Patent ID: 7161640

Claim:
An electromagnet radiation imager structure, said structure comprising: a substrate; a plurality of data lines located on said substrate and arranged parallel to each other; a plurality of gate lines located on said substrate and arranged parallel to each other and cross said plurality of data lines, wherein said gate lines and said data lines define a plurality of pixels; and a plurality of thin film transistors located in said pixels respectively, wherein each of said thin film transistors comprises: a gate electrode located on said substrate_and connected with a corresponding gate line; an insulation layer located on said gate electrode; an semiconductor layer located on said insulation layer; first and second contact layer separately located on said semiconductor layer; a drain electrode located on said first contact layer and electrically connected with said semiconductor layer through said first contact layer, wherein said drain electrode connected to a part of a top layer of a storage capacitor; a source electrode located on said second contact layer and electrically connected with said semiconductor layer through said second contact layer, wherein a channel is formed in said semiconductor layer between said source electrode and said drain electrode; a passivation layer located on said drain electrode, said source electrode and said semiconductor layer; and a protection electrode located on said passivation layer for shielding said channel and said drain electrode, wherein said protection electrode is connected with said gate line.