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. 27, 1993
Filed:
Nov. 15, 1991
Applicant:
Inventor:
Misao Hironaka, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257624 ; 257627 ; 257739 ; 257745 ; 257773 ; 257776 ;
Abstract
A semiconductor device is made by etching a III-V compound semiconductor layer having a (100) surface using a mask having an opening defined by edges including at least one edge along an [011] direction of the layer so that the surface revealed by etching has a (111) orientation. An electrode is formed on the (111) surface by vacuum vapor deposition.