Patent ID: 7902550

Claim:
A semiconductor device comprising: a thin film transistor comprising a gate electrode formed over a substrate, an insulating film formed over the gate electrode, a semiconductor film formed over the insulating film, a source region and a drain region formed over the semiconductor film, a source electrode over the source region, and a drain electrode formed over the drain region; a first gate wiring being contiguous to the gate electrode; a second gate wiring along the first gate wiring; a first source wiring being contiguous to the source electrode; a second source wiring along the first source wiring; a pixel electrode comprising a conductive material, formed over the thin film transistor, and connected to the drain electrode; and a convex portion arranged in the region surrounded by the first gate wiring and the second gate wiring and the first source wiring and the second source wiring wherein a surface of the pixel electrode is uneven due to the existence of the convex portion, wherein the convex portion includes a layer which comprise a material same as the gate electrode, and wherein the gate electrode and the layer are provided on the substrate.