Patent ID: 6011274
Filing Date: 2000-01-04
Classification: G02F,H01L

Abstract:
An X-ray imager comprising:a substrate;an array of thin film transistors (TFTs) disposed on said substrate, said array of TFTs including a plurality of address lines connected to said TFTs;an array of electrodes disposed on said first substrate, a plurality of said electrodes in said array of electrodes overlapping at least one of said address lines;an organic photo-imageable insulating layer including acrylic, said organic photo-imageable insulating layer having a dielectric constant .epsilon. less than about 4.0 disposed on said substrate between said address lines and said electrodes at least in areas of overlap and areas adjacent source electrodes of the TFTs;an intermediate protective insulating layer disposed between said TFTs and said photo-imageable insulating layer so as to prevent said organic photo-imageable insulating layer from directly contacting semiconductor material in channels of said TFTs thereby reducing potential shifts of threshold voltage and sub-threshold swings in said TFTs; andsaid photo-imageable insulating layer and said intermediate protective layer each having a plurality of contact vias defined therein, wherein said electrodes are in electrical communication with corresponding TFT source electrodes through said contact vias defined in said insulating layers.