An active pixel sensor cell for reducing the influence of 1 / f noise, increasing the voltage range of the cell, and reducing the size of the cell

摘要

In the present invention, an active pixel sensor cell includes a buffer transistor having a well region of a second conductivity type formed in a substrate of a first conductivity type, and a gate connected to the well region.;According to the present invention, the active pixel sensor cell also includes a reset region of the first conductivity type formed in the well region. By forming the reset region in the well region, a reset diode is formed which changes the voltage on the well region when connected to the reset voltage pulse.