Title:
WHITE LIGHT-EMITTING DEVICE AND LED LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2022104485
Kind Code:
A
Abstract:
To provide a white light-emitting device for human-oriented lighting and an LED lighting device using the white light-emitting device.SOLUTION: A white light-emitting device according the present invention comprises blue light-emitting diodes which emit blue light with a peak wavelength range of 440 nm to 455 nm, a first wavelength conversion substance which is excited by blue light to emit first light with a peak wavelength range of 535 nm to 550 nm and a half width equal to or less than 60 nm, and a second wavelength conversion substance which is excited by blue light to emit a second light with a peak wavelength range of 620 nm to 660nm, a melanopic photopic ratio of the white light emitted from the white light-emitting device being equal to or less than 0.65, and a color rendering index (CRI) thereof being equal to or greater than 80.SELECTED DRAWING: Figure 2
Inventors:
KIN SEIMIN
KIM CHOHUI
YUN JEONGEUN
LEE SEULGEE
CHOI SEONG WOO
OH JEONGROK
YOON CHULSOO
KIM CHOHUI
YUN JEONGEUN
LEE SEULGEE
CHOI SEONG WOO
OH JEONGROK
YOON CHULSOO
Application Number:
JP2021028482A
Publication Date:
July 08, 2022
Filing Date:
February 25, 2021
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD
International Classes:
H01L33/50; A61M21/02; F21K9/233; F21V9/38; F21V23/00
Attorney, Agent or Firm:
Kyosei International Patent Office
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