Patent ID: 8842230

Claim:
A liquid crystal display device comprising; a substrate, a transistor over the substrate, the transistor comprising a gate electrode, a gate insulating layer over the gate electrode, a first semiconductor layer over the gate insulating layer, a source region and a drain region over the first semiconductor layer, a source electrode over the source region and a drain electrode over the drain region; a first electrode over the substrate; an insulating layer over the first electrode and the transistor; and a second electrode over the insulating layer and connected to one of the source electrode and the drain electrode, wherein the source region and the drain region comprise a semiconductor layer including an impurity element imparting one conductivity type and comprising a microcrystalline semiconductor, wherein the second electrode has a first slit and a second slit and overlaps with the first electrode, wherein the first slit extends in a different direction from which the second slit extends, wherein the source and drain regions extend beyond outer side edges of the source and drain electrodes, wherein a thickness of a first portion of the first semiconductor layer between the source region and the drain region is smaller than a second portion of the first semiconductor layer, and wherein the first semiconductor layer extends beyond outer side edges of the source and drain regions.