Invention Grant
- Patent Title: White light emitting device and white light source module using the same
- Patent Title (中): 白光发射装置和白光源模块使用相同
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Application No.: US13661346Application Date: 2012-10-26
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Publication No.: US09392670B2Publication Date: 2016-07-12
- Inventor: Chul Hee Yoo , Young June Jeong , Young Sam Park , Seong Yeon Han , Ho Yeon Kim , Hun Joo Hahm , Hyung Suk Kim
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-Si, Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-Si, Gyeonggi-Do
- Priority: KR10-2006-0122631 20061205; KR10-2007-0012112 20070206
- Main IPC: F21V9/00
- IPC: F21V9/00 ; H05B33/12 ; C09K11/08 ; C09K11/77 ; H01L33/50 ; F21K99/00 ; G02F1/1335

Abstract:
A white light emitting device including: a blue light emitting diode chip having a dominant wavelength of 443 to 455 nm; a red phosphor disposed around the blue light emitting diode chip, the red phosphor excited by the blue light emitting diode chip to emit red light; and a green phosphor disposed around the blue light emitting diode chip, the green phosphor excited by the blue light emitting diode chip to emit green light, wherein the red light emitted from the red phosphor has a color coordinate falling within a space defined by four coordinate points (0.5448, 0.4544), (0.7079, 0.2920), (0.6427, 0.2905) and (0.4794, 0.4633) based on the CIE 1931 chromaticity diagram, and the green light emitted from the green phosphor has a color coordinate falling within a space defined by four coordinate points (0.1270, 0.8037), (0.4117, 0.5861), (0.4197, 0.5316) and (0.2555, 0.5030) based on the CIE 1931 color chromaticity diagram.
Public/Granted literature
- US20130258211A1 WHITE LIGHT EMITTING DEVICE AND WHITE LIGHT SOURCE MODULE USING THE SAME Public/Granted day:2013-10-03
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