WORKSHOP PAPER
A 1280x 960 2.8µm HDR CIS with DCG and Split-Pixel Combined
Abstract
A triple capture high dynamic range (HDR) CMOS image sensor with an active array size of 1280x960, and 0.8e- rms noise floor is presented. This is the first sensor that combines split-diode pixel technology with dual conversion gain (DCG) readout to achieve HDR with LED flicker mitigation (LFM). The pixel size is 2.8um, the smallest split-diode pixel reported to date, implemented in OmniVision’s 2nd generation BSI process (BSI2) with buried deep trench isolation (BDTI) for low crosstalk. The sensor delivers three capture values from two types of exposures, enabling HDR processed images output at 30fps with minimized artefacts and power dissipation.Keywords
HDR CMOS image sensor, Split-diode pixel technology, LED flicker mitigation,References
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