Patent ID: 6714182
Filing Date: 2004-03-30
Classification: G09G

Abstract:
An active matrix type liquid crystal display (LCD) system, comprising:a first substrate including a plurality of pixel electrodes arranged in matrix form, a plurality of thin film transistors each having a gate electrode and a source electrode, a plurality of data lines transmitting data signals to the source electrodes, and a plurality of gate lines transmitting gate signals to the gate electrodes from a first end to a second end of each gate line; 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 the gate signals to first ends of the plurality of gate lines; a data line driving circuit transmitting the data signals to the plurality of data lines; a constant current source for supplying a constant current to a first side of the common electrode corresponding to one of the first ends of the gate lines, the first side having a first contact resistance; a common voltage supply for applying a common voltage to a second side of the common electrode corresponding to the second end of the one gate line, the second side having a second contact resistance; first and second connection points between the first and second substrates, respectively, through the first and second connection points the constant current and the common voltage being transmitted to the second substrate from the first substrate; and wherein the first contact resistance is between the first side of the common electrode and the first connection point, and wherein the second contact resistance is between the second side of the common electrode and the second connection point.