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. 08, 2012
Filed:
Jun. 09, 2006
John E. Epler, Milpitas, CA (US);
Michael R. Krames, Los Altos, CA (US);
Hanmin Zhao, Fremont, CA (US);
James C. Kim, San Jose, CA (US);
John E. Epler, Milpitas, CA (US);
Michael R. Krames, Los Altos, CA (US);
Hanmin Zhao, Fremont, CA (US);
James C. Kim, San Jose, CA (US);
Philips Lumileds Lighting Company, LLC, San Jose, CA (US);
Abstract
A light emitting device includes a semiconductor structure having a light emitting layer disposed between an n-type region and a p-type region. A porous region is disposed between the light emitting layer and a contact electrically connected to one of the n-type region and the p-type region. The porous region scatters light away from the absorbing contact, which may improve light extraction from the device. In some embodiments the porous region is an n-type semiconductor material such as GaN or GaP.