Patent ID: 7508037

Claim:
A poly-silicon liquid crystal display device comprising: a poly-silicon layer having a TFT region and a storage capacitor region, wherein the storage capacitor region includes a capacitor electrode region and an impurity injection region having an N-type impurity injection region and a P-type impurity injection region; a first insulating layer on the poly-silicon layer; a gate electrode and a capacitor electrode on the first insulating layer; a second insulating layer on the first insulating layer including the gate electrode and the a capacitor electrode; a first contact hole formed in the second insulating layer and the first insulating layer to expose the N-type impurity injection region and the P-type impurity injection region of the polysilicon layer; a conductive layer formed on the second insulating layer including the first contact hole and connected to the N-type impurity injection region and the P-type impurity injection region of the impurity injection region; a passivation layer on the second insulating layer including the conductive layer; a second contact hole formed in the passivation layer to expose the conductive layer; and a pixel electrode on the passivation layer and electrically connected to the conductive layer thorough the second contact hole.