Patents by Inventor Tadao Hayashi
Tadao Hayashi 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: 10559724Abstract: A light emitting device includes a light emitting element, a reflective member, and a covering member. The light emitting element includes a light extraction surface, an electrode-formed surface on a side opposite to the light extraction surface, lateral surfaces positioned between the light extraction surface and the electrode-formed surface, and a pair of electrodes on the electrode-formed surface. At least a part of the pair of the electrodes is exposed outside the light emitting device. The reflective member covers the lateral surfaces of the light emitting element while being in contact with at least a part of the light emitting element, the part of the pair of the electrodes being exposed from the reflective member. The covering member includes a lens portion on an upper surface thereof. The covering member covers the light emitting element and the reflective member while being in contact with the reflective member.Type: GrantFiled: October 13, 2017Date of Patent: February 11, 2020Assignee: NICHIA CORPORATIONInventor: Tadao Hayashi
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Publication number: 20200043903Abstract: A light-emitting module includes a light-emitting element unit including a light-emitting element, a light-transmissive member covering a main light-emitting surface of the light-emitting element, and a first light-reflective member covering lateral surfaces of the light-emitting element; a light-transmissive light-guiding plate having a first main surface and a second main surface having a recess accommodating the light-emitting element unit; a second light-reflective member covering the second main surface and the light-emitting element unit; and a light-transmissive bonding member disposed in contact with inner lateral surfaces of the recess and outer lateral surfaces of the light-emitting element unit. At least a portion of the first light-reflective member is located outside the recess in a cross-sectional view, and is in contact with the light-transmissive bonding member.Type: ApplicationFiled: August 1, 2019Publication date: February 6, 2020Applicant: NICHIA CORPORATIONInventors: Daisuke KASAI, Tadao HAYASHI, Toru HASHIMOTO
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Publication number: 20190312183Abstract: A method of manufacturing a covering member includes: providing a first light-reflective member comprising a through-hole, the through-hole having first and second openings; arranging a light-transmissive resin containing a wavelength-conversion material within the through-hole; distributing the wavelength-conversion material predominantly on a side of the first opening of the through-hole within the light-transmissive resin; and after the step of distributing the wavelength-conversion material, removing a portion of the light-transmissive resin from a side of the second opening of the through-hole.Type: ApplicationFiled: June 20, 2019Publication date: October 10, 2019Applicant: NICHIA CORPORATIONInventors: Tadao HAYASHI, Teruhito AZUMA, Suguru BEPPU, Kunihiro IZUNO, Tsuyoshi OKAHISA
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Patent number: 10415801Abstract: A method for manufacturing a linear light emitting device includes: providing a light transmissive member having a long side and a short side in a plan view; mounting a plurality of light emitting elements on the light transmissive member via a light transmissive adhesive, such that the light emitting elements are arranged in a row along the long side of the light transmissive member; and forming a reflective member that covers the light transmissive adhesive and lateral faces of the light emitting elements. The linear light emitting device has an emission face having a long side and a short side in a plan view, and a length of the short side of the light transmissive member is substantially equal to a length of the short side of the emission face of the linear light emitting device.Type: GrantFiled: September 29, 2017Date of Patent: September 17, 2019Assignee: NICHIA CORPORATIONInventor: Tadao Hayashi
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Patent number: 10374134Abstract: A light emitting device includes: a covering member including a first light-reflective member having a through-hole, and a light-transmissive resin disposed in the through-hole; a light-emitting element arranged to face the light-transmissive resin; a second light-reflective member arranged to face the first light-reflective member around the light-emitting element, the second light-reflective member covering a lateral surface of the light-emitting element; and a bonding member bonding the light-transmissive resin and the light-emitting element, the bonding member covering at least a part of the lateral surface of the light-emitting element. The light-transmissive resin contains a wavelength-conversion material distributed predominantly on either (i) a side of a lower surface of the light-transmissive resin facing the light-emitting element, or (ii) a side of an upper surface of the light-transmissive resin apart from the light-emitting element.Type: GrantFiled: May 27, 2016Date of Patent: August 6, 2019Assignee: NICHIA CORPORATIONInventors: Tadao Hayashi, Teruhito Azuma, Suguru Beppu, Kunihiro Izuno, Tsuyoshi Okahisa
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Patent number: 10270011Abstract: A light emitting device includes a base body, a light emitting element and a sealing member. The base body includes a base material and a pair of connection terminals on at least a first main surface of the base material. The light emitting element is connected to the connection terminals. The sealing member seals the light emitting element. The sealing member includes a light transmissive member disposed on an upper surface of the light emitting element, and a light shielding member sealing an end surface of the light emitting element and an end surface of the light transmissive member. The base material has a linear expansion coefficient within ±10 ppm/° C. of a linear expansion coefficient of the light emitting element.Type: GrantFiled: March 24, 2017Date of Patent: April 23, 2019Assignee: NICHIA CORPORATIONInventors: Takuya Nakabayashi, Takeshi Ikegami, Tadaaki Ikeda, Tadao Hayashi, Hiroto Tamaki
