Patent ID: 9577000
Date: 2017-02-21
CPC Classifications: H01L

Claim:
1. An image sensor, comprising: a semiconductor substrate; a device isolation layer on the semiconductor substrate defining an active region of the semiconductor substrate, the active region comprising first and second regions spaced apart from each other and a third region between the first and second regions; a trench in the semiconductor substrate extending from the first region to the third region; a photoelectric conversion part provided in the first region and overlapped with the trench, in a plan view of the image sensor; a gate electrode provided in a portion of the trench on the third region, the gate electrode exposing a portion of the first region in the trench a floating diffusion region provided in the second region; and at least one additional trench in the first region, wherein the at least one additional trench is overlapped with the photoelectric conversion part in the plan view, and wherein the trench extends in a first direction and the at least one additional trench extends in a second direction not parallel to the trench.