Patent ID: 6128124
Filing Date: 2000-10-03
Classification: G02B,G09F

Abstract:
A gyricon sheet comprising:a) a substrate having two opposed surfaces and at least two layers wherein one of the surfaces is a viewing surface, andb) a collection of optically anisotropic light modulating elements capable of being made rotatable wherein each element is capable of producing at least two observable aspects to an observer favorably situated to observe the viewing surface wherein one aspect is being substantially optically transparent and the other aspect is associated with a first component color wherein at least some of said elements are associated with a first component color, at least some of said elements are associated with a second component color different from the first component color, and at least some of said elements are associated with a third component color different from both the first and second component colors, wherein the elements associated with one of the component colors are substantially contained in a different layer from the elements associated with the other component colors, and wherein the first, second, and third component colors are chosen such that when at least a portion of the elements associated with the first, second and third component colors are arranged to present the aspect associated with the component color to be observed simuftaneously by an observer situated favorably to observe the viewing surface the observer would approximately view white.