Invention Grant
- Patent Title: Light emitting device
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Application No.: US15435603Application Date: 2017-02-17
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Publication No.: US10256374B2Publication Date: 2019-04-09
- Inventor: Kenji Asai
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan-shi
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan-shi
- Agency: Hunton Andrews Kurth LLP
- Priority: JP2016-041727 20160304; JP2016-050496 20160315; JP2016-090013 20160428
- Main IPC: H01L33/50
- IPC: H01L33/50 ; H01L33/32 ; C09K11/77 ; C09K11/66 ; C09K11/08

Abstract:
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.
Public/Granted literature
- US20170256684A1 LIGHT EMITTING DEVICE Public/Granted day:2017-09-07
Information query
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