Patent ID: 8411010

Claim:
A cholesteric liquid crystal display device in which a first step for applying a high voltage pulse to initialize a pixel to be rewritten into a planar state and a second step for applying a low voltage pulse to increase a coexistence ratio of a focal conic state to the planar state in the initialized pixel are performed and a gradation value is determined by a cumulative time during which the low voltage pulse is applied, the device comprising: a voltage generation circuit that outputs a predetermined voltage; and a driver circuit that generates a voltage pulse to be applied to the pixel based on the predetermined voltage supplied from the voltage generation circuit, wherein: the voltage generation circuit comprises: a step-up part that generates a step-up voltage from a power source voltage; a voltage switching part that generates a voltage control signal specifying a voltage value of an output voltage from the voltage generation circuit; and a voltage stabilization part that generates the predetermined voltage in accordance with the voltage control signal from the step-up voltage supplied from the step-up part, wherein: the voltage stabilization part is configured so as to suppress variations in output voltage with respect to variations in the step-up voltage; and the step-up part switches step-up ratios between the first step and the second step.