Patents by Inventor Yasushi Hattori
Yasushi Hattori 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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Publication number: 20120018665Abstract: An aspect of the present invention relates to a method of preparing a magnetic particle, which comprises attaching a transition metal-containing organic compound to a surface of a hard magnetic particle and then thermally decomposing the transition metal-containing organic compound to obtain the magnetic particle.Type: ApplicationFiled: July 22, 2011Publication date: January 26, 2012Applicants: TOHOKU UNIVERSITY, FUJIFILM CORPORATIONInventors: Yasushi HATTORI, An-Pang TSAI, Satoshi KAMEOKA
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Publication number: 20120007113Abstract: According to one embodiment, a semiconductor light emitting device includes an n-type semiconductor layer, a p-type semiconductor layer, a well layer, a barrier layer, an Al-containing layer, and an intermediate layer. The p-type semiconductor layer is provided on a side of [0001] direction of the n-type semiconductor layer. The well layer, the barrier layer, the Al-containing layer and the intermediate layer are disposed between the n-type semiconductor layer and the p-type semiconductor layer subsequently. The Al-containing layer has a larger band gap energy than the barrier layer, a smaller lattice constant than the n-type semiconductor layer, and a composition of Alx1Ga1-x1-y1Iny1N. The intermediate layer has a larger band gap energy than the well layer, and has a first portion and a second portion provided between the first portion and the p-type semiconductor layer. A band gap energy of the first portion is smaller than that of the second portion.Type: ApplicationFiled: February 23, 2011Publication date: January 12, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Jongil Hwang, Shinji Saito, Maki Sugai, Rei Hashimoto, Yasushi Hattori, Masaki Tohyama, Shinya Nunoue
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Publication number: 20120002137Abstract: A liquid crystal display device of an embodiment has: a semiconductor laser diode emitting a first laser beam; a first reflecting unit configured to reflect the first laser beam and form a second laser beam having a one-dimensionally spread distribution; and a second reflecting unit configured to reflect the second laser beam and form a third laser beam having a two-dimensionally spread distribution. The device also has: an optical switch using liquid crystal, the optical switch being configured to control passage and blocking of the third laser beam; and a first scattering unit scattering the third laser beam.Type: ApplicationFiled: March 2, 2011Publication date: January 5, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shinji SAITO, Yasushi Hattori, Shinya Nunoue
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Publication number: 20110222149Abstract: According to the embodiments, an easy-to-fabricate light-emitting apparatus is provided in which a plurality of phosphors is disposed so as not to overlap each other. The light-emitting apparatus includes a light source that emits excitation light; a substrate having a protrusion and recess configuration where first planes and second planes which intersect the first planes are formed periodically; first phosphor layers formed on the first planes and absorbing the excitation light to emit a first fluorescence; and second phosphor layers formed on the second planes and absorbing the excitation light to emit a second fluorescence with a wavelength different from that of the first fluorescence.Type: ApplicationFiled: September 2, 2010Publication date: September 15, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Shinji SAITO, Yasushi Hattori, Yoshiyuki Harada, Shinya Nunoue
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Publication number: 20110216552Abstract: An embodiment of the invention provides a light emitting device in which a semiconductor laser diode is used as a light source to emit visible light in a wide range. The light emitting device includes a semiconductor laser diode that emits a laser beam; and a luminescent component that is provided while separated from the semiconductor laser diode and absorbs the laser beam to emit the visible light. In the light emitting device, the luminescent component includes an optical path through which the laser beam is incident to a center portion of the luminescent component.Type: ApplicationFiled: September 7, 2010Publication date: September 8, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Yasushi Hattori, Shinji Saito, Shinya Nunoue, Masaki Tohyama
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Publication number: 20110216798Abstract: Embodiments describe a semiconductor laser device driven at low voltage and which is excellent for cleavage and a method of manufacturing the device. In one embodiment, the semiconductor laser device includes a GaN substrate; a semiconductor layer formed on the GaN substrate; a ridge formed in the semiconductor layer; a recess formed in the bottom surface of the GaN substrate. The recess has a depth less than the thickness of the GaN substrate. The device also has a notch deeper than the recess formed on a side surface of the GaN substrate and separated from the recess. In the semiconductor laser device, the total thickness of the GaN substrate and the semiconductor layer is 100 ?m or more, and the distance between the top surface of the ridge and the bottom surface of the recess is 5 ?m or more and 50 ?m or less.Type: ApplicationFiled: September 1, 2010Publication date: September 8, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Maki SUGAI, Shinji SAITO, Rei HASHIMOTO, Yasushi HATTORI, Jongil HWANG, Masaki TOHYAMA, Shinya NUNOUE
