Patent ID: 7061461
Filing Date: 2006-06-13
Classification: G09G

Abstract:
1. A method of adjusting a common voltage for an active matrix liquid crystal display device, the liquid crystal display device including a first substrate including a plurality of pixel electrodes arranged in matrix form, a plurality of thin film transistors having a gate electrode and a source electrode, a plurality of data lines transmitting data signals to the source electrode, and a plurality of gate lines transmitting gate signals to the gate electrode from a first end to a second end thereof; a second substrate opposing to the first substrate, the second substrate having a common electrode facing the plurality of pixel electrodes of the first substrate; a liquid crystal layer between the first and second substrates; a gate line driving circuit transmitting gate signals to the first ends of the plurality of gate lines; and a data line driving circuit transmitting data signals to the plurality of data lines, the method, comprising: applying a constant current to the common electrode through a second connection point having a second contact resistance at a position corresponding to the first end of the plurality of gate lines; and applying a common voltage to the common electrode through a first connection point having a first contact resistance at a position corresponding to the second end of the plurality of gate lines.