Patents Assigned to Nichias Corporation
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Publication number: 20240083820Abstract: A method for producing a ceramic complex includes: preparing a raw material mixture that contains 5% by mass or more and 40% by mass or less of first rare earth aluminate fluorescent material particles containing an activating element and a first rare earth element different from the activating element, 0.1% by mass or more and 32% by mass or less of oxide particles containing a second rare earth element, and the balance of aluminum oxide particles, relative to 100% by mass of the total amount of the first rare earth aluminate fluorescent material particles, the oxide particles, and the aluminum oxide particles; preparing a molded body of the raw material mixture; and obtaining a sintered body by calcining the molded body in a temperature range of 1,550° C. or higher and 1,800° C. or lower.Type: ApplicationFiled: November 11, 2023Publication date: March 14, 2024Applicant: NICHIA CORPORATIONInventors: Toshiyuki HIRAI, Keisuke SUZUKI, Hirofumi OGURI
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Publication number: 20240088322Abstract: A method for manufacturing a light-emitting element includes preparing a wafer that includes a semiconductor structure body and a light-transmitting conductive film; forming a first mask on the light-transmitting conductive film; removing the light-transmitting conductive film exposed from the first mask to form an opening in the light-transmitting conductive film, the opening exposing the semiconductor structure body from under the light-transmitting conductive film; forming an n-side exposed part by removing the semiconductor structure body exposed from the first mask; removing the first mask; forming a second mask on the light-transmitting conductive film; removing the light-transmitting conductive film exposed from the second mask; forming an n-side electrode at the n-side exposed part; forming a third mask on the light-transmitting conductive film and on the semiconductor structure body; and removing the semiconductor structure body to form a groove dividing the semiconductor structure body into a pluralType: ApplicationFiled: September 6, 2023Publication date: March 14, 2024Applicant: NICHIA CORPORATIONInventors: Takefumi NAKAGAWA, Kazuo TAKAHASHI, Akira FUJIOKA
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Publication number: 20240088336Abstract: A light emitting device includes: an insulating base; a first upper metal part located on an upper surface of the base; a first light emitting element that is disposed on the upper surface of the base with the first upper metal part being interposed between the first light emitting element and the base, and is configured to emit light laterally from a first emission end surface of the first light emitting element; a first reflective member that is disposed on the upper surface of the base without the first upper metal part being interposed between the first reflective member and the base, faces the first light emitting element, and has a first reflective surface configured to reflect the light upward; and one or more lower metal parts located on the lower surface of the base.Type: ApplicationFiled: August 29, 2023Publication date: March 14, 2024Applicant: NICHIA CORPORATIONInventors: Tadayuki KITAJIMA, Kazuma KOZURU
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Patent number: 11929042Abstract: An image display method using an image display device is provided. The method includes performing a first operation to cause light to be emitted from light-emitting regions of a backlight at respective intensity in accordance with frame image data, sequentially with respect to each of first areas of the backlight, and performing a second operation to apply voltages to pixels of a liquid crystal panel at respective levels in accordance with the frame image data, sequentially with respect to each of second areas of the liquid crystal panel. Light-emitting regions in each of the first areas are repeatedly turned on and off a plurality of times during the first operation thereof.Type: GrantFiled: September 22, 2022Date of Patent: March 12, 2024Assignee: Nichia CorporationInventors: Masahiko Monomoshi, Tetsuya Kataoka
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Patent number: 11929501Abstract: A method for producing a positive electrode active material for a non-aqueous electrolyte secondary battery. The method includes providing a composition containing a first lithium transition metal composite oxide having a 50% particle size 1D50 in a first volume cumulative particle size distribution of 0.1 ?m or more and less than 3.2 ?m and a first liquid medium; and granulating the composition to obtain a second lithium transition metal composite oxide having a 50% particle size 2D50 in a second volume cumulative particle size distribution greater than 1D50. The second lithium transition metal composite oxide has a ratio of a 90% particle size 3D90 in a third volume cumulative particle size distribution measured after the ultrasonic treatment to a 90% particle size 2D90 in the second volume cumulative particle size distribution measured before the ultrasonic treatment (3D90/2D90) of 0.53 or less.Type: GrantFiled: September 29, 2021Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Hayaki Matsumoto, Yoshitomo Miyashita
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Patent number: 11927795Abstract: A planar light source includes a light guide member including light-emitting units separated by a groove and one or more light sources disposed in one or more of the light-emitting units. The light-emitting units include outer portions and at least one inner portion located in a region surrounded by the outer portions in a plan view. In the plan view, at least one of the outer portions is adjacent to a smaller number of light-emitting units than a number of light-emitting units to which one of the at least one inner portion is adjacent. In a state in which the same power is supplied and one of the outer portions and one of the at least one inner portion are allowed to individually emit light, brightness of the one of the outer portions is higher than brightness of the one of the at least one inner portion.Type: GrantFiled: October 28, 2022Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Ryoma Okado, Satoshi Yoshinaga
