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.

Date of Patent:
Dec. 25, 2018

Filed:

Nov. 16, 2015
Applicant:

Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;

Inventor:

Chih-Min Liu, Hsinchu County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/3745 (2011.01); H01L 27/146 (2006.01); H04N 5/378 (2011.01);
U.S. Cl.
CPC ...
H04N 5/3745 (2013.01); H01L 27/14609 (2013.01); H01L 27/14649 (2013.01); H04N 5/378 (2013.01);
Abstract

A circuit includes a sensing unit, a first group of switching units, and a second group of switching units. The sensing unit is configured to receive light and generate a sensing voltage at a sensing node in response to the light. The first group of switching units is coupled to the sensing node, and configured to generate a first transfer voltage to a first node and generate a first auxiliary voltage to a second node. At least one of the first transfer voltage and the first auxiliary voltage is read by a readout circuit. The second group of switching units is coupled to the sensing node, and configured to generate a second transfer voltage to a third node and generate a second auxiliary voltage to a fourth node. At least one of the second transfer voltage and the second auxiliary voltage is read by the readout circuit.


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