Bi-stable chiral splay nematic mode liquid crystal display device and method of driving the same

A method of driving a bi-stable chiral splay nematic mode liquid crystal display device including first and second substrates, a liquid crystal layer between the first and second substrates, first and second reset electrodes on one of inner surfaces of the first and second substrates, a pixel electrode on the inner surface of the first substrate and a common electrode on the inner surface of the second substrate, comprising:

• applying a data voltage and a common voltage to the pixel electrode and the common electrode, respectively, such that a vertical electric field is generated and the liquid crystal layer transitions from a splay state to a π-twist state during a writing period;
• and
• floating the pixel electrode and the common electrode such that the liquid crystal layer keeps the π-twist state and displays a first image having zeroth to nth grey levels during a memory period,
• wherein the data voltage includes zeroth to nth data voltages gradually increasing, and the writing period includes a first frame, and
• wherein single one of the zeroth to nth data voltages is applied to the pixel electrode during the first frame such that single one of the zeroth to nth grey levels is displayed according to a one-to-one correspondence with a magnitude of the single one of the zeroth to nth data voltages during the first frame.