Patent ID: 6600172
Filing Date: 2003-07-29
Classification: H01L

Abstract:
An image sensor comprising:(a) a transparent substrate; (b) a first dielectric layer formed over the substrate; (c) lower electrodes arranged at intervals on the first dielectric layer; (d) a patterned semiconductor layer formed on the first dielectric layer to overlap with respective lower electrodes; (e) transparent upper electrodes formed on the semiconductor layer to overlap with the respective lower electrodes, the upper electrodes always being spaced apart from the first dielectric layer by the semiconductor layer; (f) a second dielectric layer formed to cover the upper electrodes, the semiconductor layer, and the lower electrodes; and (g) a patterned signal line layer formed on the second dielectric layer, the signal line layer being electrically connected in common to the respective upper electrodes at the overlap parts of the semiconductor layer by way of contact holed of the second dielectric layer; the patterned semiconductor layer having island-shaped pixel parts defining pixel areas of the sensor for receiving incident light through the upper electrodes, overlap parts overlapping with the signal line layer, and interconnection parts interconnecting each of the pixel parts with a corresponding one of the overlap parts; wherein each of the upper electrodes, a corresponding one of the pixel parts of the semiconductor layer, and a corresponding one of the lower electrodes constitute a photodiode.