Patents by Inventor Yoshinobu Kawaguchi
Yoshinobu Kawaguchi 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: 20240136470Abstract: A manufacturing method for a semiconductor device according to the present disclosure includes preparing a laminate body including a plurality of semiconductor layers, and a first support body including an upper surface, a side surface, and a recessed portion including an opening adjacent to the upper surface and the side surface, bonding and disposing the laminate body to the upper surface of the first support body, forming a first end surface at the laminate body, and forming a first dielectric layer on the first end surface.Type: ApplicationFiled: February 21, 2022Publication date: April 25, 2024Applicant: KYOCERA CorporationInventors: Yoshinobu KAWAGUCHI, Takeshi KAMIKAWA, Kentaro MURAKAWA
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Publication number: 20240120708Abstract: A light-emitting body includes a base semiconductor part including a nitride semiconductor, a compound semiconductor part including a nitride semiconductor and positioned above the base semiconductor part, and a first electrode and a second electrode. The base semiconductor part includes first part and second part having a density of threading dislocation extending in a thickness direction lower than that of the first part, at least part of the first electrode and at least part of the second electrode are positioned on the compound semiconductor part, and at least part of the first electrode is positioned above the second part.Type: ApplicationFiled: June 13, 2022Publication date: April 11, 2024Applicant: KYOCERA CorporationInventors: Yoshinobu KAWAGUCHI, Takeshi KAMIKAWA, Kentaro MURAKAWA
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Publication number: 20220247157Abstract: A substrate includes an upper surface and wiring lines disposed on the upper surface. The first optical semiconductor element is disposed on the upper surface of the substrate, and the second optical semiconductor element is adjacent to the first optical semiconductor element. The first optical semiconductor element includes a first electrode and a second electrode each disposed at a lower end portion of the first optical semiconductor element, and each of the first electrode and the second electrode is connected to a corresponding one of the wiring lines.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Applicant: KYOCERA CorporationInventors: Yoshinobu KAWAGUCHI, Takeshi KAMIKAWA
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Publication number: 20200263850Abstract: Provided are an illumination device that is capable of making linearly clear a bright-dark contrast of a boundary between an illumination region and a dark portion in at least one of a horizontal direction and a vertical direction, and a vehicular headlight. The illumination device (1A) includes an emitting section (15) having a phosphor that receives excitation light emitted from a laser element (2c) and emits light; and a movable mirror (20A) that continuously changes a position of a spot (15a) of the excitation light on the emitting section (15) in accordance with a predetermined rule. The spot (15a) has an edge portion in which at least a pair of two opposing sides are linear.Type: ApplicationFiled: August 5, 2016Publication date: August 20, 2020Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHAInventors: YOSHINOBU KAWAGUCHI, KOJI TAKAHASHI, YOSHIYUKI TAKAHIRA
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Publication number: 20200185877Abstract: In an optical module (first module (1)), a plurality of semiconductor laser elements (a first semiconductor laser element (21) through a third semiconductor laser element (23)) that output light of wavelengths which are different from each other from light emitting points are mounted on a base member (10). The base member (10) has a reference surface (11) serving as a reference in a height direction (Z) and a mounting surface (a first mounting surface (12a) and a second mounting surface (12b)) on which the semiconductor laser elements are mounted. At least some of the plurality of semiconductor laser elements are different from each other in a height (a first light emission height (TL1) through a third light emission height (TL3)) from a surface in contact with the mounting surface to the light emitting points, and are substantially equal in a height (reference height (HL)) from the reference surface to the light emitting points.Type: ApplicationFiled: January 31, 2017Publication date: June 11, 2020Inventors: YOSHINOBU KAWAGUCHI, SHINJI OSAKI, TAKATOSHI MORITA, SHOGO YANASE, TOSHIO KAGAWA, TERUYUKI OOMATSU, KAZUAKI KANEKO, SHIGETOSHI ITO
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Patent number: 10330267Abstract: A light emission body capable of simultaneously improving spot feature and color unevenness of illumination light is provided. A light emission body (6) according to one embodiment of the present invention includes a fluorescent substance layer (61) having a light irradiation surface (61a) irradiated with laser light (L1) and a light emitting surface (61b) emitting the laser light (L1) and fluorescence (L2), a light absorption layer (62) that blocks the laser light (L1) and the fluorescence (L2) emitted from the light emitting surface (61b), and a scattering layer (63) that scatters the laser light (L1) and the fluorescence (L2) which are not blocked by the light absorption layer (62).Type: GrantFiled: May 31, 2016Date of Patent: June 25, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Kazunori Annen, Yoshinobu Kawaguchi, Yoshiyuki Takahira, Koji Takahashi, Yosuke Maemura, Tomohiro Sakaue
