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:
Aug. 30, 2022
Filed:
Dec. 07, 2020
Applicant:
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Inventor:
Shankar Ramakrishnan, Bangalore, IN;
Assignee:
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01); H04N 5/378 (2011.01); H04N 5/365 (2011.01);
U.S. Cl.
CPC ...
H01L 27/14612 (2013.01); H01L 27/14643 (2013.01); H04N 5/3658 (2013.01); H04N 5/378 (2013.01);
Abstract
An image sensor may include an array of image pixels arranged in rows and columns. Each column of pixels may be coupled to current source transistors and active clamping circuitry. The active clamping circuitry may be configured to sample a reset voltage and to selectively pull down the column line after a charge transfer operation if the column line exceeds the previously sampled reset voltage. The active clamping circuitry can reduce settling time during low light conditions while eliminate column fixed pattern noise.