Patent ID: 9324758
Filing Date: 2016-04-26
CPC Classification: H01L

Claim Text:
1. A depth pixel included in a three-dimensional (3D) image sensor, comprising: a photo detection region configured to collect photo charges based on light reflected by an object, and configured to direct the collected photo charges in a first direction and a second direction different from the first direction based on an internal electric field in the photo detection region; a first photo gate over the photo detection region, the first photo gate configured to be activated in response to a first photo control signal; a first floating diffusion region configured to accumulate first photo charges of the collected photo charges if the first photo gate is activated where the first photo charges are drifted in the first direction; a second photo gate over the photo detection region and spaced apart from the first photo gate, the second photo gate configured to be activated in response to the first photo control signal; and a second floating diffusion region configured to accumulate second photo charges of the collected photo charges if the second photo gate is activated where the second photo charges are drifted in the second direction.