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:
Nov. 08, 1983
Filed:
Feb. 09, 1981
Applicant:
Inventors:
Jun-ichi Nishizawa, Sendai, JP;
Toru Teshima, Yokohama, JP;
Assignees:
Zaidan Hojin Handotai Kenkyu Shinkokai, Sendai, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01S / ;
U.S. Cl.
CPC ...
357 17 ; 357 16 ; 372 50 ;
Abstract
The emission efficiency of a hetero-junction light-emitting diode is improved by raising the carrier concentration in the radiative region, and by increasing the thickness of the radiative region. On p.sup.+ type GaAs substrate, a p type Ga.sub.1-x Al.sub.x As (0.30<.times.<0.37) layer and an n type Ga.sub.1-y Al.sub.y As (0.40<y<0.70) layer are grown. The emission efficiency are optimized when