Patent ID: 7643002
Filing Date: 2010-01-05
Classification: G09G

Abstract:
1. A liquid crystal display device, comprising: a comparator which processes a data value; and a pre-charge controller which pre-charges a data line of a liquid crystal display panel with a pre-charge voltage if the data value is a first value, and pre-charges the data line with a charge share voltage, which has a lower absolute voltage value than the pre-charge voltage if the data value is a second value and the second data value is lower than the first data value, wherein the pre-charge controller includes: a source output enable signal and a polarity control signal for controlling a polarity of the data value, which are inputted thereto; a de-multiplexer which outputs the source output enable signal to any one of a plurality of output terminals in accordance with an output of the comparator and an output of the polarity control signal; a first transistor for supplying the charge share voltage to the data line in accordance with the output of the de-multiplexer if the data value is the second value; a second transistor for supplying a positive pre-charge voltage to the data line in accordance with the output of the de-multiplexer if the data value is the first value; and a third transistor for supplying a negative pre-charge voltage to the data line in accordance with the output of the de-multiplexer if the data value is the first value.