- 专利标题: C-MOS photoelectric charge transfer cell, and matrix sensor comprising a set of such cells
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申请号: US15318240申请日: 2015-06-12
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公开(公告)号: US10298870B2公开(公告)日: 2019-05-21
- 发明人: Yang Ni
- 申请人: NEW IMAGING TECHNOLOGIES
- 申请人地址: FR Verrieres le Buisson
- 专利权人: NEW IMAGING TECHNOLOGIES
- 当前专利权人: NEW IMAGING TECHNOLOGIES
- 当前专利权人地址: FR Verrieres le Buisson
- 代理机构: Womble Bond Dickinson (US) LLP
- 优先权: FR1455397 20140613
- 国际申请: PCT/EP2015/063122 WO 20150612
- 国际公布: WO2015/189363 WO 20151217
- 主分类号: H04N5/378
- IPC分类号: H04N5/378 ; H04N5/225 ; H01L27/146 ; H04N5/355 ; H04N5/235
摘要:
The invention concerns a C-MOS photoelectric cell with charge transfer, comprising an embedded photodiode (PPD) likely to be exposed to photons, formed by a doped area of a first type in a substrate of an opposite type, and means for transferring the charges generated by exposing the photodiode to photons to a floating diffusion (FD), and means for reading, on the floating diffusion, a voltage representative of the quantity of charges transferred. This cell is remarkable in that the depletion area of the photodiode junction under zero bias voltage extends essentially through the entire thickness of the doped area of a first type, such that the junction capacitance of said photodiode and the capacitive noise are minimized, and in that, during exposure to photons, the reading is carried out under a condition of equilibrium between the charges generated by photo-conversion and the charges lost by evaporation. The invention also proposes a matrix sensor formed from such cells with means forming a barrier to the diffusion of the charges evaporated from one cell to a neighboring cell.
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