Patent ID: 7943976
Filing Date: 2011-05-17
Classification: H01L

Abstract:
1. A CMOS image sensor comprising: isolation regions formed in a substrate; a photo diode region formed in the substrate; an intermediate insulating layer as a silicon oxide layer formed on the isolation regions and the photo diode region; gate electrodes formed on the intermediate insulating layer; impurity injection regions formed in the substrate respectively positioned between the gate electrodes and the isolation regions; silicide regions formed on upper surfaces of the gate electrodes and the impurity injection regions; a first insulating layer formed on a surface of the photodiode region and sides of the gate electrodes; a second insulating layer formed on the first insulating layer, a third insulating layer formed on the second insulating layer; an interlayer insulating layer formed to cover the third insulating layer; and via plugs vertically passing through the interlayer insulating layer and connected to the silicide regions.