Drive scheme for driving to the focal conic cholesteric liquid crystal material

摘要

That it provides a [challenge] cholesteric liquid crystal display device. [SOLUTION] cholesteric liquid crystal display device (24), to the focal conic state by driving the surface stabilized cholesteric liquid crystal material layer, a series of pulses (20,34,35,36,37,38,41) I want to apply a drive signal including a. Has sufficient energy to the homeotropic state by driving the cholesteric liquid crystal material layer to the first pulse Horn at least one pulse of the subsequent minimum level to be the focal conic state the cholesteric liquid crystal material layer is driven I have a time-averaged energy reduced to. Thus, the focal conic state of low reflectivity is generated especially can achieve a high contrast ratio. [Selection Figure 13