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:
Mar. 27, 2018
Filed:
Aug. 14, 2015
Epistar Corporation, Hsinchu, TW;
Chun Che Lin, Hsinchu, TW;
Ling-Ling Wei, Hsinchu, TW;
Ru-Shi Liu, Hsinchu, TW;
Ming-Chi Hsu, Hsinchu, TW;
Ai-Sen Liu, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A phosphor, having a general formula of K[SiGe]F:Mn. The phosphor is excited to emit a light having a first main emission peak with a first maximum emission intensity and a first dominant wavelength, wherein a relative emission intensity S of the light of the phosphor is constantly greater than 85% across an temperature of the phosphor between 300 K and 470 K during operation, wherein S=(I/I)*100%, Iand Iare the first maximum emission intensity when the temperature of the phosphor is at 300 K and T during operation respectively, and 300 K<T≤470K.