High dynamic range image sensor read out architect

专利名称：High dynamic range image sensor read out

architecture using in-frame multi-bitexposure control

发明人：Tiejun Dai,Rui Wang申请号：US15384859申请日：20161220公开号：US09955091B1公开日：20180424

专利附图：

摘要：A pixel circuit includes a photodiode to accumulate image charge in response toincident light. A transfer transistor is disposed between the photodiode and a floating

diffusion disposed in the first semiconductor layer to selectively transfer the imagecharge accumulated in the photodiode to the floating diffusion. A select circuit isdisposed in second semiconductor layer coupled to a control terminal of the transfertransistor through a hybrid bond between the first and second semiconductor layers toselect between first and second transfer control signals to control the transfertransistor. The select circuit is coupled to output the first transfer control signal inresponse to a precharge enable signal during a read out operation of a different row, andoutput the second transfer control signal in response to a sample enable signal during aread out operation of the row.

申请人：OMNIVISION TECHNOLOGIES, INC.

地址：Santa Clara CA US

国籍：US

代理机构：Christensen O'Connor Johnson Kindness PLLC

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