Importance

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Abstract

A method of manufacturing a light control film includes providing a plurality of alternating layers of transparent material and light absorbing material. Each layer of light absorbing material is interspersed between respective layers of transparent material. The plurality of alternating layers are stacked in a stacking direction perpendicular to the plane of a surface of at least one of the plurality of alternating layers. The method includes cutting the plurality of alternating layers in a first and second cutting plane resulting in an intermediate film including a first cut surface parallel to the first cutting plane and a second cut surface parallel to the second cutting plane. Each of the first and second cutting planes is orientated at an angle less than or equal to 90° to the stacking direction. The method includes hot embossing the repeating prismatic structure on the first cut surface of the intermediate film resulting in a serrated/corrugated first surface.

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First Claim