(In Japanese) 4.0µm Voltage Mode Global Shutter Pixels with Single Exposure High Dynamic Range and Phase Detection Auto Focus Capability

2021 November

Authors Ken Miyauchi, Kazuya Mori, Toshiyuki Isozaki, Yusuke Sawai, Ho-Ching Chien and Junichi Nakamura

映像情報メディア学会 情報センシング研究会

In this paper, two types of 4.0µm backside illuminated stacked voltage mode global shutter pixels implemented in a prototype CMOS image sensor are reported. One is a pixel with a lateral overflow integration capacitor (LOFIC) to expand the sensor dynamic range and the other is a pixel having dual photodiodes and dual conversion gains which enables the phase detection auto focus capability with single exposure dynamic range (SEHDR). Thanks to the LOFIC and the dual conversion gain technologies, 90dB and 77dB SEHDR has been achieved in the global shutter mode.