UNIT PIXEL AND THREE-DIMENSIONAL IMAGE SENSOR INCLUDING THE SAME

摘要

A unit pixel of a three-dimensional image sensor includes a non-silicon photodetector and at least one readout circuit. The non-silicon photodetector is formed at a silicon substrate, and the non-silicon photodetector comprising at least one of non-silicon materials to generate a photocharge in response to incident light. The at least one readout circuit is formed at the silicon substrate, the at least one readout circuit outputs a sensing signal based on the photocharge, and the sensing signal generates depth information on a distance to an object.