Patent ID: 8878184

Claim:
A semiconductor device comprising: a thin film transistor comprising: a gate electrode formed of a first conductive layer; a first insulating layer over the gate electrode; a first semiconductor film formed of a first semiconductor layer over the first insulating layer, wherein the first semiconductor film is overlapped with the gate electrode; a channel protective film which is formed of a second insulating layer over the first semiconductor film, wherein the channel protective film is overlapped with the gate electrode; and a source electrode and a drain electrode over the first semiconductor film, wherein the source electrode and the drain electrode are formed of a second conductive layer, and wherein the source electrode and the drain electrode are electrically connected to the first semiconductor film; a third insulating layer formed over the source electrode and the drain electrode, wherein the third insulating layer is in contact with the channel protective film; a first electrode formed of a third conductive layer over the third insulating layer, wherein the first electrode is in contact with one of the source electrode and the drain electrode through a contact hole formed in the third insulating layer; a storage capacitor formed of a stacked body which includes a capacitor wiring, the third insulating layer, and the first electrode, the capacitor wiring comprising a first wiring formed of the second conductive layer; and a connection region comprising: a second wiring formed of the first conductive layer; and a second electrode formed of the third conductive layer, wherein the second electrode is in contact with a side surface of the other of the source electrode and the drain electrode, and wherein the second electrode is in direct contact with the second wiring.