Patent ID: 8581823
Filing Date: 2013-11-12
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a liquid crystal display panel having a plurality of data lines supplied with data voltages, a plurality of gate lines supplied with scan pulses, wherein a plurality of liquid crystal cells on the liquid crystal display panel are each configured to display one of a plurality of colors, wherein liquid crystal cells arranged in a horizontal line along a gate line direction are configured to display a common color, and wherein liquid crystal cells arranged in each column along a direction of the data lines are arranged to display a repeating sequence of the plurality of colors; a timing controller for generating a polarity control signal having a sequence of polarity levels that vary at intervals of one frame period; a data driving circuit for supplying the data voltages to the data lines having a polarity in response to the polarity control signal; and a gate driving circuit for supplying the scan pulses to the gate lines, wherein the liquid crystal cells are coupled to the data lines and gate lines to receive the data voltages and the gate pulses so that the liquid crystal cells of the liquid crystal display panel are driven in groups, the groups including first liquid crystal cell groups driven so that the data voltages in a frame period have polarities inverted from polarities in an immediately prior frame period, and second liquid crystal cell groups driven so that the data voltages in a frame period have polarities identical to the polarities in an immediately prior frame period, and the first and second liquid crystal cell groups are alternately arranged in a vertical direction at intervals of two horizontal lines, and wherein the positions of the first liquid crystal cell groups alternate with the positions of the second liquid crystal cell groups at intervals of one frame period, wherein each of the first and second liquid crystal cell groups has cells of two adjacent horizontal lines, wherein the polarity control signal comprises: a first polarity control signal sequence generated for a “4i+1”th frame, the first polarity control signal sequence having a level alternating between a first level and a second level at intervals of two horizontal lines, wherein “i” is a positive integer; a second polarity control signal sequence generated for a “4i+2”th frame, the second polarity control signal sequence having a level maintained at one of the first and second levels; a third polarity control signal sequence generated for a “4i+3”th frame, the third polarity control signal sequence having a sequence of levels inverted from the sequence of levels of the first polarity control signal sequence; and a fourth polarity control signal sequence generated for a “4i+4”th frame, the fourth polarity control signal sequence having a level sequence inverted from the sequence of levels of the second polarity control signal sequence.