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Patent number: 11929452Abstract: A method for manufacturing a light-emitting device includes: forming a cover, which comprises: sandwiching a fixing member by a molding device, injecting a light-transmissive material into a space defined in the molding device, and hardening or curing the injected light-transmissive material, wherein the formed cover comprises an upper portion, a sidewall, and a recess, the cover being integrated with the fixing member such that the fixing member projects from a part of an outer lateral surface of the sidewall; disposing a light-transmissive member on a light extraction surface of a light-emitting element to be disposed on a substrate; and disposing the cover so that the light-emitting element is housed in the recess. The fixing member is formed of a material that is deformable due to a pressing force generated in the event of an engagement with a counterpart member.Type: GrantFiled: December 20, 2022Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Tsuyoshi Okahisa, Tomohito Shinomiya, Daizo Kiba
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Patent number: 11929294Abstract: A composite substrate includes a base layer formed of a composite material containing diamond and a metal, the base layer a first surface, and a second surface opposite to the first surface; a flat layer having a lower surface bonded to the first surface of the base layer, and an upper surface having a surface roughness Ra of 10 nm or less; and an insulating layer directly bonded to the upper surface of the flat layer.Type: GrantFiled: September 29, 2021Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Masatsugu Ichikawa, Shoichi Yamada, Takeshi Kihara, Yutaka Matsusaka
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Patent number: 11929454Abstract: A light emitting device includes: a base member having a first surface including a first region and a second region; a first frame provided on the base member and surrounding the first region; a light emitting element provided on the base member in the first region; a light-transmissive first member provided inward of the first frame, and covering the light emitting element; an electronic component provided on the base member in the second region and electrically connected with the light emitting element; and a plurality of pin holes arrayed in a first direction and electrically connected with the electronic component, the first direction being orthogonal to a thickness direction of the base member. The electronic component is provided on a side opposite the plurality of pin holes with respect to the light emitting element in a second direction that is orthogonal to the thickness direction and the first direction.Type: GrantFiled: June 11, 2021Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventors: Shinya Okura, Takanobu Sogai, Koji Oshodani
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Patent number: 11929387Abstract: A light emission device includes: a wiring board; a plurality of light-emitting elements being disposed on the wiring board and electrically connected to a wiring layer of the wiring board; a first light diffusing member being disposed on the wiring board, the first light diffusing member having a plurality of throughholes and containing a light-diffusive material, each of the plurality of light-emitting elements being disposed in a corresponding one of the plurality of throughholes; a plurality of second light diffusing members covering the plurality of light-emitting elements and being disposed in the plurality of throughholes, each second light diffusing member containing a light-diffusive material, such that a content ratio of the light-diffusive material in each second light diffusing member is higher than a content ratio of the light-diffusive material in the first light diffusing member; and a wavelength converting member.Type: GrantFiled: August 11, 2022Date of Patent: March 12, 2024Assignee: NICHIA CORPORATIONInventor: Noriaki Hiraide
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Publication number: 20240076541Abstract: A resin composition includes a silicone resin, a Mn-activated fluoride phosphor, and a chelating agent. The chelating agent may include, for example, at least one selected from the group consisting of an aminocarboxylic-acid-based chelating agent and a phosphonic-acid-based chelating agent. The light-emitting device is provided with, for example, a substrate, a light-emitting element disposed on the substrate, and a wavelength conversion member covering the light-emitting element. The wavelength conversion member of the light-emitting device includes a cured product of a silicone resin, a Mn-activated fluoride phosphor, and a chelating agent.Type: ApplicationFiled: August 7, 2023Publication date: March 7, 2024Applicant: NICHIA CORPORATIONInventor: Hyogo YAGI
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Publication number: 20240076516Abstract: Provided is an ink composition for screen printing that does not easily allow the generation of a printing defect or a rough surface portion in a printed matter even in the case of forming the printed matter having a thick thickness. An ink composition for screen printing containing (a) a rubber-forming component, (b) a crosslinking agent, (c) a main solvent that dissolves the rubber-forming component and (d) a poor solvent that dissolves in the main solvent but does not dissolve in the rubber-forming component, in which a viscosity (0.1/s) obtained with an E-type viscometer at a temperature of 25° C. is 300 to 50000 Pa·s, a viscosity (10/s) obtained with the E-type viscometer at a temperature of 25° C. is 50 to 1500 Pa·s, and a loss tangent (0.1 rad/s) obtained with the E-type viscometer at a temperature of 25° C. is 10 to 20.Type: ApplicationFiled: December 28, 2021Publication date: March 7, 2024Applicant: NICHIAS CORPORATIONInventors: Kohei Ohyoshi, Taira Yoshida
