Image sensor array for the back side illumination with junction gate photodiode pixels

A method for controlling a junction gate photo-diode (JGP) pixel, the pixel comprising a JGP, the JGP positioned on a substrate including a top n layer, a middle p layer and a bottom n layer forming a n-p-n junction, and a control terminal coupled to the top n layer, a floating diffusion (FD) positioned on the substrate and coupled to a pixel output line through an amplifier, a pinned barrier (PB) positioned on the substrate between the JGP and the FD, a reset gate positioned on the substrate and coupled to the FD, and a controller, the method comprising:

• applying, by the controller, during a reset period, a reset control voltage to the reset gate to clear charge accumulated in the JGP and FD, and
• applying, by the controller, during an integration period, an integration control voltage to the JGP to accumulate charge in the JGP, and
• applying, by the controller, during a readout period, a readout control voltage to the JGP to transfer the accumulated charge from the JGP over the PB and into the FD for pixel readout.