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:
Aug. 17, 2004
Filed:
Jan. 18, 2002
Applicant:
Inventors:
Takafumi Yao, Sendai City, Miyagi Prefecture, JP;
Hiromitsu Uchiyama, Nagoya, JP;
Takaharu Iwadachi, Nagoya, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/918 ;
U.S. Cl.
CPC ...
H01L 2/918 ;
Abstract
A first epitaxial layer group to emit a yellow color light is provided on a substrate via a first buffer layer. Then, a second epitaxial layer group to emit a blue color light is provided on the first epitaxial layer group via a second buffer layer. The first and the second epitaxial layer group are made of II-VI semiconductor compounds, respectively.