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Publication number: 20190067537Abstract: A light emitting device including a light emitting element, a light transmissive member, a light guide member, and a light reflective member. The light transmissive member is disposed on an upper surface of the light emitting element, and has a lower surface including a first region facing the light emitting element and a second region positioned outside of the first region. The light guide member covers a lateral surface of the light emitting element and the second region of the lower surface of the light transmissive member. The light reflective member covers the light emitting element, an upper surface of the light transmissive member and the light guide member. One of lateral surfaces of the light transmissive member is exposed from the light reflective member.Type: ApplicationFiled: August 22, 2018Publication date: February 28, 2019Inventor: Tadao HAYASHI
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Publication number: 20190049649Abstract: A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements.Type: ApplicationFiled: June 29, 2018Publication date: February 14, 2019Applicant: NICHIA CORPORATIONInventors: Tadao HAYASHI, Ryohei YAMASHITA, Yusaku ACHI, Mamoru IMADA
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Publication number: 20190006568Abstract: A light emitting device includes: a light emitting element comprising: a semiconductor multilayer structure that has an electrode formation surface, a light-emitting surface opposite to the electrode formation surface, and side surfaces between the electrode formation surface and the light-emitting surface, and a pair of electrodes provided on the electrode formation surface; a covering member covering the side surfaces of the light emitting element; and an optical member disposed over the light-emitting surface of the light emitting element and an upper surface of the covering member, the optical member comprising: a light-reflective portion disposed above the light emitting element, and a light-transmissive portion disposed between the light-reflective portion and the covering member and forming a part of an outer side surface of the light emitting device.Type: ApplicationFiled: June 28, 2018Publication date: January 3, 2019Applicant: NICHIA CORPORATIONInventor: Tadao HAYASHI
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Patent number: 10069045Abstract: A method of manufacturing a light emitting device including: forming a supporting body on a mounting surface of each of semiconductor light emitting elements; arranging the semiconductor light emitting elements to be spaced apart from each other by a predetermined distance; and forming a wavelength conversion layer to continuously cover an upper surface and side surfaces of at least one of the semiconductor light emitting elements. The forming the wavelength conversion layer includes spraying a slurry provided by mixing particles of a wavelength conversion member and a thermosetting resin in a solvent onto the upper surface and the side surfaces of the semiconductor light emitting element, so that a thickness of the wavelength conversion layer at a lower portion of the side surfaces of the supporting body is smaller than the thickness on the upper surface and the side surfaces of the semiconductor light emitting element.Type: GrantFiled: April 10, 2017Date of Patent: September 4, 2018Assignee: NICHIA CORPORATIONInventors: Takeshi Ikegami, Tadao Hayashi, Hiroto Tamaki
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Publication number: 20180239193Abstract: A light emitting module with a reduced thickness is provided. A method of manufacturing a light emitting module sequentially includes: providing a light guiding plate having a first main surface being a light emitting surface, and a second main surface on the side opposite to the first main surface; providing a plurality of light emitting elements on the light guiding plate; and forming a wiring electrically connecting the plurality of light emitting elements. A light emitting module includes: a light guiding plate having a first main surface and a second main surface; a plurality of wavelength conversion parts disposed at the second main surface of the light guiding plate so as to be spaced apart from each other; a plurality of light emitting elements respectively bonded to the plurality of wavelength conversion parts; and a wiring connected to the plurality of light emitting elements.Type: ApplicationFiled: February 16, 2018Publication date: August 23, 2018Applicant: NICHIA CORPORATIONInventor: Tadao HAYASHI
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Publication number: 20180175239Abstract: A method for manufacturing a light-emitting device includes: providing a light-transmissive member comprising: a base portion, and a projecting portion on a first surface side of the base portion; providing a light-emitting element that has a main emitting surface and an electrode formation surface opposite to the main emitting surface; disposing the light-emitting element on the projecting portion of the light-transmissive member such that the main emitting surface of the light-emitting element faces an upper surface of the projecting portion of the light-transmissive member; and forming a light-reflective member that covers at least one of (i) lateral surfaces of the light-emitting element, and/or (ii) lateral surfaces of the projecting portion of the light-transmissive member.Type: ApplicationFiled: December 20, 2017Publication date: June 21, 2018Applicant: NICHIA CORPORATIONInventor: Tadao HAYASHI
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Patent number: 10001594Abstract: A lighting device includes a light-emitting component including at least one light-emitting element mounted on a base, a light guide plate guiding light emitted from the light-emitting element, a wavelength conversion member partially covering the light guide plate, and a first reflective member covering the wavelength conversion member. The light guide plate comprises two main surfaces, which include a light-extraction surface allowing light emitted from the light-emitting element to exit and a rear surface opposite to the light-extraction surface. One of two main surfaces comprises at least one recess formed in an edge region thereof. The other main surface of the light guide plate includes a part covered by the wavelength conversion member and a part exposed from the wavelength conversion member. The light-emitting element is accommodated in the recess such that a light-emitting surface of the light-emitting element faces the wavelength conversion member.Type: GrantFiled: September 30, 2016Date of Patent: June 19, 2018Assignee: NICHIA CORPORATIONInventor: Tadao Hayashi
