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:
Feb. 26, 2002
Filed:
Apr. 17, 1996
Eric G. Stevens, Rochester, NY (US);
James P. Lavine, Rochester, NY (US);
Charles V. Stancampiano, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A charge-coupled device (CCD) image sensor that preserves defect gettering characteristics having a vertical overflow drain (VOD) for blooming protection is provided in a structure that provides low voltage electronic shuttering. This structure reduces the electronic shutter voltage to ease the demands on off-chip support circuitry required to operate the CCD image sensor. The invention provides an improved pixel structure to reduce this voltage. Prior art difficulties are avoided by providing uniform, n-type layers of varying doping levels underneath the entire area of the CCD device. Combined with a lightly doped n-type substrate these layers provide low voltage electronic shutter operation.