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:
Apr. 19, 2022
Filed:
Nov. 01, 2018
Applicant:
Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan, CN;
Inventor:
Yuan Gao, Wuhan, CN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/77 (2006.01);
U.S. Cl.
CPC ...
C09K 11/7797 (2013.01);
Abstract
A borate fluorescent powder and a preparing method thereof are provided. The formula of the borate fluorescent powder is BaSrLuLCeTbEuBO. L is one or any combination of the elements Gd, La, and Sc. Ranges of x, y, z, m, and n are respectively 0<x≤0.6, 0<y≤3, 0<z≤0.4, 0≤m≤1, and 0≤n≤0.5. The borate fluorescent powder provided has a stable crystalline phase, high luminous efficiency, and decent thermal stability, and can be applied to ultraviolet LEDs or near-ultraviolet LEDs to construct white LEDs.