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:
Apr. 06, 2010
Filed:
Oct. 19, 2007
Applicants:
Taichiroo Konno, Hitachi, JP;
Kazuyuki Iizuka, Hitachi, JP;
Masahiro Arai, Hitachi, JP;
Inventors:
Assignee:
Hitachi Cable, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
Abstract
A plurality of semiconductor layers including an active layerand a light extract layer, and a reflective metal filmare formed in a semiconductor light emitting device. The light extract layeris formed of a plurality of layershaving different composition ratios. An irregularityis formed on the layersincluding an outermost layer to provide a main surface S as a rough-surface.