Vertically integrated sensors for advanced imaging applications

A TFA (Thin Film on ASIC) image sensor is fabricated depositing an amorphous silicon thin film detector upon a CMOS ASIC. Two new TFA imager prototypes have recently been fabricated. HIRISE II (High Resolution Image Sensor) with 1024 × 128 pixels is an active pixel sensor suited for digital photography. LARS II (Lokalautoadaptiver Sensor) with 368 × 256 Pixels splits the illumination information into two signals, thereby providing a dynamic range of more than 120 dB, as required by automotive applications. Both prototypes include Correlated Double Sampling (CDS) and Double Delta Sampling (DDS) for efficient suppression of fixed pattern noise.