Patent ID: 8106429
Filing Date: 2012-01-31
Classification: H01L

Abstract:
1. An image sensor comprising: a semiconductor substrate including a lower dielectric layer and a lower interconnection in the lower dielectric layer; a plurality of upper interconnection sections on or above the semiconductor substrate, wherein each upper interconnection section comprises a dielectric pattern, an upper interconnection therein and a metal pad in direct contact with an uppermost surface of the upper interconnection and an uppermost surface of the dielectric pattern; a first trench between adjacent upper interconnection sections; a bottom electrode on an entire exposed outer peripheral surface of each upper interconnection section and in direct contact with the lower dielectric layer; a first conductive layer on an uppermost surface and sidewalls of the bottom electrode; an intrinsic layer over an entire surface of the semiconductor substrate and the first conductive layer, and in the first trench, forming a second trench in the first trench; a second conductive layer on the intrinsic layer and forming a third trench in the second trench; a light blocking part in the third trench; and a top electrode on the light blocking part and the second conductive layer.