Patent ID: 9679929
Date: 2017-06-13
CPC Classifications: B82Y,H01L

Claim:
1. A unit pixel of a binary image sensor, comprising: a substrate having a surface on which light is incident; at least one quantum dot on the surface of the substrate; source and drain areas in the substrate; a channel area between the source and drain areas; a gate electrode on the channel area; and a charge storage area between the channel area and the at least one quantum dot and configured to store carriers transferred from the at least one quantum dot, wherein the at least one quantum dot and the gate electrode are on opposite sides of the channel area, wherein a conductivity type of the charge storage area is different from a conductivity type of the source and drain areas, wherein the substrate comprises a first area having a different conductivity type than the conductivity type of the source and drain areas, and wherein the charge storage area comprises an implanted region in the first area.