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. 07, 2014
Filed:
Sep. 29, 2011
Applicants:
Jeff Ramer, Fremont, CA (US);
Steve Ting, Dublin, CA (US);
Inventors:
Jeff Ramer, Fremont, CA (US);
Steve Ting, Dublin, CA (US);
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 33/32 (2010.01); H01L 33/40 (2010.01);
U.S. Cl.
CPC ...
Abstract
A light emitting device comprises a first layer having an n-type Group III-V semiconductor, a second layer adjacent to the first layer, the second layer comprising an active material that generates light upon the recombination of electrons and holes. The active material in some cases has one or more V-pits at a density between about 1 V-pit/μmand 30 V-pits/μm. The light emitting device includes a third layer adjacent to the second layer, the third layer comprising a p-type Group III-V semiconductor.