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公开(公告)号：US11908980B2
公开(公告)日：2024-02-20
申请号：US17744361
申请日：2022-05-13
申请人： Nichia Corporation
发明人： Tadaaki Ikeda , Yukiko Yokote
IPC分类号： H01L33/50 , H01L33/48 , H01L33/60 , H01L33/62 , H01L25/075
CPC分类号： H01L33/505 , H01L33/486 , H01L33/60 , H01L33/62
摘要： A light emitting device includes: a mounting substrate comprising a mounting substrate first surface; a first light emitting element configured to emit light having a first peak wavelength; a second light emitting element configured to emit light having a second peak wavelength longer than the first peak wavelength; a first light-transmissive member; and a first wavelength converting member located on the first light-transmissive member.
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公开(公告)号：US11677053B2
公开(公告)日：2023-06-13
申请号：US17233767
申请日：2021-04-19
申请人： NICHIA CORPORATION
发明人： Yoshiki Inoue , Naoto Furuha , Tadaaki Ikeda
IPC分类号： H01L33/60 , H01L33/50 , H01L33/38 , H01L33/62 , H01L25/075
CPC分类号： H01L33/60 , H01L25/0756 , H01L33/38 , H01L33/505 , H01L33/62 , H01L2933/0033 , H01L2933/0041 , H01L2933/0058 , H01L2933/0091
摘要： A method of manufacturing a light emitting element includes: providing a first light emitting part and a second light emitting part, the first light emitting part comprising a first base member and a first semiconductor layered body, the second light emitting part comprising a second base member and a second semiconductor layered body; bonding the first and second light emitting parts to each other such that the first base member and the second base member are disposed between the first semiconductor layered body and the second semiconductor layered body; disposing a light reflecting member to cover the bonded first and second light emitting parts; removing a portion of the light reflecting member to expose surfaces of the first and second base members; and disposing a wavelength conversion member on the exposed surface of the first base member and the exposed surface of the second base member.
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公开(公告)号：US11664356B2
公开(公告)日：2023-05-30
申请号：US17209015
申请日：2021-03-22
申请人： NICHIA CORPORATION
IPC分类号： H01L25/075 , H01L33/58 , H01L33/54 , F21V8/00 , H01L33/50
CPC分类号： H01L25/0753 , H01L33/54 , H01L33/58 , G02B6/0073 , H01L33/502 , H01L33/505 , H01L2933/0091
摘要： A light emitting device includes light emitting elements, light-transmissive members, a covering member, at least one first protrusion, and two second protrusions. The light emitting elements are aligned in a first direction. The light-transmissive members are respectively disposed on upper surfaces of the light emitting elements. The covering member includes at least one first covering portion and two second covering portions. The at least one first covering portion is arranged between adjacent ones of the light-transmissive members, and the second covering portions are arranged at distal ends of the light emitting device in the first direction with the light-transmissive members being arranged between the second covering portions. The at least one first protrusion is arranged on an upper surface of the at least one first covering portion and being spaced apart from the light-transmissive members. The second protrusions respectively arranged on upper surfaces of the second covering portions.
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公开(公告)号：US11495587B2
公开(公告)日：2022-11-08
申请号：US16584092
申请日：2019-09-26
申请人： NICHIA CORPORATION
摘要： A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.
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公开(公告)号：US11677048B2
公开(公告)日：2023-06-13
申请号：US17086975
申请日：2020-11-02
申请人： NICHIA CORPORATION
CPC分类号： H01L33/502 , C09K11/617 , H01L25/0753 , H01L33/58 , H01L33/60 , H01L33/62 , H01L33/647 , H01L2933/0091
摘要： A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles. The second light-transmissive layer contains a third matrix and second diffusive particles.
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公开(公告)号：US11189758B2
公开(公告)日：2021-11-30
申请号：US16519809
申请日：2019-07-23
申请人： NICHIA CORPORATION
发明人： Takuya Nakabayashi , Yukiko Yokote , Tadaaki Ikeda
IPC分类号： H01L33/50 , H01L33/10 , F21K9/68 , F21K9/61 , H01L25/075
摘要： A light-emitting device has a longitudinal direction and a width direction perpendicular to the longitudinal direction, and includes a first light-emitting element, a second light-emitting element having a peak emission wavelength different from a peak emission wavelength of the first light-emitting element and being aligned with the first light-emitting element in the longitudinal direction, a light-transmissive member covering a first element light extracting surface and a second element light extracting surface such that a portion of a light-guide member is located between the light-transmissive member and each of the first element light extracting surface and the second element light extracting surface, a first reflective member surrounding the first light-emitting element, the second light-emitting element, and the light-guide member in a top view, and a first inclined member between the first light-emitting element and the first reflective member in the longitudinal direction and having an inclined surface inclined relative to the light-transmissive member. The first inclined member is spaced apart from the light-transmissive member.
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公开(公告)号：US10707384B2
公开(公告)日：2020-07-07
申请号：US16027950
申请日：2018-07-05
申请人： NICHIA CORPORATION
发明人： Takuya Nakabayashi , Tadaaki Ikeda
摘要： A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.
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公开(公告)号：US10270011B2
公开(公告)日：2019-04-23
申请号：US15468540
申请日：2017-03-24
申请人： NICHIA CORPORATION
摘要： 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.
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公开(公告)号：US10096751B2
公开(公告)日：2018-10-09
申请号：US15479854
申请日：2017-04-05
申请人： NICHIA CORPORATION
发明人： Tadaaki Ikeda , Takuya Nakabayashi
IPC分类号： H01L27/15 , H01L33/50 , H01L33/56 , H01L33/60 , C09K11/61 , C09K11/77 , C09K11/08 , C09K11/02 , C08K3/34
摘要： A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.
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公开(公告)号：US11362241B2
公开(公告)日：2022-06-14
申请号：US17029957
申请日：2020-09-23
申请人： NICHIA CORPORATION
发明人： Tadaaki Ikeda , Yukiko Yokote
IPC分类号： H01L33/50 , H01L33/48 , H01L33/60 , H01L33/62 , H01L25/075
摘要： A light emitting device includes a first light emitting element, a second light emitting element, a first light-transmissive member, and a first wavelength converting member. The first light emitting element has a first light emitting element first surface at which a first n-side electrode and a first p-side electrode are disposed, and a first light emitting element second surface. The second light emitting element has a second light emitting element first surface at which a second n-side electrode and a second p-side electrode are disposed, and a second light emitting element second surface. The first light-transmissive member covers the first light emitting element fourth surface of the first light emitting element and a second light emitting element fourth surface of the second light emitting element. The first wavelength converting member is disposed on the first light-transmissive member.
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