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:
Jan. 08, 1980
Filed:
Jun. 06, 1978
Applicant:
Inventors:
Masaaki Aoki, Kokubunji, JP;
Yuichi Ono, Tokyo, JP;
Makoto Morioka, Tokyo, JP;
Kazuhiro Ito, Tokyo, JP;
Mitshiuro Mori, Kokubunji, 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
A light emitting semiconductor device wherein a p-n junction is defined by a ditch and wherein the ditch either extends to a low resistance layer or is away from the low resistance layer at most 1/2 of the width of the ditch is disclosed. It has the merit that the near field pattern is much more uniform than in a prior-art device.