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, 2021
Filed:
Jan. 18, 2019
Himax Imaging Limited, Tainan, TW;
Hack soo Oh, Tainan, TW;
Himax Imaging Limited, Tainan, TW;
Abstract
A pixel circuit is provided. The pixel circuit may comprise a photodiode, a comparator circuit, a capacitor, a first switch circuit, a second switch circuit and a third switch circuit. The photodiode is arranged to accumulate charges in response to incident radiation, to generate a photodiode signal. The comparator circuit is arranged to generate an output signal according to a voltage level of a specific node within the pixel circuit during a read-out phase of the pixel circuit. The capacitor is coupled between a control voltage terminal of the pixel circuit and the specific node, the first switch circuit is coupled between the photodiode and the specific node, the second switch circuit is coupled between the specific node and an output terminal of the pixel circuit, and the third switch circuit is coupled between the output terminal and the comparator circuit.