公开(公告)号：US09392670B2

公开(公告)日：2016-07-12

申请号：US13661346

申请日：2012-10-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chul Hee Yoo ,  Young June Jeong ,  Young Sam Park ,  Seong Yeon Han ,  Ho Yeon Kim ,  Hun Joo Hahm ,  Hyung Suk Kim

IPC: F21V9/00 ,  H05B33/12 ,  C09K11/08 ,  C09K11/77 ,  H01L33/50 ,  F21K99/00 ,  G02F1/1335

CPC classification number: H05B33/12 ,  C09K11/0883 ,  C09K11/7731 ,  C09K11/7734 ,  F21K9/00 ,  G02F1/133603 ,  G02F1/133609 ,  H01L33/504 ,  Y02B20/181

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.

Abstract translation: 一种白光发射装置，包括：主波长为443〜455nm的蓝色发光二极管芯片; 配置在蓝色发光二极管芯片周围的红色荧光体，由蓝色发光二极管芯片激发的红色荧光体发射红色光; 以及蓝色发光二极管芯片周围的绿色荧光体，由蓝色发光二极管芯片激发的绿色荧光体发出绿色光，其中，从红色荧光体发出的红色光线具有落在由四个坐标 基于CIE1931色度图的点（0.5448,0.4544），（0.7079,0.2905），（0.6427,0.2905）和（0.4794,0.44633），并且从绿色荧光体发射的绿光具有落在限定的空间内的色坐标 基于CIE 1931色度色彩图，分别为四点坐标（0.1270,0.8037），（0.4117,0.5861），（0.4197,0.5316）和（0.2555,0.5030）。