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:
Jan. 12, 1999
Filed:
Apr. 11, 1997
Applicant:
Inventors:
Timothy J Tredwell, Fairport, NY (US);
Teh H Lee, Webster, NY (US);
James P Lavine, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257443 ; 257444 ; 257445 ;
Abstract
An image sensor comprising a semiconductor of a first conductivity type having a plurality of pixels formed thereon; and a region heavily doped with the first conductivity type semiconductor beneath the pixels formed such that there is a gradient formed within the semiconductor below the pixels that is capable of directing photogenerated electrons toward the pixels and away from the heavily doped region. The gradient is formed by having a more lightly doped layer formed upon the heavily doped layer and allowing a gradient to from around the junction of the two layers.