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:
May. 05, 2020
Filed:
Sep. 11, 2019
Applicant:
The Regents of the University of California, Oakland, CA (US);
Inventors:
Shuji Nakamura, Santa Barbara, CA (US);
Steven P. DenBaars, Goleta, CA (US);
Hirokuni Asamizu, Goleta, CA (US);
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/62 (2010.01); G02B 19/00 (2006.01); H01L 33/58 (2010.01); H01L 33/54 (2010.01); H01L 33/22 (2010.01); H01L 33/60 (2010.01); H01L 33/38 (2010.01);
U.S. Cl.
CPC ...
H01L 33/62 (2013.01); G02B 19/0028 (2013.01); G02B 19/0061 (2013.01); H01L 33/22 (2013.01); H01L 33/54 (2013.01); H01L 33/58 (2013.01); H01L 33/387 (2013.01); H01L 33/60 (2013.01); H01L 2224/0554 (2013.01); H01L 2224/05568 (2013.01); H01L 2224/05573 (2013.01); H01L 2224/16245 (2013.01); H01L 2224/48247 (2013.01); H01L 2224/48257 (2013.01); H01L 2224/49107 (2013.01); H01L 2224/73265 (2013.01); H01L 2924/00014 (2013.01); H01L 2924/1815 (2013.01); H01L 2933/0091 (2013.01);
Abstract
A transparent light emitting diode (LED) includes a plurality of III-nitride layers, including an active region that emits light, wherein all of the layers except for the active region are transparent for an emission wavelength of the light, such that the light is extracted effectively through all of the layers and in multiple directions through the layers. Moreover, the surface of one or more of the III-nitride layers may be roughened, textured, patterned or shaped to enhance light extraction.