Patent ID: 8044910
Filing Date: 2011-10-25
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: a liquid crystal display panel formed with a plurality of data lines and a plurality of gate lines, the liquid crystal display panel having a plurality of liquid crystal cells; a frame rate adjusting circuit for controlling a frame rate such that the frame rate is maintained at a 1-fold rate in frame periods other than an Nth frame period, where “N” is a multiple of 8 or more, while being increased to an “i”-fold-accelerated rate, where“i” is a positive integer of 2 or more in the Nth frame period, to output reference timing signals in the frame periods other than the Nth frame period, and to output accelerated timing signals in the Nth frame period; a timing controller for generating data timing control signals and gate timing control signals in response to at least one of each reference timing signal and each accelerated timing signal; a logic circuit for accelerating a frequency of a polarity control signal to determine a polarity of a data voltage to be supplied to the liquid crystal cells, in the Nth frame period, the polarity control signal being included in the data timing control signals; a data driving circuit for generating the data voltage in response to the data timing control signals including the polarity control signal; and a gate driving circuit for supplying a scan pulse to the gate lines in response to the gate timing control signals, wherein the logic circuit comprises a frame counter for counting a gate start pulse indicating a start of the scan pulse to count a number of frames, an inverter for generating an inverting signal indicating a point of time when the polarity control signal is inverted in phase in the Nth frame period, in accordance with an output from the frame counter, an exclusive OR gate for exclusively ORing a reference polarity control signal generated from the timing controller and the inverting signal, to generate the polarity control signal, and a multiplexer for outputing a selected one of the reference polarity control signal and the polarity control signal.