Invention Grant
- Patent Title: White light source system
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Application No.: US17897230Application Date: 2022-08-29
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Publication No.: US11721675B2Publication Date: 2023-08-08
- Inventor: Masahiko Yamakawa , Noriaki Yagi , Kumpei Kobayashi
- Applicant: SEOUL SEMICONDUCTOR CO., LTD.
- Applicant Address: KR Ansan-si
- Assignee: Seoul Semiconductor Co., Ltd.
- Current Assignee: Seoul Semiconductor Co., Ltd.
- Current Assignee Address: KR Ansan-si
- Agency: H.C. Park & Associates, PLC
- Priority: JP 15126776 2015.06.24 JP 16082968 2016.04.18
- Main IPC: H01L33/54
- IPC: H01L33/54 ; H01L25/075 ; H05B45/20 ; H05B47/10 ; H05B47/16 ; F21S2/00 ; H01L33/00 ; H01L33/50 ; H01L33/56 ; F21W131/405 ; F21Y115/10 ; F21Y113/13

Abstract:
A light emitting device including a substrate, a first light emitter to emit light having a first color temperature, and a second light emitter to emit light having a second color temperature, in which the first light emitter has a first converter including first phosphors and a first resin, each first phosphor having different half-value widths, the second light emitter has a second converter including second phosphors and a second resin, each second phosphor having different peak wavelengths, at least one phosphor of the first converter has a half-value width of 33 nm to 110 nm, a distance between peak wavelengths of at least two phosphors of the second converter is 150 nm or less, at least one phosphor of the first converter has a particle size of 5 um to 50 um, and a thickness of the second converter is in 0.07 mm to 1.5 mm.
Public/Granted literature
- US20230005889A1 WHITE LIGHT SOURCE SYSTEM Public/Granted day:2023-01-05
Information query
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