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. 20, 2002
Filed:
Jun. 26, 2000
Applicant:
Inventors:
Hironori Nishino, Kawasaki, JP;
Yusuke Matsukura, Kawasaki, JP;
Hitoshi Tanaka, Kawasaki, JP;
Mitsunori Yokoyama, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/100 ;
U.S. Cl.
CPC ...
H01L 3/100 ;
Abstract
The optical semiconductor device comprises a first contact layer formed on a substrate ; a first quantum well layer formed on the first contact layer; a second contact layer formed on the first quantum well layer; an optical coupling layer formed on the second contact layer; and a first conductor plug extended from an upper surface of the optical coupling layer and arriving at the first contact layer.