- 专利标题: Light-emitting device
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申请号: US17302248申请日: 2021-04-28
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公开(公告)号: US11637226B2公开(公告)日: 2023-04-25
- 发明人: Taiki Yuasa , Daisuke Iwakura
- 申请人: NICHIA CORPORATION
- 申请人地址: JP Anan
- 专利权人: NICHIA CORPORATION
- 当前专利权人: NICHIA CORPORATION
- 当前专利权人地址: JP Anan
- 代理机构: Hunton Andrews Kurth LLP
- 优先权: JPJP2017-108248 20170531
- 主分类号: H01L33/50
- IPC分类号: H01L33/50 ; H01L33/48 ; H01L33/60 ; H01L33/44 ; H01L33/46
摘要:
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.
公开/授权文献
- US20210249571A1 LIGHT-EMITTNG DEVICE 公开/授权日:2021-08-12
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