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:
Aug. 08, 1989
Filed:
Jul. 06, 1987
Applicant:
Inventors:
Erhard Kohn, Titusville, NJ (US);
Karl R Hofmann, Kingston, NJ (US);
Assignee:
Siemens Corporate Research and Support, Inc., Iselin, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 22 ; 357 58 ; 357 16 ; 357-4 ;
Abstract
A modulation-doped field effect transistor includes an undoped semiconductor layer and an arrangement for supplying charge carriers into a region of the semiconductor layer adjacent one side. An arrangement is provided for locally modulating hole and electron density in another region adjacent the other side of the semiconductor layer in a repeating pattern of alternations so as to inhibit current flow in the direction of the alternations.