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公开(公告)号：US20160126428A1
公开(公告)日：2016-05-05
申请号：US14926476
申请日：2015-10-29
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Kimihiro MIYAMOTO , Daisuke IWAKURA
CPC classification number: H01L33/502 , H01L33/54 , H01L2224/48247 , H01L2224/48257 , H01L2224/73265 , H01L2224/8592 , H01L2933/0091
Abstract: A light emitting device is provided which includes a light emitting element, a phosphor, and a sealing member. The light emitting element has a light emission peak wavelength in the range not shorter than 400 nm and not longer than 460 nm. The phosphor can be excited by light from the light emitting element, and emit luminescent radiation with a light emission peak wavelength in the range in not shorter than 600 nm and not longer than 700 nm. The sealing member includes a pigment for absorbing a part of the light from the light emitting element. X of the light emission chromaticity of the light emitting device falls within the range of x≧0.600 in the chromaticity coordinates in the CIE 1931 color space chromaticity diagram.
Abstract translation: 提供一种发光器件，其包括发光元件，荧光体和密封构件。 发光元件的发光峰值波长在不小于400nm且不大于460nm的范围内。 荧光体可以由来自发光元件的光激发，并发射发光峰值波长在不小于600nm且不大于700nm的范围内的发光辐射。 密封构件包括用于吸收来自发光元件的一部分光的颜料。 发光装置的发光色度的X在CIE1931色空间色度图中的色度坐标中落在x≥0.600的范围内。
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公开(公告)号：US20160091655A1
公开(公告)日：2016-03-31
申请号：US14869171
申请日：2015-09-29
Applicant: NICHIA CORPORATION
Inventor： Yusaku ACHI , Daisuke IWAKURA
IPC: F21V8/00
CPC classification number: G02B6/0068 , G02B6/0023
Abstract: A backlight device includes a light guide plate having an incident surface, a first side surface, and a second side surface. The first side surface extends from a first end of the incident surface and the second side surface extends from a second end of the incident surface. A green illuminant faces the incident surface and emits a green light toward the incident surface. A red illuminant faces the incident surface and emits a red light toward the incident surface. A white illuminant disposed on a side of at least one end of the first and second ends of the incident surface emits a white light toward the light guide plate. At least one of the emitted green light and the emitted red light includes a blue component having an emission peak wavelength in a range of 420 to 500 nm.
Abstract translation: 背光源装置包括具有入射面的导光板，第一侧面和第二侧面。 第一侧表面从入射表面的第一端延伸，第二侧表面从入射表面的第二端延伸。 绿色光源面对入射面，向入射面发出绿色光。 红色光源面向入射面，向入射面发出红色光。 设置在入射表面的第一和第二端的至少一端的一侧的白色发光体朝向导光板发射白色光。 所发射的绿光和发射的红光中的至少一个包括具有420-500nm范围内的发射峰值波长的蓝色分量。
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公开(公告)号：US20190259916A1
公开(公告)日：2019-08-22
申请号：US16280045
申请日：2019-02-20
Applicant: NICHIA CORPORATION
Inventor： Daisuke IWAKURA , Yoshiki INOUE
Abstract: A light emitting device includes a light-transmissive member including a first surface, a second surface opposite to the first surface, and third surfaces connected to the first surface and the second surface. A phosphor layer faces the second surface of the light-transmissive member. A reflective member faces side surfaces of the phosphor layer and the third surfaces of the light-transmissive member. The light-emitting element has a top surface facing the phosphor layer, a bottom surface opposite to the top surface, and side surfaces connecting the top surface and the bottom surface. The phosphor layer has a bonding surface facing the light emitting element. A first dielectric multilayer film is arranged on at least one of side surfaces of the light-emitting element without being provided on the bonding surface of the phosphor layer.
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公开(公告)号：US20180182917A1
公开(公告)日：2018-06-28
申请号：US15851636
申请日：2017-12-21
Applicant: NICHIA CORPORATION
Inventor： Masafumi KURAMOTO , Daisuke IWAKURA
Abstract: A method for manufacturing a light emitting device includes placing a light emitting element on a releasable base material so that a first face of the light emitting element is in contact with the releasable base material. An entire area of the first face is a first area. A wavelength converting material is provided on the releasable base material to cover an entirety of the light emitting element. The releasable base material is removed. A first electrically conductive material covers the first electrode and the wavelength converting material. An entire area of the first electrically conductive material viewed in a height direction is a second area larger than the first area. A second electrically conductive material covers the second electrode and the wavelength converting material. An entire area of the second electrically conductive material viewed in the height direction is a third area larger than the first area.
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公开(公告)号：US20170090095A1
公开(公告)日：2017-03-30
申请号：US15277498
申请日：2016-09-27
Applicant: NICHIA CORPORATION
Inventor： Daisuke IWAKURA , Masaki HAYASHI , Shoji HOSOKAWA , Yusaku ACHI
CPC classification number: H01L33/50 , G02B6/0031 , G02B6/0073 , G02F1/133603 , G02F1/133615 , G02F2001/133614 , G02F2001/133624 , H01L33/44 , H01L33/52 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2924/00014
Abstract: A light source device having; a blue light emitting element that emits blue light having an emission peak in a wavelength region of 440 nm to 460 nm; a green phosphor that absorbs part of the blue light emitted by the blue light emitting element and thereby emits green light having an emission peak in a wavelength region of 500 nm to 575 nm; a red phosphor that absorbs at least one of part of the blue light emitted by the blue light emitting element and part of the green light emitted by the green phosphor, and thereby emits red light having an emission peak in a wavelength region of 600 nm to 690 nm; and an absorbent containing neodymium fluoride that absorbs part of the green light and part of the red light.
