Patent ID: 8885080

Claim:
A solid state imaging device comprising: a first chip in which pixels are arranged in a form of a matrix; and a second chip including a data processing circuit processing at least a pixel signal from the pixels, wherein, the relation between the first chip and the second chip is stack configuration, wherein the solid state imaging device further comprises: an XY address controller disposed in the first chip to address the pixels by selectively turning on a transistor provided in each pixel; an analog-to-digital conversion circuit provided for each pixel in the first chip, the analog-to-digital conversion circuit provided on an opposite side from said light receiving surface side in the first chip; and a buffer unit disposed on the opposite side of the first chip, and outside of the analog-to-digital conversion circuit, the buffer unit being connected, at one end, to an output of the analog-to-digital conversion circuit for each pixel in the first chip, and being connected, at another end, to one of a first plurality of output terminals provided on the opposite side of the first chip, the first plurality of outer terminals of the first chip connecting to a second plurality of output terminals provided on the second chip.