Patent ID: 8476727

Claim:
A photodetector comprising: a semiconductor substrate; a photosensor array having a plurality of pixel regions, the pixel regions arranged into a plurality of rows and a plurality of columns, each of the plurality of pixel regions comprising at least one optically sensitive material over a portion of the semiconductor substrate; pixel circuitry formed on the semiconductor substrate for each of the plurality of respective pixel regions, the pixel circuitry for each respective pixel region being configured to apply a voltage difference across the optically sensitive material for the respective pixel region and to read out a signal based on a flow of current through the optically sensitive material over a period of time with at least a portion of the pixel circuitry for a first respective pixel region formed under the optically sensitive material being configured for a different respective pixel region that is not read out by the pixel circuitry for the first respective pixel region; first pixel circuitry for the first respective pixel region being formed in a first half of a first region of the semiconductor substrate and a first half of a second region of the semiconductor substrate; and second pixel circuitry for a second respective pixel region being formed in a second half of the first region of the semiconductor substrate and a second half of the second region of the semiconductor substrate.