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Publication number: 20240079513Abstract: A package includes: a bottom portion having a mounting surface; and a lateral wall portion having a top surface and including: a lateral wall having a rectangular outer shape in a top view and surrounding the mounting surface, and a stepped portion formed along the lateral wall below the top surface. In the top view, the stepped portion includes a wide portion and a narrow portion that are two regions having different widths. The narrow portion is formed on a portion along a one side of an entire circumference of the lateral wall.Type: ApplicationFiled: April 27, 2023Publication date: March 7, 2024Applicant: NICHIA CORPORATIONInventors: Takuya HASHIMOTO, Soichiro MIURA
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Publication number: 20240076542Abstract: A sintered body includes an aluminum oxide phase and crystal agglomerated particles containing a rare earth aluminate fluorescent material crystal phase, wherein the aluminum oxide phase is disposed around the crystal agglomerated particles. A method for producing a sintered body includes: providing a first mixture obtained by wet mixing raw materials and then drying; dry mixing the first mixture and aluminum oxide particles; molding a mixture obtained by dry mixing the first raw material mixture and the aluminum oxide particles; and calcining a molded body obtained by molding the mixture.Type: ApplicationFiled: August 24, 2023Publication date: March 7, 2024Applicant: NICHIA CORPORATIONInventors: Ryo YAMAMOTO, Shozo TAKETOMI
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Publication number: 20240079517Abstract: A light emitting element includes: a semiconductor structure including: a substrate, an n-side nitride semiconductor layer located on the substrate, and a p-side nitride semiconductor layer located on the n-side nitride semiconductor layer, wherein a p-side nitride semiconductor side of the semiconductor structure is a light extraction face side, and an n-side nitride semiconductor side of the semiconductor structure is a mounting face side; a first protective layer located on and in direct contact with an upper face of the p-side nitride semiconductor layer in a region corresponding to the peripheral portion of the p-side nitride semiconductor layer; and a current diffusion layer located on and in direct contact with an upper face of the p-side nitride semiconductor layer in a region corresponding to the area inside of the peripheral portion. The current diffusion layer does not overlap the first protective layer in a top view.Type: ApplicationFiled: November 13, 2023Publication date: March 7, 2024Applicant: NICHIA CORPORATIONInventors: Shun KITAHAMA, Yoshiki INOUE, Kazuhiro NAGAMINE, Junya NARITA
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Patent number: 11920068Abstract: A method of manufacturing a wavelength conversion member that includes a sintered body having a light incidence face, a light emission face, and a light reflecting face different from the light incidence face and the light emission face, the method comprising: providing a sintered body containing inorganic particles and phosphor particles, and forming a plurality of recessed portions on the light reflecting face of the sintered body, which comprises acid treating the sintered body.Type: GrantFiled: July 9, 2021Date of Patent: March 5, 2024Assignee: NICHIA CORPORATIONInventor: Toshiaki Yamashita
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Patent number: 11920781Abstract: A lighting device that includes a light source, a first optical element configured to convert light emitted from the light source into substantially parallel light, and a plurality of second optical elements arranged in a first direction. Each of the plurality of second optical elements has a light incident surface. Each of the plurality of second optical elements guides at least a portion of the substantially parallel light incident on the light incident surface in a second direction intersecting the first direction and guides another portion in the first direction.Type: GrantFiled: September 14, 2022Date of Patent: March 5, 2024Assignee: NICHIA CORPORATIONInventors: Yoshio Okamoto, Hiroshi Miyairi
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Patent number: 11923488Abstract: A light emitting device includes: a light emitting element having a top surface; and a light-transmissive member covering at least the top surface of the light emitting element, the light-transmissive member having a principal surface located above the top surface of the light emitting element. The principal surface of the light-transmissive member comprises a plurality of concave portions.Type: GrantFiled: June 18, 2021Date of Patent: March 5, 2024Assignee: NICHIA CORPORATIONInventors: Naoki Musashi, Takayoshi Wakaki
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Patent number: 11920072Abstract: A method for producing a rare earth aluminate sintered body includes: preparing a molded body by mixing a fluorescent material having a composition of a rare earth aluminate and a raw material mixture comprising an oxide containing at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb, an oxide containing Ce, an oxide containing Al, and optionally an oxide containing at least one element M1 selected from the group consisting of Ga and Sc; and calcining the molded body to obtain a sintered body.Type: GrantFiled: April 10, 2020Date of Patent: March 5, 2024Assignee: NICHIA CORPORATIONInventors: Masaki Kondo, Shozo Taketomi, Hirofumi Oguri
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Patent number: 11924937Abstract: A light-emitting device includes an optical member including first and second light emitting elements, first and second light condenser portions, and a light guide portion. The first light condenser portion is disposed at a position corresponding to the first light-emitting element, and condenses a portion of light emitted from the first light-emitting element. The second light condenser portion surrounds the first light condenser portion, and condenses a portion of the light that is not incident to the first light condenser portion among the light emitted from the first light-emitting element. The light guide portion is disposed at a periphery of the second light condenser portion and at a position corresponding to the second light-emitting element, and guides light emitted from the second light-emitting element by causing total reflection in an interior of the light guide portion.Type: GrantFiled: May 21, 2021Date of Patent: March 5, 2024Assignee: NICHIA CORPORATIONInventors: Kohei Shima, Yohei Kawano, Akira Asano