Patent ID: 8456601

Claim:
A method of manufacturing a liquid crystal display device with a substrate having a switching region, a pixel region, and a data region and common signal region defined thereon, comprising: forming a gate line with a gate electrode in the switch region and a common line in the common signal region; forming a gate insulating layer, an active layer, an ohmic contact layer in at least a portion of the switching region together with just the gate insulating layer in the pixel region; forming source and drain electrodes over ohmic contact layers by creating an opening to the active layer between the source and drain electrodes; forming a data line electrically connected to the source electrode and crossing the gate line; forming a pixel electrode electrically connected to the drain electrode and a common electrode spaced apart from the pixel electrode; and forming a passivation layer on the gate insulating layer between the pixel electrode and the common electrode and on the active layer between the source and drain electrodes, wherein the passivation layer is formed in a lift off process and exposes the source electrode, and wherein the source electrode, drain electrode, common electrode, pixel electrode and a data cover line are formed in the same masking process.