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:
Jun. 23, 2026
Filed:
Mar. 07, 2023
Omnivision Technologies, Inc., Santa Clara, CA (US);
Hui Zang, San Jose, CA (US);
Vincent Venezia, Los Gatos, CA (US);
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A pixel cell includes a photodiode disposed in a semiconductor material. A floating diffusion is disposed in the semiconductor material. A transfer gate includes a vertical transfer gate structure disposed in the semiconductor material between the photodiode and the floating diffusion. The transfer gate is coupled between the photodiode and the floating diffusion. A passivation layer is disposed in the semiconductor material and proximate to the vertical transfer gate. The passivation layer has a region with a non-uniformly distributed doping profile proximate to the vertical gate structure such that a first doping concentration of the region in the passivation layer proximate to the vertical gate structure along a first direction is less than a second doping concentration of the region in the passivation layer proximate to the vertical gate structure along a second direction.