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. 16, 1982
Filed:
Aug. 04, 1981
Applicant:
Inventors:
Hubert Patalong, Munich, DE;
Eberhard F Krimmel, Pullach, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
427 531 ; 2191 / ; 2191 / ; 357 15 ; 357 65 ; 427 88 ; 427 91 ;
Abstract
A region of a semiconductor surface intended for a metal contact is scanned with a closely packed sequence of intense laser light pulses so as to generate a disturbed surface layer and a metal layer is then applied and alloyed into the semiconductor surface. The invention is particularly useful with silicon crystal surfaces orientated in the <100> direction, which for the manufacture of semiconductor components, such as thyristors having controllable short-circuits generated by integrated field effect transistors, are provided on their back side with an aluminum contact or a metal silicide contact.