelength of 95% or larger, and a method of producing such phosphor; a nitride phosphor and an oxynitride phosphor which emit light efficiently and stably by the light having a wavelength ranging from 430 to 480 nm from a semiconductor light emitting device by means of a light emitting apparatus using such phosphor, and a producing method of such phosphor; and a light emitting apparatus having stable characteristics and realizing high efficiency.Type: ApplicationFiled: January 28, 2014Publication date: May 22, 2014Applicant: Sharp Kabushiki KaishaInventors: Masatsugu MASUDA, Kenji TERASHIMA
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Patent number: 8709283Abstract: A phosphor as a divalent europium-activated oxynitride green light emitting phosphor which is a ?-type SiAlON substantially represented by a general formula (A): EuaSibAlcOdNe (where a, b, c, d, and e are numbers satisfying 0.005?a?0.4, b+c=12, and d+e=16), and having an average particle size (d1) (determined by an air permeability method) of 9 to 16 ?m, a median diameter (50% D) in particle size distribution of 12.5 to 35 ?m, 50% D/d1 of 1.4 to 2.2, and an absorptance at 600 nm of not more than 8.0%, and a light emitting apparatus, a BL light source apparatus, and a liquid crystal display device using the same are provided, to provide a light emitting apparatus with a high efficiency and a stable characteristic and a liquid crystal display apparatus using the same by using the ?-type SiAlON having controlled dispersibility and improved transparency.Type: GrantFiled: December 16, 2010Date of Patent: April 29, 2014Assignee: Sharp Kabushiki KaishaInventors: Masatsugu Masuda, Masamichi Harada, Hitoshi Matsushita, Kenji Terashima