Invention Grant
- Patent Title: White light emitting device having high color rendering
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Application No.: US14917380Application Date: 2014-08-18
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Publication No.: US10020428B2Publication Date: 2018-07-10
- Inventor: Han Do Kim
- Applicant: GLBTECH CO., LTD.
- Applicant Address: KR Gyeonggi-do
- Assignee: GLBTECH CO., LTD.
- Current Assignee: GLBTECH CO., LTD.
- Current Assignee Address: KR Gyeonggi-do
- Agency: Barcelo, Harrison & Walker, LLP
- Priority: KR10-2013-0117971 20131002; KR10-2014-0071997 20140613
- International Application: PCT/KR2014/007614 WO 20140818
- International Announcement: WO2015/050317 WO 20150409
- Main IPC: H01L33/50
- IPC: H01L33/50 ; C09K11/08 ; C09K11/77 ; C09K11/02

Abstract:
The present invention relates to a white light emitting device having high color rendering, and the white light emitting device is a white light emitting lamp comprising a blue LED chip having an excitation wavelength of 440-460 nm, and a phosphor layer covering a light emitting surface of the blue LED chip and excited by the excitation wavelength of the blue LED chip so as to emit light, wherein the phosphor layer comprises a first phosphor having an emission peak wavelength of 480-499 nm; a second phosphor having an emission peak wavelength of 500-560 nm; and a third phosphor having an emission peak wavelength of 600-650 nm. According to aspects of the present invention, a white LED chip having high color rendering can be provided, and particularly, the white light emitting device having high color rendering for specific colors such as R9 and R12 can be provided.
Public/Granted literature
- US20160218255A1 WHITE LIGHT EMITTING DEVICE HAVING HIGH COLOR RENDERING Public/Granted day:2016-07-28
Information query
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