Abstract
We propose a method for fast bistable switching of cholesteric liquid crystals. Fast switching from the focal conic to the planar state can be achieved by applying an in-plane electric field to the device for a short time. The in-plane field induces a transient state, which relaxes rapidly to the initial planar state. We demonstrated that the switching time from the focal conic to the planar state could be reduced from 150 to 5ms by applying an in-plane field instead of a vertical field. We achieved a total response time of less than 10ms. The proposed device is applicable to a reflective display and to other optical switching devices requiring both fast response time and low power consumption.
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