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. 06, 1979
Filed:
Apr. 04, 1978
Applicant:
Inventor:
Baudouin de Cremoux, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 22 ; 357 16 ; 357 15 ; 357 61 ;
Abstract
A field effect transistor deposited upon a substrate having a wide forbidden band comprises an active layer of n-type conductivity which forms a heterojunction with the substrate. Since the subjacent material has a forbidden band higher than the forbidden band of the active layer, the formation of electronic currents between the source and the drain and in the substrate is avoided.