The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2019
Filed:
May. 15, 2018
Huizhou China Star Optoelectronics Technology Co.,ltd., Huizhou, Guangdong, CN;
Yong Fan, Guangdong, CN;
Guofeng Kuang, Guangdong, CN;
HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Huizhou, CN;
Abstract
Provided is a white light emitting diode, comprising a substrate, and a blue chip, a light emitting layer and an inorganic protective layer, which are sequentially disposed on the substrate, wherein a material of the light emitting layer comprises green phosphor powder, red quantum dots and a disperse medium, and the green phosphor powder comprises γ-AlON:Mn, Mggreen phosphor powder. The color gamut of white light emitting diode obtained by using γ-AlON:Mn, Mggreen phosphor powder with high color gamut, narrow half width, and slow luminance decay can reach BT.2020 80% or more, which is equivalent to the use of green quantum dots. It meets the requirements of high color gamut while reducing the use of green quantum dot materials. The reliability of white light emitting diode is improved to reduce production costs and achieve environmental protection.