Invention Grant
- Patent Title: Light emitting device
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Application No.: US16167471Application Date: 2018-10-22
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Publication No.: US10559725B2Publication Date: 2020-02-11
- 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: JP2016-104853 20160526; JP2017-092899 20170509
- Main IPC: H01L33/50
- IPC: H01L33/50 ; C09K11/08 ; C09K11/77 ; H01L33/48 ; H01L33/52

Abstract:
A light emitting device includes a light emitting element having a peak emission wavelength of 410 nm to 440 nm and a phosphor member. The phosphor member includes a first phosphor having a peak emission wavelength of 430 nm to 500 nm and containing an alkaline-earth phosphate, a second phosphor having a peak emission wavelength of 440 nm to 550 nm and containing at least one of an alkaline-earth aluminate and a silicate containing Ca, Mg, and Cl, a third phosphor having a peak emission wavelength of 500 nm to 600 nm and containing a rare-earth aluminate, a fourth phosphor having a peak emission wavelength of 610 nm to 650 nm and containing a silicon nitride containing Al and at least one of Sr and Ca, and a fifth phosphor having a peak emission wavelength of 650 nm to 670 nm and containing a fluorogermanate.
Public/Granted literature
- US20190067531A1 LIGHT EMITTING DEVICE Public/Granted day:2019-02-28
Information query
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