Patent ID: 7642613
Filing Date: 2010-01-05
Classification: H01L

Abstract:
1. A CMOS image sensor comprising: a semiconductor substrate including a transistor region and a photodiode region; a gate electrode formed on the semiconductor substrate corresponding to the transistor region; an interlayer dielectric layer formed on an entire surface of the semiconductor substrate including the gate electrode; a microlens formed over the interlayer dielectric layer to condense light; a metal barrier formed in the interlayer dielectric layer to surround a portion of the interlayer dielectric layer corresponding to the photodiode region and to reflect light in the photodiode region that transmits through the microlens but goes beyond the photodiode region; a metal line formed between the interlayer dielectric layer and the microlens; and a contact formed in the interlayer dielectric layer to electrically and directly connect the gate electrode with the metal line.