Patent ID: 8872860

Claim:
A method for driving a display device, comprising: cumulatively applying a reset pulse of a predetermined level to a first electrode and applying a common voltage to a second electrode opposed to the first electrode to form an initial state of a plurality of cholesteric liquid crystal capsules included in a liquid crystal layer between the first electrode and the second electrode, the reset pulse being cumulatively applied to the first electrode and the common voltage being applied to the second electrode in a reset period; and cumulatively applying a data pulse of a predetermined level to the first electrode in a data period for a predetermined time in order to display light having a grayscale value, wherein: the predetermined time allows the plurality of cholesteric liquid crystal capsules to change from the initial state to a second state the initial state and the second state are selected from the group consisting of a planar state and a focal conic state, and in a sustain period between the reset period and the data period, the plurality of cholesteric liquid crystal capsules reach a stable condition in the initial state during the sustain period when the initial state is the planar state or the focal conic state.