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.: US12081726Application Date: 2008-04-21
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Publication No.: US07959312B2Publication Date: 2011-06-14
- Inventor: Chul Hee Yoo , Young June Jeong , Young Sam Park , Seong Yeon Han , Ho Yeon Kim , Hun Joo Hahm , Hyung Suk Kim
- Applicant: Chul Hee Yoo , Young June Jeong , Young Sam Park , Seong Yeon Han , Ho Yeon Kim , Hun Joo Hahm , Hyung Suk Kim
- Applicant Address: KR Suwon-si
- Assignee: Samsung LED Co., Ltd.
- Current Assignee: Samsung LED Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Sughrue Mion, PLLC
- Priority: KR10-2006-0122631 20061205; KR10-2007-0012112 20070206
- Main IPC: F21V9/16
- IPC: F21V9/16

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
- US20080265269A1 White light emitting device and white light source module using the same Public/Granted day:2008-10-30
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