Photoelectric conversion apparatus and image pickup system having photoelectric conversion apparatus

Abstract

A photoelectric conversion apparatus according to one aspect of the present invention includes a first substrate including a photoelectric conversion region and a surrounding region, and a second substrate including a circuit for processing a signal from the photoelectric conversion region, and overlapping the first substrate. In this case, the circuit for processing a signal from the photoelectric conversion region includes a first circuit and a second circuit with a higher drive frequency than that of the first circuit. In an orthogonal projection, the second circuit is only provided in the photoelectric conversion region.

What is claimed is: 
     
         1 . A photoelectric conversion apparatus, comprising:
 a first substrate that includes a photoelectric conversion region on which a plurality of pixels is provided in a two-dimensional array, each of the plurality of pixels including a photoelectric conversion element;   a second substrate that includes a vertical scanning circuit; and   a third substrate that includes an image signal processing unit,   wherein the first substrate, the second substrate, and the third substrate are stacked.