发明名称 |
Compact In-Pixel High Dynamic Range Imaging |
摘要 |
Embodiments of the invention describe providing a compact solution to provide high dynamic range imaging (HDRI or simply HDR) for an imaging pixel by utilizing a control node for resetting a floating diffusion node to a reference voltage value and for selectively transferring an image charge from a photosensitive element to a readout node. Embodiments of the invention further describe control node to have to a plurality of different capacitance regions to selectively increase the overall capacitance of the floating diffusion node. This variable capacitance of the floating diffusion node increases the dynamic range of the imaging pixel, thereby providing HDR for the host imaging system, as well as increasing the signal-to-noise ratio (SNR) of the imaging system. |
申请公布号 |
US2014103189(A1) |
申请公布日期 |
2014.04.17 |
申请号 |
US201213651092 |
申请日期 |
2012.10.12 |
申请人 |
OMNIVISION TECHNOLOGIES, INC. |
发明人 |
CHEN GANG;MAO DULI;TAI HSIN-CHIH;RHODES HOWARD E. |
分类号 |
H01L27/148;H01L31/00 |
主分类号 |
H01L27/148 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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