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:
Oct. 21, 2014
Filed:
Sep. 06, 2007
Applicants:
Jui-kang Yen, Taipei, TW;
Yung-wei Chen, Taichung, TW;
Tien-min Liu, Fengyuan, TW;
Inventors:
Assignee:
SemiLEDS Optoelectronics Co., Ltd., Chu-Nan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
H01L 33/507 (2013.01);
Abstract
Light-emitting semiconductor devices with multiple encapsulation layers having more uniform white light when compared to conventional light-emitting devices and methods for producing the same are provided. The uniformity of the emitted white light may be quantified by comparing correlated color temperature (CCT) variations between devices, where embodiments of the present invention have a lower CCT variation when compared to conventional devices over a substantial range of light emission angles.