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. 02, 1991
Filed:
Apr. 02, 1990
Applicant:
Inventors:
Assignee:
Sony Corporaiton, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; H01L / ; H03F / ; H03F / ;
U.S. Cl.
CPC ...
377 60 ; 357 24 ; 330277 ; 330292 ;
Abstract
An output circuit for CCD imager devices or CCD delay devices is disclosed in which a depletion type second MIS transistor is connected to the drain side of a first MIS transistor constituting a source follower adapted for converting transferred signal signals into an electrical voltage, and an output voltage is supplied to the gate of the second MIS transistor. This depletion type second MIS transistor causes the drain potential of the first MIS transistor to be changed in phase with the input electrical charges to reduce the gate-to-drain capacitance of the first MIS transistor to improve the charge-to-voltage conversion gain.