- 专利标题: Light emitting device
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申请号: US15435603申请日: 2017-02-17
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公开(公告)号: US10256374B2公开(公告)日: 2019-04-09
- 发明人: Kenji Asai
- 申请人: NICHIA CORPORATION
- 申请人地址: JP Anan-shi
- 专利权人: NICHIA CORPORATION
- 当前专利权人: NICHIA CORPORATION
- 当前专利权人地址: JP Anan-shi
- 代理机构: Hunton Andrews Kurth LLP
- 优先权: JP2016-041727 20160304; JP2016-050496 20160315; JP2016-090013 20160428
- 主分类号: H01L33/50
- IPC分类号: H01L33/50 ; H01L33/32 ; C09K11/77 ; C09K11/66 ; C09K11/08
摘要:
A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.
公开/授权文献
- US20170256684A1 LIGHT EMITTING DEVICE 公开/授权日:2017-09-07
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