Patent ID: 6060714
Filing Date: 2000-05-09
Classification: H01L

Abstract:
An X-ray imager comprising:a substrate;an array of thin film transistors (TFTs) provided on said substrate, each of said TFTs including a gate electrode in electrical communication with a gate address line, a source electrode, and a drain electrode, and each of the TFTs further including a semiconductor layer;an insulating layer provided on the substrate over the array of TFTs;an array of collector electrodes provided on said substrate and positioned such that said insulating layer is located between said array of collector electrodes and said substrate, each of said collector electrodes being in electrical communication with a corresponding one of said TFTs through a via or aperture defined in said insulating layer, and wherein each of said collector electrodes forms part of a storage capacitor so that an array of storage capacitors are provided;a photoconductor layer positioned on said substrate so that said insulating layer is located between said photoconductor layer and said substrate, photoconductor layer functioning so that said storage capacitors store charge in amounts that are functions of incident X-ray radiation received by the X-ray imager; anda photo-imageable interface barrier layer for simplifying the manufacturing process required to make the X-ray imager, said interface barrier layer having a thickness in many areas of from about 200 to 1000 .ANG. and being located so that said interface barrier layer blocks charge carriers in said photoconductor from reaching said collector electrodes.