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Publication number: 20110216554Abstract: An embodiment of the invention provides a light emitting device in which a semiconductor laser diode is used as a light source to efficiently obtain visible light having high uniformity of a luminance distribution. The light emitting device has a semiconductor laser diode that emits a laser beam. And the device has a light guide component that includes an upper surface, a lower surface, two side faces opposite each other, and two end faces opposite each other, the laser beam being incident from a first end face of the light guide component, the light guide component having indentation in the lower surface, the laser beam being reflected by the lower surface and emitted in an upper surface direction. The light emitting device also has a luminous component that is provided on an upper surface side of the light guide component and absorbs the laser beam emitted from the light guide component and emits visible light.Type: ApplicationFiled: September 7, 2010Publication date: September 8, 2011Applicants: Kabushiki Kaisha Toshiba, Harison Toshiba Lighting Corp.Inventors: Yasushi HATTORI, Masaki Tohyama, Shinji Saito, Shinya Nunoue, Rei Hashimoto, Jongil Hwang, Maki Sugai, Takanobu Ueno, Junichi Kinoshita, Misaki Ueno
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Publication number: 20110216799Abstract: According to one embodiment, a semiconductor laser device with high reliability and excellent heat dissipation is provided. The semiconductor laser device includes an active layer, a p-type semiconductor layer on the active layer, a pair of grooves formed by etching into the p-type semiconductor layer, a stripe sandwiched by the pair of grooves and having shape of ridge, and a pair of buried layers made of insulator to bury the grooves. The bottom surfaces of the grooves are shallower with an increase in distance from the stripe.Type: ApplicationFiled: September 2, 2010Publication date: September 8, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Rei Hashimoto, Maki Sugai, Jongil Hwang, Yasushi Hattori, Shinji Saito, Masaki Tohyama, Shinya Nunoue
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Patent number: 7985981Abstract: There is provided a semiconductor light-emitting device including a semiconductor light-emitting element, a phosphor layer disposed in a light path of a light emitted from the semiconductor light-emitting element, containing a phosphor to be excited by the light and having a cross-section in a region of a diameter which is 1 mm larger than that of a cross-section of the light path, and a heat-releasing member disposed in contact with at least a portion of the phosphor layer and exhibiting a higher thermal conductance than that of the phosphor layer.Type: GrantFiled: December 15, 2009Date of Patent: July 26, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Rei Hashimoto, Yasushi Hattori, Takahiro Sato, Jongil Hwang, Maki Sugai, Yoshiyuki Harada, Shinji Saito, Shinya Nunoue
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Publication number: 20110175014Abstract: An aspect of the present invention relates to a magnetic particle obtained by heat-treating a hexagonal ferrite magnetic material in reducing atmosphere containing hydrocarbon gas.Type: ApplicationFiled: January 20, 2011Publication date: July 21, 2011Applicant: FUJIFILM CORPORATIONInventor: Yasushi HATTORI
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Publication number: 20110177635Abstract: A light emitting device includes: a substrate having a concave portion formed on a surface thereof; a light emitting element emitting a first light which is a blue light or a near-ultraviolet light; a resin sheet being a deformable resin sheet formed on the substrate so as to cover the light emitting element; a first transmissive layer formed in a hemispherical shape on the first region of the resin sheet, and transmitting the first light; a color conversion layer including a fluorescent material that converts the first light into a second light of a different wavelength from that of the first light and a transmissive material that transmits the first light, the color conversion layer covering the first transmissive layer in such a manner that an end portion reaches an upper face of the resin sheet; and a second transmissive layer covering the color conversion layer in such a manner that an end portion reaches the upper face of the resin sheet, and transmitting the first light and the second light.Type: ApplicationFiled: April 1, 2011Publication date: July 21, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Iwao Mitsuishi, Shinya Nunoue, Yasushi Hattori, Kuniaki Konno
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Publication number: 20110171761Abstract: A method of manufacturing a light-emitting device includes disposing a light-emitting element on a supporting member, dispersing a fluorescent substance having a particle diameter of 20 to 45 ?m in a material of the light-transmitting member at a concentration of 40 to 60 wt %, dripping raw material for the fluorescent layer on the light-emitting element while lowering the viscosity of the raw material, and thermally curing the coated layer.Type: ApplicationFiled: March 22, 2011Publication date: July 14, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Kei Kaneko, Naomi Shida, Masahiro Yamamoto, Yasushi Hattori
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Publication number: 20110157864Abstract: According to embodiments, a light emitting device is provided.Type: ApplicationFiled: September 7, 2010Publication date: June 30, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Yasushi HATTORI, Masaki Tohyama, Shinji Saito, Shinya Nunoue, Maki Sugai, Rei Hashimoto
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Publication number: 20110101851Abstract: A light-emitting device is provided, which includes a package having a first portion and a second portion surrounding it, a semiconductor light-emitting element mounted on the first portion and emitting a light having an emission peak in a near-ultraviolet region, a transparent resin layer covering the semiconductor light-emitting element and contacted with the package, and a laminated body formed on the transparent resin layer with end faces of the laminated body being contacted with the second portion. The transparent resin layer has an arch-like outer profile perpendicular cross section. The laminated body has an arch-like outer profile in perpendicular cross section and comprises a red fluorescent layer, a yellow fluorescent layer, a green fluorescent layer and a blue fluorescent layer laminated in the mentioned order. The yellow fluorescent layer has a top portion which is made larger in thickness than that of the end face portions thereof.Type: ApplicationFiled: January 6, 2011Publication date: May 5, 2011Inventors: Iwao MITSUISHI, Shinya NUNOUE, Yasushi HATTORI
