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:
Sep. 13, 2011
Filed:
Nov. 16, 2007
Applicants:
Toshiaki Tanaka, Kodaira, JP;
Hiroki Kaneko, Hitachinaka, JP;
Inventors:
Toshiaki Tanaka, Kodaira, JP;
Hiroki Kaneko, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
An illumination apparatus includes a plurality of light emitting diode devices mounted therein and the light emitting diode device includes a substrate, a light emission area having a light emitting layer and a clad layer formed by growing crystal on the substrate, a negative polarity and a positive polarity. The light emission area has 6 or more opposite corners, which are disposed symmetrically to the middle of the light emitting diode device.