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. 20, 2010
Filed:
Feb. 28, 2007
White light-emitting device having a cap layer formed from a mixture of silicon and a phosphor blend
Applicants:
Bily Wang, Hsin Chu, TW;
Jonnie Chuang, Pan Chiao, TW;
Chuanfa Lin, Shu Lin, TW;
Chih Shan Yu, Tai Chung Hsien, TW;
Inventors:
Bily Wang, Hsin Chu, TW;
Jonnie Chuang, Pan Chiao, TW;
Chuanfa Lin, Shu Lin, TW;
Chih Shan Yu, Tai Chung Hsien, TW;
Assignee:
Harvatek Corporation, Hsin Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 61/02 (2006.01); H01J 29/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A white light source has a substrate with a blue light-emitting diode placed thereon and a cap layer enclosing the blue light-emitting diode. The cap layer includes a mixture of silicon and phosphor blend at ratio of 1:0.2-0.5. The phosphor blend includes a red phosphor, a green phosphor and a yellow phosphor.