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:
Sep. 02, 2025
Filed:
Mar. 08, 2023
Omnivision Technologies, Inc., Santa Clara, CA (US);
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A pixel array includes 2×2 groupings of photodiodes to generate image charge in response to incident light directed through a back side of the semiconductor layer. A Quad Bayer filter is disposed over the back side of the semiconductor layer over the 2×2 groupings of photodiodes. Each color filter of the Quad Bayer CFA is disposed over a respective one of the plurality of 2×2 groupings of photodiodes. Trench balance structures are disposed in the semiconductor layer. Each of the trench balance structures is disposed in the semiconductor layer between one of the photodiodes and a respective one of the red color filters of the Quad Bayer filter. None of the trench balance structures are disposed between any of the photodiodes and respective green color filters or blue color filters of the Quad Bayer filter.