Patent ID: 8164557

Claim:
A method for driving a liquid crystal display device comprising: providing a liquid crystal element whose incident light transmittance corresponds to an OFF state, applying a plurality of pulses having a first voltage to the liquid crystal element in a first period which is a first part of a frame period, each pulse having a width shorter than a rise time which is a time that the light transmittance of the liquid crystal element takes to change to a gray-scale state when a reference voltage, lower than the first voltage, is applied to the liquid crystal element; applying a constant non-null second voltage to the liquid crystal element in a second period which is a second part of the frame period, situated after the first period; and applying a third voltage lower than an absolute value of a threshold voltage to the liquid crystal element in a third period which is a third part of the frame period, situated after the second period, wherein the applied pulses are separated from each other by an interval of time substantially equal to the width of the pulses; wherein an absolute value of the first voltage is higher than the constant non-null second voltage, wherein the incident light transmittance of the liquid crystal element is changed from the OFF state to the gray-scale state in the first period and maintained in the gray-scale state in the second period; and wherein the third period is substantially equal to a fall time defined as a time necessary for the incident light transmittance of the liquid crystal element to change from the gray-scale state to the OFF state when no voltage is applied.