Patent ID: 9609257
Date: 2017-03-28
CPC Classifications: H01L,H04N

Claim:
1. A solid-state imaging device comprising: a first substrate; a second substrate; a pixel unit disposed in the first substrate and in which a plurality of pixels, each of which has a photoelectric conversion element and generates a pixel signal, are disposed in a matrix; and an analog-to-digital (A/D) conversion unit disposed for every one or more columns of the pixels and configured to count a count clock for only a period according to a magnitude of the pixel signal, wherein the A/D conversion unit includes: a plurality of counter units provided in one of the first substrate and the second substrate and configured to generate n-bit count signals (n is a natural number greater than or equal to 2) by counting the count clock; a plurality of memory units provided in the other of the first substrate and the second substrate and configured to hold the count signals and output the held count signals to a plurality of horizontal signal transfer lines; and a connection unit configured to connect each of the plurality of counter units to a corresponding one of the plurality of memory units and simultaneously transfer the count signals from at least two counter units to at least two memory units.