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Patent number: 10320147Abstract: A wavelength conversion member that includes a single crystal phosphor and has a high yield rate is provided. A light emitting unit (1) is a wavelength conversion member that converts a wavelength of a laser light output from a laser light source and includes a phosphor layer (1a) formed of a single crystal phosphor. A plane orientation of a principal plane (1b), which has an area larger than those of divided planes, of the phosphor layer is {111}, and a plane orientation of some divided planes out of the plurality of divided planes is {1-10}.Type: GrantFiled: May 12, 2016Date of Patent: June 11, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Yoshiyuki Takahira, Koji Takahashi, Yoshinobu Kawaguchi, Kazunori Annen, Yosuke Maemura, Tomohiro Sakaue, Takatoshi Morita
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Publication number: 20190052052Abstract: A wavelength conversion member that includes a single crystal phosphor and has a high yield rate is provided. A light emitting unit (1) is a wavelength conversion member that converts a wavelength of a laser light output from a laser light source and includes a phosphor layer (1a) formed of a single crystal phosphor. A plane orientation of a principal plane (1b), which has an area larger than those of divided planes, of the phosphor layer is {111}, and a plane orientation of some divided planes out of the plurality of divided planes is {1-10}.Type: ApplicationFiled: May 12, 2016Publication date: February 14, 2019Applicant: SHARP KABUSHIKI KAISHAInventors: YOSHIYUKI TAKAHIRA, KOJI TAKAHASHI, YOSHINOBU KAWAGUCHI, KAZUNORI ANNEN, YOSUKE MAEMURA, TOMOHIRO SAKAUE, TAKATOSHI MORITA
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Publication number: 20190032866Abstract: Efficiency of extracting fluorescent light in a desired direction is improved. A light emitting portion (12) of a light emitting device (10) includes a gap present inside thereof, the gap having a width that is one-tenth or less of the wavelength of laser light. An excitation-light transmitting film (13) that transmits laser light and that reflects fluorescent light is provided on a side where a light reception surface (12a) that receives laser light is present. A fluorescent-light transmitting film (14) that reflects laser light and that transmits fluorescent light is provided on a side where an emission surface (12b) that emits fluorescent light is present.Type: ApplicationFiled: December 20, 2016Publication date: January 31, 2019Inventors: KAZUNORI ANNEN, KOJI TAKAHASHI, YOSHINOBU KAWAGUCHI, YOSUKE MAEMURA, TOMOHIRO SAKAUE, YOSHIYUKI TAKAHIRA
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Publication number: 20190024854Abstract: A light emission body capable of simultaneously improving spot feature and color unevenness of illumination light is provided. A light emission body (6) according to one embodiment of the present invention includes a fluorescent substance layer (61) having a light irradiation surface (61a) irradiated with laser light (L1) and a light emitting surface (61b) emitting the laser light (L1) and fluorescence (L2), a light absorption layer (62) that blocks the laser light (L1) and the fluorescence (L2) emitted from the light emitting surface (61b), and a scattering layer (63) that scatters the laser light (L1) and the fluorescence (L2) which are not blocked by the light absorption layer (62).Type: ApplicationFiled: May 31, 2016Publication date: January 24, 2019Inventors: KAZUNORI ANNEN, YOSHINOBU KAWAGUCHI, YOSHIYUKI TAKAHIRA, KOJI TAKAHASHI, YOSUKE MAEMURA, TOMOHIRO SAKAUE
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Publication number: 20180347785Abstract: When a phosphor layer formed of a small-gap phosphor plate is used, color irregularity of illumination light emitted from a light-emitting device is reduced. The light-emitting device (100) which emits laser light (L1) as part of illumination light includes a semiconductor laser (10a to 10c) which emits the laser light (L1), which is visible light, a phosphor layer (1a) formed of a small-gap phosphor plate which emits a fluorescence (L2) upon reception of the laser light (L1) emitted from the semiconductor laser (10a to 10c), and an excitation light distribution control unit (1b) which controls light distribution of the laser light (L1) and guides the laser light (L1) to inside of the phosphor layer (1a). The small-gap phosphor plate is a phosphor plate in which a gap that is present inside has a width equal to or longer than 0 nm and equal to or shorter than one tenths of a wavelength of the laser light (L1).Type: ApplicationFiled: May 17, 2016Publication date: December 6, 2018Inventors: YOSHINOBU KAWAGUCHI, KAZUNORI ANNEN, KOJI TAKAHASHI, YOSHIYUKI TAKAHIRA, YOSUKE MAEMURA, TOMOHIRO SAKAUE
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Publication number: 20180292059Abstract: A light-emitting device includes a plurality of light source units each having a laser light source that outputs excitation light, and a phosphor unit that receives the excitation light and emits fluorescence. At least two light source units of the plurality of light source units are configured so that excitation light beams overlap each other on a light irradiation surface of the phosphor unit when the light irradiation surface is irradiated with the excitation light beams and so that longitudinal directions of long shapes of projection light beams on the light irradiation surface by the excitation light beams projected onto the light irradiation surface are parallel or substantially parallel to each other.Type: ApplicationFiled: August 10, 2016Publication date: October 11, 2018Inventors: MOTOI NAGAMORI, KENJI HATAZAWA, KOJI TAKAHASHI, YOSHINOBU KAWAGUCHI
