Abstract
We have developed organic photoconductive film (OPF) CMOS image sensors with pixel structures different from those of a conventional silicon image sensors, in which, the organic thin film for photoelectric conversion and the charge storage part for signal charge accumulation are completely independent. In this paper, we focus on two unique features of the OPF image sensor: (1) technology that realizes over 120 dB simultaneous-capture wide dynamic range, (2) global shutter technology achieving high saturation signals per unit square that is 10 dB higher than that of silicon image sensors with the global shutter function, without sacrificing pixel area. In addition, we have developed a test chip that realizes a high resolution of 8K4K, a high frame rate of 60 fps, a high saturation signals of 450 ke−, and the global shutter function simultaneously. These features of the OPF image sensor will contribute to significant progress in imaging and sensing fields.
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