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. 01, 2003
Filed:
Dec. 06, 2000
Applicant:
Inventors:
Masayoshi Koike, Nishikasugai-gun, JP;
Shiro Yamasaki, Nishikasugai-gun, JP;
Assignee:
Toyoda Gosei Co., Ltd., Nishikasugai-gun, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/300 ; H01L 2/100 ;
U.S. Cl.
CPC ...
H01L 3/300 ; H01L 2/100 ;
Abstract
A clad layer is provided as a multilayer structure made of an alternate laminate of 20 layers of Al Ga N 50 nm thick and 20 layers of Ga In N 20 nm thick. The clad layer about 1.4 &mgr;m thick has a low elastic constant because the clad layer is provided as a multilayer structure. In a laser diode, it is useful that another layer such as a guide layer requiring a band gap of aluminum gallium nitride (Al Ga N 0<x<1) is provided as a multilayer structure made of aluminum gallium nitride (Al Ga N 0<x<1) and gallium indium nitride (Ga Ga N 0<y<1).