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:
Nov. 05, 2024
Filed:
Apr. 11, 2023
Omnivision Technologies, Inc., Santa Clara, CA (US);
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A pixel circuit includes a photodiode configured to photogenerate image charge in response to incident light. A transfer transistor is coupled between the photodiode and a floating diffusion to transfer the image charge from the photodiode to the floating diffusion. A reset transistor is coupled between a pixel voltage source and the floating diffusion. A lateral overflow integration capacitor (LOFIC) network includes a first LOFIC coupled between the floating diffusion and the first bias voltage source, and a second LOFIC coupled between the floating diffusion and the second bias voltage source. The first LOFIC is configured to be forward biased and the second LOFIC is configured to be reverse biased at an end of an integration period, and image charge discharged from the first LOFIC and image charge discharged from the second LOFIC compensate each other during a readout period.