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. 04, 1989
Filed:
Mar. 21, 1988
Applicant:
Inventor:
Jun-ichi Nishizawa, Sendai-shi, Miygai-ken, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 17 ; 357 61 ;
Abstract
A method of manufacturing a semiconductor device by the use of a Group II-VI compound semiconductor crystal prepared by liquid growth method using a temperature difference technique under controlled vapor pressure of the crystal-constituting Group VI element. Thus, the concentration of vacancies and other defects acting as donor is reduced as compared with the concentration of the p type impurity to be introduced. This invention is suitable for producing light-emitting diodes emitting a light of short-wave lengths.