- 专利标题: PIXEL DESIGNS WITH REDUCED LOFIC RESET AND SETTLING TIMES
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申请号: US17849403申请日: 2022-06-24
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公开(公告)号: US20230421922A1公开(公告)日: 2023-12-28
- 发明人: Zhe Gao , Chengcheng Xu , Dennis Tunglin Lee , Tiejun Dai
- 申请人: OMNIVISION TECHNOLOGIES, INC.
- 申请人地址: US CA Santa Clara
- 专利权人: OMNIVISION TECHNOLOGIES, INC.
- 当前专利权人: OMNIVISION TECHNOLOGIES, INC.
- 当前专利权人地址: US CA Santa Clara
- 主分类号: H04N5/378
- IPC分类号: H04N5/378 ; H04N5/355 ; H01L27/146
摘要:
Pixel designs with reduced LOFIC reset and settling times are disclosed herein. In one embodiment, a pixel cell includes a photosensor configured to photogenerate image charge in response to incident light, a floating diffusion to receive the image charge from the photosensor, a transfer transistor coupled between the floating diffusion and the photosensor to transfer the image charge to the floating diffusion, and a first reset transistor coupled between the floating diffusion and the voltage supply. The pixel cell further includes a capacitor having two ends, and a second reset transistor. A first end of the capacitor is coupled to the floating diffusion. The second reset transistor is coupled between a second end of the capacitor and the voltage supply.
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