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Patent Agency Ranking
公开(公告)号：US20250098389A1
公开(公告)日：2025-03-20
申请号：US18883216
申请日：2024-09-12
Applicant: NICHIA CORPORATION
Inventor： Norifumi SASAOKA , Shoichi YAMADA , Kunihiro IZUNO , Daisuke IWAKURA , Yoshiyuki KAGEYAMA , Hiroaki KURODA
IPC: H01L33/64 , H01L25/075
Abstract: A substrate includes a first member having a through hole extending from an upper surface to a lower surface thereof, and a second member disposed inside the through hole. The second member includes a first region containing graphite, a second region located outward of the first region in a top view, containing graphite and a thermally conductive material that contains at least one of a metal or a ceramic, and having a volume fraction of the graphite lower than a volume fraction of the graphite in the first region, and a third region located outward of the second region in the top view, containing a thermally conductive material that contains at least one of a metal or a ceramic, and having a volume fraction of the thermally conductive material higher than a volume fraction of the thermally conductive material in the second region.
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公开(公告)号：US20220316682A1
公开(公告)日：2022-10-06
申请号：US17837746
申请日：2022-06-10
Applicant: NICHIA CORPORATION
Inventor： Daisuke IWAKURA
Abstract: A light-emitting module includes: a light source; a light guide plate including an upper surface and a lower surface, the lower surface being at a side opposite to the upper surface, the light guide plate being configured to guide light from the light source; a wavelength conversion sheet located at an upper surface side of the light guide plate; a first light-reflective member located at a lower surface side of the light guide plate, the first light-reflective member including: a first resin member, and a first reflector, where a refractive index of the first reflector is lower than a refractive index of the first resin member; and a second light-reflective member located at a lower surface side of the first light-reflective member, wherein the second light-reflective member includes: a second resin member, and a second reflector, where a refractive index of the second reflector is higher than a refractive index of the second resin member.
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公开(公告)号：US20210249571A1
公开(公告)日：2021-08-12
申请号：US17302248
申请日：2021-04-28
Applicant: NICHIA CORPORATION
Inventor： Taiki YUASA , Daisuke IWAKURA
Abstract: A light-emitting device includes: a set of layers including (i) a light-transmissive member having a top surface, a bottom surface, and a lateral surface contiguous with the top surface and the bottom surface, (ii) a first phosphor layer disposed below the bottom surface, and (iii) a dielectric multilayer film between the light-transmissive member and the first phosphor layer; a cover layer disposed on a lateral surface of the set of layers; and a light-emitting element disposed below the first phosphor layer. The light-emitting element emits blue light. The first phosphor layer absorbs at least a portion of the blue light and emits yellow-red to red light. The cover layer is either: a second phosphor layer that absorbs at least a portion of the blue light emitted by the light-emitting element and emits yellow-red to red light, or a pigment layer that presents yellow-red to red light.
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公开(公告)号：US20180033922A1
公开(公告)日：2018-02-01
申请号：US15662287
申请日：2017-07-28
Applicant: NICHIA CORPORATION
Inventor： Daisuke IWAKURA
CPC classification number: H01L33/504 , H01L33/46 , H01L33/508 , H01L33/60 , H01L33/62 , H01L2224/32245 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2224/49107 , H01L2224/73265 , H01L2933/0033 , H01L2933/0041 , H01L2933/005 , H01L2933/0058 , H01L2924/00014 , H01L2924/00
Abstract: A light emitting device includes a light emitting element to emit a first light having a first peak wavelength. A second wavelength converting member contains a second phosphor to convert the first light into a third light having a third peak wavelength longer than the first peak wavelength and shorter than a second peak wavelength. The second wavelength converting member includes a portion in which the second wavelength converting member has a first concentration of the second phosphor at a height of an upper surface of the light emitting element in a height direction and a second concentration of the second phosphor at a height of a lower surface of the light emitting element in the height direction. The second concentration is higher than the first concentration such that the second phosphor reflects the second light.
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公开(公告)号：US20220026043A1
公开(公告)日：2022-01-27
申请号：US17374066
申请日：2021-07-13
Applicant: NICHIA CORPORATION
Inventor： Daisuke IWAKURA
Abstract: A light-emitting module includes: a light source; a light guide plate including an upper surface and a lower surface, the lower surface being at a side opposite to the upper surface, the light guide plate being configured to guide light from the light source; a first light-reflective member located at a lower surface side of the light guide plate, wherein the first light-reflective member includes: a first resin member, and a first reflector, wherein a refractive index of the first reflector is lower than a refractive index of the first resin member; and a second light-reflective member located at a lower surface side of the first light-reflective member, wherein the second light-reflective member includes: a second resin member, and a second reflector, wherein a refractive index of the second reflector is higher than a refractive index of the second resin member.
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