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:
Aug. 30, 2011
Filed:
Sep. 22, 2007
Applicants:
LI Xu, Saratoga, CA (US);
Yi LI, Pleasanton, CA (US);
Assignee:
YLX, Ltd., George Town, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/062 (2006.01); H01L 31/113 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light source with enhanced brightness includes an angle-selective optical filter and a light emitting diode (LED) having a high reflective layer. The angle-selective filter is located on the top surface of emitting diode to pass lights at specified angles. According to one embodiment, the angle-selective filter includes index-alternating layers. With a reflective polarizer, the light source can produce polarized light with enhanced brightness.