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Publication number: 20180145229Abstract: A composite board is provided with a board and a covering member. The board includes a base made of ceramics, first wiring provided on an upper surface of the base, and second wiring provided on a lower surface of the base and electrically connected to the first wiring. The covering member covers the base such that the first wiring and the second wiring are exposed.Type: ApplicationFiled: January 19, 2018Publication date: May 24, 2018Applicant: NICHIA CORPORATIONInventor: Tadao HAYASHI
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Publication number: 20180108815Abstract: A light emitting device includes a light emitting element, a reflective member, and a covering member. The light emitting element includes a light extraction surface, an electrode-formed surface on a side opposite to the light extraction surface, lateral surfaces positioned between the light extraction surface and the electrode-formed surface, and a pair of electrodes on the electrode-formed surface. At least a part of the pair of the electrodes is exposed outside the light emitting device. The reflective member covers the lateral surfaces of the light emitting element while being in contact with at least a part of the light emitting element, the part of the pair of the electrodes being exposed from the reflective member. The covering member includes a lens portion on an upper surface thereof. The covering member covers the light emitting element and the reflective member while being in contact with the reflective member.Type: ApplicationFiled: October 13, 2017Publication date: April 19, 2018Inventor: Tadao HAYASHI
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Publication number: 20180094796Abstract: A method for manufacturing a linear light emitting device includes: providing a light transmissive member having a long side and a short side in a plan view; mounting a plurality of light emitting elements on the light transmissive member via a light transmissive adhesive, such that the light emitting elements are arranged in a row along the long side of the light transmissive member; and forming a reflective member that covers the light transmissive adhesive and lateral faces of the light emitting elements. The linear light emitting device has an emission face having a long side and a short side in a plan view, and a length of the short side of the light transmissive member is substantially equal to a length of the short side of the emission face of the linear light emitting device.Type: ApplicationFiled: September 29, 2017Publication date: April 5, 2018Applicant: NICHIA CORPORATIONInventor: Tadao HAYASHI
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Patent number: 9911904Abstract: A composite board is provided with a board and a covering member. The board includes a base made of ceramics, first wiring provided on an upper surface of the base, and second wiring provided on a lower surface of the base and electrically connected to the first wiring. The covering member covers the base such that the first wiring and the second wiring are exposed.Type: GrantFiled: August 31, 2016Date of Patent: March 6, 2018Assignee: NICHIA CORPORATIONInventor: Tadao Hayashi
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Patent number: 9835310Abstract: A wave-length conversion inorganic member can includes a base body and an inorganic particle layer on the base body. The inorganic particle layer can include particles of an inorganic wave-length conversion substance which is configured to absorb light of a first wave-length and to emit light of a second wave-length different from the first wave-length. The inorganic particle layer can include an agglomerate of a plurality of the particles. Each of the plurality of the particles are in contact with at least one of the other particles or the base body. A cover layer comprises an inorganic material, and the cover layer continuously covers a surface of the base body and surfaces of the particles. The inorganic particle layer has an interstice enclosed by the particles, or by the particles and one of the base body and the cover layer.Type: GrantFiled: January 6, 2015Date of Patent: December 5, 2017Assignee: NICHIA CORPORATIONInventors: Hiroto Tamaki, Takayoshi Wakaki, Tadao Hayashi, Yoshiki Sato, Daisuke Oyamatsu, Takafumi Sugiyama, Takao Kosugi
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Publication number: 20170213941Abstract: A method of manufacturing a light emitting device including: forming a supporting body on a mounting surface of each of semiconductor light emitting elements; arranging the semiconductor light emitting elements to be spaced apart from each other by a predetermined distance; and forming a wavelength conversion layer to continuously cover an upper surface and side surfaces of at least one of the semiconductor light emitting elements. The forming the wavelength conversion layer includes spraying a slurry provided by mixing particles of a wavelength conversion member and a thermosetting resin in a solvent onto the upper surface and the side surfaces of the semiconductor light emitting element, so that a thickness of the wavelength conversion layer at a lower portion of the side surfaces of the supporting body is smaller than the thickness on the upper surface and the side surfaces of the semiconductor light emitting element.Type: ApplicationFiled: April 10, 2017Publication date: July 27, 2017Inventors: Takeshi IKEGAMI, Tadao HAYASHI, Hiroto TAMAKI
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Publication number: 20170200868Abstract: A light emitting device includes a base body, a light emitting element and a sealing member. The base body includes a base material and a pair of connection terminals on at least a first main surface of the base material. The light emitting element is connected to the connection terminals. The sealing member seals the light emitting element. The sealing member includes a light transmissive member disposed on an upper surface of the light emitting element, and a light shielding member sealing an end surface of the light emitting element and an end surface of the light transmissive member. The base material has a linear expansion coefficient within ±10 ppm/° C. of a linear expansion coefficient of the light emitting element.Type: ApplicationFiled: March 24, 2017Publication date: July 13, 2017Inventors: Takuya NAKABAYASHI, Takeshi IKEGAMI, Tadaaki IKEDA, Tadao HAYASHI, Hiroto TAMAKI