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公开(公告)号：US20180114882A1
公开(公告)日：2018-04-26
申请号：US15851459
申请日：2017-12-21
Applicant: NICHIA CORPORATION
Inventor： Takaaki TADA , Takayoshi WAKAKI
CPC classification number: H01L33/44 , H01L33/005 , H01L33/0095 , H01L33/58 , H01L2224/49111 , H01L2224/49175 , H01L2224/8592 , H01L2924/19107 , H01L2933/0025 , H01L2933/0058
Abstract: A light emitting device includes: a light emitting element including: a semiconductor structure including an n-type semiconductor layer, an active layer, and a p-type semiconductor layer, each containing a nitride semiconductor, a p-electrode disposed on a portion of a surface of the p-type semiconductor layer on a side opposite to a surface provided with the active layer, and an n-electrode disposed on a surface of the n-type semiconductor layer on a side opposite to a surface provided with the active layer in a region other than a region facing the p-electrode; and a protective film continuously covering a surface of the n-electrode and a surface of the n-type semiconductor layer. The protective film includes a first metal oxide film and a second metal oxide film that are alternately layered, the first metal oxide film containing a first metal, and the second metal oxide film containing a second metal.
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公开(公告)号：US20220336722A1
公开(公告)日：2022-10-20
申请号：US17724139
申请日：2022-04-19
Applicant: NICHIA CORPORATION
Inventor： Daisuke KISHIKAWA , Takaaki TADA , Tomohisa TODA , Naoki ISHIDA , Yoshiki ENDO
Abstract: A light emitting device includes: a base having an upper face; a light emitting element mounted on the upper face of the base; one or more bonding members disposed on the upper face of the base outward of the light emitting element; a light transmissive member bonded to a portion of the upper face of the base by the one or more bonding members; and a protective film that continuously covers the light emitting element, the upper face of the base, lateral faces of the one or more bonding members, and a lower face of the light transmissive member. A gap is located between the upper face of the base and the lower face of the light transmissive member and configured to allow a space in which the light emitting element is mounted to communicate with an outside of the light emitting device, wherein the gap is defined by the upper face of the base, the lower face of the light transmissive member, and the one or more bonding members.
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公开(公告)号：US20240061159A1
公开(公告)日：2024-02-22
申请号：US18446592
申请日：2023-08-09
Applicant: NICHIA CORPORATION
Inventor： Takaaki TADA
IPC: G02B5/02
CPC classification number: G02B5/0268 , G02B5/0231 , G02B5/0221
Abstract: A method of manufacturing an optical member includes forming a first layer on a light transmissive substrate by atomic layer deposition, converting a surface layer of the first layer into a boehmite layer, and forming a second layer by atomic layer deposition so as to cover the boehmite layer. The first layer includes aluminum oxide and has a first thickness. The second layer has a second thickness less than the first thickness.
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Patent Agency Ranking
公开(公告)号：US20180342648A1
公开(公告)日：2018-11-29
申请号：US16035510
申请日：2018-07-13
Applicant: NICHIA CORPORATION
Inventor： Takaaki TADA , Takayoshi WAKAKI
CPC classification number: H01L33/44 , H01L33/005 , H01L33/0095 , H01L33/58 , H01L2224/49111 , H01L2224/49175 , H01L2224/8592 , H01L2924/19107 , H01L2933/0025 , H01L2933/0058
Abstract: A light emitting device includes: a light emitting element including: a semiconductor structure including an n-type semiconductor layer, an active layer, and a p-type semiconductor layer, each containing a nitride semiconductor, a p-electrode disposed on a portion of a surface of the p-type semiconductor layer on a side opposite to a surface provided with the active layer, and an n-electrode disposed on a surface of the n-type semiconductor layer on a side opposite to a surface provided with the active layer in a region other than a region facing the p-electrode; and a protective film continuously covering a surface of the n-electrode and a surface of the n-type semiconductor layer. The protective film includes a first metal oxide film and a second metal oxide film that are alternately layered, the first metal oxide film containing a first metal, and the second metal oxide film containing a second metal.
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公开(公告)号：US20250093010A1
公开(公告)日：2025-03-20
申请号：US18887227
申请日：2024-09-17
Applicant: NICHIA CORPORATION
Inventor： Keiji OKIDA , Takaaki TADA , Kohei KUNIMOTO
IPC: F21V3/06 , F21V5/00 , F21V5/04 , F21Y103/10
Abstract: A light transmissive member, a light source device, a method of producing a light transmissive member, and a method of producing a light source device, which can suppress occurrence of damage, are provided. The light transmissive member includes a light transmissive base member having a first surface and a second surface positioned on a side opposite to the first surface, a light transmissive first film covering the first surface, a light transmissive second film covering the second surface, and a light transmissive third film provided over the second film. The first film contains hydrous alumina. The second film contains aluminum oxide having a crystallinity lower than that of α-alumina. Hardness of the third film is higher than hardness of the second film.
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公开(公告)号：US20200098735A1
公开(公告)日：2020-03-26
申请号：US16582259
申请日：2019-09-25
Applicant: NICHIA CORPORATION
Inventor： Takaaki TADA
Abstract: A light emitting module includes red, green and blue light sources, and a light diffusing member is arranged above the light sources. The red light source includes a first light emitting element configured to emit light in a range from ultraviolet to blue, a first phosphor layer containing a first phosphor configured to emit red light, and a first film configured to transmit red light and block light in the range from ultraviolet to blue. The green light source includes a second light emitting clement configured to emit light in the range from ultraviolet to blue, a second phosphor layer containing a second phosphor configured to emit green light, and a second film configured to transmit green light and block light in the range from ultraviolet to blue. The blue light source includes a third light emitting element configured to emit light in the range from ultraviolet to blue.
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公开(公告)号：US20230100081A1
公开(公告)日：2023-03-30
申请号：US17936306
申请日：2022-09-28
Applicant: NICHIA CORPORATION
Inventor： Taekshi KUSUSE , Kazuya TAMURA , Daisuke KISHIKAWA , Takuya YAMANOI , Takaaki TADA , Kenji OZEKI
Abstract: A light emitting device includes a light emitting element and a light reflecting member that reflects light emitted from the light emitting element. The light reflecting member comprises plate-shaped light reflective particles, silica, and an alkali metal. An average particle size of the light reflective particles is 0.6 μm to 43 μm, and an average aspect ratio of the light reflective particles is 10 or higher.
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公开(公告)号：US20170162752A1
公开(公告)日：2017-06-08
申请号：US15371888
申请日：2016-12-07
Applicant: NICHIA CORPORATION
Inventor： Takaaki TADA , Takayoshi WAKAKI
CPC classification number: H01L33/44 , H01L33/005 , H01L33/0095 , H01L33/58 , H01L2224/49111 , H01L2224/49175 , H01L2224/8592 , H01L2924/19107 , H01L2933/0025 , H01L2933/0058
Abstract: A method of manufacturing a light emitting device includes providing a light emitting element; and forming a protective film on a surface of the light emitting element, wherein the step of forming the protective film includes: (i) providing first quantity of oxygen at the surface of the light emitting element, (ii) combining a first quantity of a first metal with the first quantity of oxygen, (iii) combining a second quantity of oxygen with the first quantity of metal, (iv) combining a first quantity of a second metal, different from the first metal, with the second quantity of oxygen and first quantity of the first metal, and (v) combining a third quantity of oxygen with the first quantity of the second metal.
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