Filter for liquid crystal display device
AssigneeSumitomo Chemical Company, Limited
InventorsMasaru Honda, Shigeo Hozumi, Shinichiro Kitayama
Life of this patent
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Abstract
A filter for a liquid crystal display device, having a light diffusing plate which is obtained by forming a composition in the form of a film which contains at least two photopolymerizable oligomers or monomers having refractive indexes which differ from each other by at least 0.01 and irradiating UV light on the composition. When the filter is fitted to a light emitting side of a liquid crystal display device, an angle of view of the liquid crystal display face plane is widened, shadows due to opaque parts of the device are reduced, and a Moire fringe is hardly formed.
Claims13
A method for widening a view angle of a liquid crystal display device comprising fitting a filter to a liquid crystal display device, wherein said filter comprises a light diffusing plate which is obtained by shaping into a film a composition comprising at least two photopolymerizable oligomers or monomers having refractive indexes which differ by at least 0.01 and irradiating ultraviolet light on said film of the composition, wherein the polymerizable oligomers or monomers have acrylate functional groups.
Dependencies are inferred from the claim text.