Patent ID: 6552762
Filing Date: 2003-04-22
Classification: G02F

Abstract:
A light-modulating, electrically responsive privacy screen comprising:(a) a transparent substrate; (b) an electrically conductive layer formed over the substrate; (c) a light-modulating layer disposed over the electrically conductive layer and including at least one dispersible light-modulating material and coalescence limiting colloidal material into which the dispersible light-modulating material(s) is provided so that such dispersible light-modulating material coalesces to form a set of domains of uniform size having at least two optical states, the first optical state being present in the absence of an electrical field and the second being caused by the application of an electrical field and wherein one of the optical states cause the light-modulating layer to be transparent and the other optical state causes the light-modulating layer to restrict a user viewing through the privacy screen and thereby provide an appropriate level of privacy.