公开(公告)号：US20190319175A1

公开(公告)日：2019-10-17

申请号：US15953508

申请日：2018-04-16

Applicant: Lextar Electronics Corporation

Inventor： Cheng-Ping CHANG ,  Zong-Han YU ,  Kuo-Chan HUNG

IPC: H01L33/50

Abstract: A white light emitting device includes a blue LED chip having a dominant emission wavelength of about 440-465 nm, and a phosphor layer configured to be excited by the dominant emission wavelength of the blue LED chip. The phosphor layer includes a first phosphor having a peak emission wavelength of about 480-519 nm, a second phosphor having a peak emission wavelength of about 520-560 nm, and a third phosphor having a peak emission wavelength of about 620-670 nm. The first phosphor and the second phosphor both have a garnet structure as represented by A3B5O12:Ce, A is selected from the group consisting of Y, Lu, and a combination of thereof, and B is selected from the group consisting of Al, Ga, and a combination of thereof.

公开(公告)号：US20150055337A1

公开(公告)日：2015-02-26

申请号：US14253077

申请日：2014-04-15

Applicant: Lextar Electronics Corporation

Inventor： Liang-Ta LIN ,  Kuo-Chan HUNG

IPC: F21K99/00

CPC classification number: H01L25/0753 ,  H01L33/50 ,  H01L33/504 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Disclosed herein is a light-emitting device that includes a blue light source, a first phosphor and a red light source. The blue light source emits blue light. The first phosphor is excited by the blue light to emit light that is then combined with the blue light to produce first white light. The first white light falls in a first region of (0.397, 0.502), (0.337, 0.512), (0.26, 0.34), and (0.313, 0.3334), based on a CIE 1931 color coordinate standard. The red light source emits red light to adjust the first white light into second white light.

Abstract translation: 这里公开了一种发光装置，其包括蓝色光源，第一荧光体和红色光源。 蓝色光源发出蓝色光。 第一个荧光体被蓝光激发，发出光，然后与蓝光合并，产生第一个白光。 基于CIE1931色坐标标准，第一白光落在（0.397,0.502），（0.337,0.512），（0.26,0.334）和（0.313,0.33334）的第一区域。 红光源发出红光，将第一个白光调到第二个白光。