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Publication number: 20170237230Abstract: A nitride semiconductor light emitting device includes a first coat film of aluminum nitride or aluminum oxynitride formed at a light emitting portion and a second coat film of aluminum oxide formed on the first coat film. The thickness of the second coat film is at least 80 nm and at most 1000 nm. Here, the thickness of the first coat film is preferably at least 6 nm and at most 200 nm.Type: ApplicationFiled: May 1, 2017Publication date: August 17, 2017Applicant: Sharp Kabushiki KaishaInventors: Yoshinobu KAWAGUCHI, Takeshi KAMIKAWA
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Patent number: 9660413Abstract: A nitride semiconductor light emitting device includes a first coat film of aluminum nitride or aluminum oxynitride formed at a light emitting portion and a second coat film of aluminum oxide formed on the first coat film. The thickness of the second coat film is at least 80 nm and at most 1000 nm. Here, the thickness of the first coat film is preferably at least 6 nm and at most 200 nm.Type: GrantFiled: October 13, 2015Date of Patent: May 23, 2017Assignee: Sharp Kabushiki KaishaInventors: Yoshinobu Kawaguchi, Takeshi Kamikawa
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Publication number: 20160036197Abstract: A nitride semiconductor light emitting device includes a first coat film of aluminum nitride or aluminum oxynitride formed at a light emitting portion and a second coat film of aluminum oxide formed on the first coat film. The thickness of the second coat film is at least 80 nm and at most 1000 nm. Here, the thickness of the first coat film is preferably at least 6 nm and at most 200 nm.Type: ApplicationFiled: October 13, 2015Publication date: February 4, 2016Inventors: Yoshinobu KAWAGUCHI, Takeshi Kamikawa
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Patent number: 9190806Abstract: A nitride semiconductor light emitting device includes a first coat film of aluminum nitride or aluminum oxynitride formed at a light emitting portion and a second coat film of aluminum oxide formed on the first coat film. The thickness of the second coat film is at least 80 nm and at most 1000 nm. Here, the thickness of the first coat film is preferably at least 6 nm and at most 200 nm.Type: GrantFiled: August 11, 2010Date of Patent: November 17, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Yoshinobu Kawaguchi, Takeshi Kamikawa
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Publication number: 20150309235Abstract: An optical apparatus of an aspect of the present invention includes: a plurality of semiconductor laser elements each of which emits laser light; an optical fiber which has a core which guides the laser light; and an imaging section which causes a plurality of beams of laser light to form an image on an incidence end surface of the single core, the incidence end surface having an outer shape which has a first side defining a width of the core and a second side defining a height of the core, a plurality of spots which are formed on the incidence end surface having respective long axes which are aligned with each other, the long axes of the plurality of spots being aligned with the first side or the second side.Type: ApplicationFiled: April 22, 2015Publication date: October 29, 2015Applicant: Sharp Kabushiki KaishaInventors: Yoshinobu KAWAGUCHI, Yoshiyuki TAKAHIRA, Koji TAKAHASHI, Kyohko MATSUDA, Toshiyuki OKUMURA
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Patent number: 8735192Abstract: There is provided a nitride semiconductor light emitting device having a light emitting portion coated with a coating film, the light emitting portion being formed of a nitride semiconductor, the coating film in contact with the light emitting portion being formed of an oxynitride. There is also provided a method of fabricating a nitride semiconductor laser device having a cavity with a facet coated with a coating film, including the steps of: providing cleavage to form the facet of the cavity; and coating the facet of the cavity with a coating film formed of an oxynitride.Type: GrantFiled: May 23, 2008Date of Patent: May 27, 2014Assignee: Sharp Kabushiki KaishaInventors: Takeshi Kamikawa, Yoshinobu Kawaguchi
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Patent number: 8571083Abstract: A nitride semiconductor laser chip is provided that offers sufficient reliability even at high output. The nitride semiconductor laser chip has a nitride semiconductor layer formed on a substrate, a resonator facet formed on the nitride semiconductor layer, and a coating film formed on the resonator facet and containing Ar. The coating film has, in a region contiguous with the resonator facet and in the vicinity thereof, a low-Ar region with a low Ar content and, on the side of this low-Ar region opposite from the resonator facet, a high-Ar region with a higher Ar content than the low-Ar region.Type: GrantFiled: May 24, 2010Date of Patent: October 29, 2013Assignee: Sharp Kabushiki KaishaInventors: Yoshinobu Kawaguchi, Takeshi Kamikawa
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Patent number: 8541796Abstract: There is provided a nitride semiconductor light emitting device having a light emitting portion coated with a coating film, the light emitting portion being formed of a nitride semiconductor, the coating film in contact with the light emitting portion being formed of an oxynitride film deposited adjacent to the light emitting portion and an oxide film deposited on the oxynitride film. There is also provided a method of fabricating a nitride semiconductor laser device having a cavity with a facet coated with a coating film, including the steps of: providing cleavage to form the facet of the cavity; and coating the facet of the cavity with a coating film formed of an oxynitride film deposited adjacent to the facet of the cavity and an oxide film deposited on the oxynitride film.Type: GrantFiled: December 14, 2006Date of Patent: September 24, 2013Assignee: Sharp Kabushiki KaishaInventors: Yoshinobu Kawaguchi, Takeshi Kamikawa