Patent ID: 11092677

Abstract:
An object of the present invention is to provide a time measurement device that facilitates a circuit layout.A time measurement device (20) of the present invention includes: a plurality of pixels (30) provided side by side in a first direction, and each including a single-photon avalanche diode (SPAD) disposed on a first semiconductor substrate, and each generating a first logic signal (S35) depending on detection timing in the single-photon avalanche diode (SPAD); and a time measurement section (24) that is disposed on a second semiconductor substrate attached to the first semiconductor substrate and measures the detection timing in each of the plurality of pixels (30). Pixels, other than a first pixel disposed on an end in the first direction and out of the plurality of pixels (30), each generate output signals on a basis of an output signal of a pixel other than relevant one of the pixels and on a basis of the first logic signals (S35) generated in the relevant one of the pixels, and the time measurement section (24) measures the detection timing in each of the plurality of pixels (30) on a basis of an output signal of a second pixel disposed on another end in the first direction out of the plurality of pixels (30).The time measurement device (20) of the present invention is applicable to a distance measurement device.