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A Study of the Dynamics of Reflection Color, Helical Axis Orientation, and Domain Size in Cholesteric Liquid Crystal Displays
KENT STATE UNIV OH LIQUID CRYSTAL INST
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The relaxation from the field-induced homeotropic state to the equilibrium planar state of cholesteric liquid crystals is investigated. By using an optical retro-reflection technique, we have isolated the dynamics of the orientation and pitch of cholesteric helices, and through scattering and microscopy techniques, we have determined domain size as a function of time for various surface treatments. These three factors determine the viewing angle, color, and brightness of a display. An analysis of the significance of surface selection in cholestric displays is presented.
APPROVED FOR PUBLIC RELEASE