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Patent number: 7935978Abstract: A light emitting device includes: a substrate having a concave portion formed on a surface thereof; a light emitting element emitting a first light which is a blue light or a near-ultraviolet light; a resin sheet being a deformable resin sheet formed on the substrate so as to cover the light emitting element; a first transmissive layer formed in a hemispherical shape on the first region of the resin sheet, and transmitting the first light; a color conversion layer including a fluorescent material that converts the first light into a second light of a different wavelength from that of the first light and a transmissive material that transmits the first light, the color conversion layer covering the first transmissive layer in such a manner that an end portion reaches an upper face of the resin sheet; and a second transmissive layer covering the color conversion layer in such a manner that an end portion reaches the upper face of the resin sheet, and transmitting the first light and the second light.Type: GrantFiled: March 11, 2009Date of Patent: May 3, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Iwao Mitsuishi, Shinya Nunoue, Yasushi Hattori, Kuniaki Konno
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Patent number: 7932666Abstract: A light-emitting device is provided, which includes a supporting member, a light-emitting element disposed on the supporting member to emit a light, and a fluorescent layer formed on the light-emitting element and having a thickness ranging from 80 to 240 ?m, the fluorescent layer containing a light-transmitting member and a fluorescent substance having a particle diameter ranging from 20 to 45 ?m at a concentration of 40 to 60 wt %.Type: GrantFiled: February 7, 2006Date of Patent: April 26, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Kei Kaneko, Naomi Shida, Masahiro Yamamoto, Yasushi Hattori
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Patent number: 7915630Abstract: A light-emitting device which includes a semiconductor light-emitting element, and a plurality of plate-like wavelength conversion members which are disposed to face the semiconductor light-emitting element and are inclined with respect to the optical axis of excitation light emitted from the semiconductor light-emitting element, the plate-like wavelength conversion members containing respectively a fluorescent material which is capable of absorbing the excitation light and outputting light having a different wavelength from that of the excitation light, and the plate-like wavelength conversion members as a whole emitting visible light.Type: GrantFiled: March 23, 2009Date of Patent: March 29, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Yasushi Hattori, Shinji Saito, Shinya Nunoue, Eiji Muramoto, Koichi Tachibana, Saori Abe, Jongil Hwang, Maki Sugai
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Publication number: 20110051769Abstract: A semiconductor light emitting device includes: a stacked body including a first and a second semiconductor layers of a first and second conductivity types respectively, and a light emitting layer provided between thereof; a first and a second electrodes in contact with the first and second semiconductor layers respectively. Light emitted is resonated between first and second end surfaces of the stacked body opposed in a first direction. The second semiconductor layer includes a ridge portion and a wide portion. A width of the ridge portion along a second direction perpendicular to the first and the stacking directions is narrower on the second electrode side than on the light emitting layer side. A width of the wide portion along the second direction is wider than the ridge portion.Type: ApplicationFiled: March 8, 2010Publication date: March 3, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Maki SUGAI, Shinji Saito, Rei Hashimoto, Yasushi Hattori, Shinya Nunoue
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Patent number: 7884538Abstract: A light-emitting device is provided, which includes a package having a first portion and a second portion surrounding it, a semiconductor light-emitting element mounted on the first portion and emitting a light having an emission peak in a near-ultraviolet region, a transparent resin layer covering the semiconductor light-emitting element and contacted with the package, and a laminated body formed on the transparent resin layer with end faces of the laminated body being contacted with the second portion. The transparent resin layer has an arch-like outer profile perpendicular cross section. The laminated body has an arch-like outer profile in perpendicular cross section and comprises a red fluorescent layer, a yellow fluorescent layer, a green fluorescent layer and a blue fluorescent layer laminated in the mentioned order. The yellow fluorescent layer has a top portion which is made larger in thickness than that of the end face portions thereof.Type: GrantFiled: June 20, 2008Date of Patent: February 8, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Iwao Mitsuishi, Shinya Nunoue, Yasushi Hattori
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Publication number: 20110027588Abstract: An aspect of the present invention relates to magnetic powder comprised of gathering magnetic particles, wherein the magnetic particles comprise a hard magnetic particle and a soft magnetic material deposited on a surface of the hard magnetic particle in a state where the soft magnetic material is exchange-coupled with the hard magnetic particle.Type: ApplicationFiled: July 29, 2010Publication date: February 3, 2011Applicants: FUJIFILM Corporation, TOHOKU UNIVERSITYInventors: Yasushi Hattori, An-Pang Tsai, Satoshi Kameoka