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:
Jul. 08, 1980
Filed:
May. 22, 1979
Applicant:
Inventors:
Yuichi Ono, Tokyo, JP;
Mitsuhiro Mori, Kokubunji, JP;
Makoto Morioka, Tokyo, JP;
Kazuhiro Ito, Tokyo, JP;
Masahiko Kawata, Yokohama, JP;
Kazuhiro Kurata, Hachioji, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 17 ; 357 18 ; 357 55 ;
Abstract
In a prior-art injection type light emitting device which is constructed so that a predetermined range of a p-n junction formed by a semiconductor substrate and an epitaxial layer provided thereon may radiate, a radiation region in the p-n junction becomes larger in area than the region into which current is introduced, on account of the current spreading phenomenon. The construction of a light emitting device free from the phenomenon and a method for manufacturing the light emitting device are disclosed.