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. 20, 1999
Filed:
Jul. 24, 1997
Applicant:
Inventors:
Armin Hanneberg, Haar, DE;
Georg Tempel, Munchen, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257299 ; 257314 ;
Abstract
The MOS circuit configuration allows switching high voltages on a semiconductor chip. In order to switch a high negative voltage, for example as a programming voltage on the word line of a flash-memory, two circuit variants are given which are formed only with transistors of the same conductivity type as the substrate. The substrate and the transistors formed in the well are p-conductive. In this way it is possible to dispense with deep insulating wells which require special technology.