IMAGE SENSOR AND METHOD FOR FABRICATING THE SAME

摘要

The present invention relates to an image sensor preventing degradation of properties caused by increase in ratio between signal and noise, and to a fabricating method thereof. The image sensor comprises a transfer gate formed on a front surface of a substrate; a photoelectric conversion area formed on the substrate on one side of the transfer gate; and a floating diffusion area including a trench formed on the other side substrate of the transfer gate, a barrier film covering the bottom of at least the trench, and a conductive film gap-filled on the trench.