IMAGING DEVICE AND ELECTRONIC DEVICE

摘要

An imaging device with low power consumption is provided. The imaging device includes pixels and an A/D converter circuit. The pixels have a function of holding first imaging data and a function of obtaining differential data between the first imaging data and second imaging data. The A/D converter circuit includes a comparator circuit and a counter circuit. When the output of the pixels corresponds to the differential data, the supply of a clock signal to the counter circuit is stopped.

主权项

1. An imaging device comprising:
pixels arranged in a matrix; and an A/D converter circuit, wherein the A/D converter circuit comprises:
a first circuit;a second circuit;a third circuit; anda fourth circuit, wherein the pixels are electrically connected to the first circuit, wherein the first circuit, the second circuit, the third circuit, and the fourth circuit are each configured to receive and send a high-level potential signal or a low-level potential signal, wherein the first circuit is configured to stop operating in response to a first signal, wherein the first circuit is configured to make a comparison between a second signal output from one of the pixels and a third signal serving as a reference potential signal and then output a fourth signal, wherein the second circuit is configured to output a seventh signal determined by a combination of the fourth signal, a fifth signal for controlling the fourth circuit, and a sixth signal for controlling the second circuit, wherein the third circuit is configured to stop outputting a clock signal in response to the seventh signal, and wherein the fourth circuit is configured to perform counting in response to the clock signal and output data of the counting.