Patent ID: 7796220

Claim:
A liquid crystal display device comprising: a first substrate and a second substrate; a gate line and a data line on the first substrate that cross each other to define a pixel region; a pixel electrode in the pixel region; a thin film transistor at crossing of the gate and data lines, and connected to the pixel electrode; at least one first electric field distortion unit in the pixel electrode to control a liquid crystal director by electric field distortion; a second electric field distortion unit between the pixel electrode and the first substrate, which the second electric field distortion unit is a stepped portion including a gate metal layer, a gate insulating layer, a semiconductor layer, a source/drain electrode layer and a passivation layer; and a layer of liquid crystal molecules between the first and second substrates, wherein the stepped portion of the second electric field distortion unit is simultaneously formed during the formation of the thin film transistor to implement a multi-domains in one pixel without additional fabrication process, wherein the gate metal layer, the gate insulating layer, a semiconductor layer and the source/drain electrode layer of the stepped portion are patterned in a slit form and they are stacked in sequence, and wherein the passivation layer of the stepped portion is directly contacted on the source/drain electrode layer patterned in the slit form and the first substrate of the pixel region.