Patent ID: 7829861

Claim:
A method for fabricating a digital x-ray detector, comprising: providing a substrate having a pixel part, a data pad part and a gate pad part; forming a gate electrode and a gate line at the pixel part of the substrate; forming a first insulating layer on the substrate; forming a first semiconductor layer at an upper portion of the gate electrode; and forming second to fourth semiconductor layers at a drain electrode area, a pixel area and a data pad part, respectively; forming a source electrode, a drain electrode and a data line crossing the gate line to define the pixel area at the pixel part of the substrate such that a portion of the drain electrode is positioned on the second semiconductor layer; forming a ground line such that the ground line is arranged in one direction at the pixel area of the substrate so as to be commonly grounded with an adjacent pixel and a portion of the ground line is positioned on the third semiconductor layer; forming a second insulating layer on the substrate; selectively removing portions of the drain electrode and the second insulating layer to form a first contact hole exposing a portion of the first semiconductor layer and selectively removing portions of the ground line and the second insulating layer to expose a plurality of second contact holes; forming a first connection electrode electrically connected with the side of the drain electrode via the first contact hole and forming a storage electrode electrically connected with the side of the ground line via the plurality of second contact holes; forming a third insulating layer on the substrate; selectively removing a portion of the third insulating layer to form a fifth contact hole exposing a portion of the first connection electrode; forming a charge collecting electrode electrically connected with the first connection electrode via the fifth contact hole and having a portion overlapping with the storage electrode to form a storage capacitor; forming a light conductive film on the substrate; and forming an upper electrode on the light conductive film.