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:
May. 23, 2023
Filed:
Aug. 25, 2021
Silead Inc., Shanghai, CN;
SILEAD INC., Shanghai, CN;
Abstract
An image sensor includes an image sensor pixel array having pixels. Each pixel includes a continuous active region having a first portion and a second portion extending from the first portion. A photodiode, a reset transistor, a drive transistor, and a select transistor are formed in and over the first portion. The photodiode and the reset transistor define a floating diffusion region therebetween. A switch transistor is formed in and over the second portion and includes a first source/drain region and a second source/drain region. The first source/drain region is included in the floating diffusion region. The second source/drain region interfaces a doped region formed in the second region. The pixel also includes a gate structure disposed directly over the doped region. By controlling the switch transistor, the pixel may operate in a high conversion gain mode or a low conversion gain mode to accommodate different illumination or exposure conditions.