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:
Dec. 17, 1991
Filed:
Aug. 10, 1990
Applicant:
Inventor:
Victor M Da Costa, San Carlos, CA (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307298 ; 307448 ; 307450 ; 3073032 ; 307304 ; 357 237 ; 357 238 ;
Abstract
A cascode circuit for switching a high voltage thin film transistor substantially over its entire high voltage range, comprising a leaky low voltage thin film transistor connected in series with the high voltage thin film transistor, the transistors being connected between a source of high potential and a source of reference potential, and the leaky low voltage thin film transistor includes a space charge limited current shunt connected in parallel with the low voltage thin film transistor.