High-performance light control films with advanced structure for economical fabrication

Abstract

A light control film comprising a) a substrate, b) a microstructured light-transmissive layer on one surface of the substrate, the microstructured light-transmissive layer comprising a microlouver structure composed of periodically arranged louver elements with a louver period P along a first axis across the substrate surface and elongated along a second axis across the substrate surface perpendicular to the first axis across the substrate surface, and c) a light-absorbing material filling the grooves of the microlouver structure, wherein the louver element has a geometric parameter GP as defined in formula (I) in a range of from

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