Invention Grant
- Patent Title: Tunnel contact for a pixel cell in an imaging system
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Application No.: US16723922Application Date: 2019-12-20
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Publication No.: US11152404B2Publication Date: 2021-10-19
- Inventor: Qin Wang , Woon il Choi
- Applicant: OmniVision Technologies, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: H01L27/146
- IPC: H01L27/146

Abstract:
A pixel cell includes an electrically conductive tunnel contact formed across a surface of a source follower gate, the tunnel contact having a first end, a second end, and an intermediate portion between the first and second ends. The first end is coupled to a floating diffusion FD, the second end is coupled to the first doped region of a reset transistor RST. The tunnel contact is formed in physical and in electrical contact with the surface of the source follower gate for a length of the intermediate portion substantially equal to a width of the source follower gate. Methods of forming the pixel cell are also described.
Public/Granted literature
- US20210193723A1 TUNNEL CONTACT FOR A PIXEL CELL IN AN IMAGING SYSTEM Public/Granted day:2021-06-24
Information query
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