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US 7,740,945 B2Granted
Brightness enhancement film
AssigneeEternal Chemical Co., Ltd.
InventorsShih Yi Chuang, Chao Yi Tsai, Guo Long Wu
Life of this patent
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Abstract
A brightness enhancement film is provided, which comprises a substrate with a light diffusion layer having a convex-concave structure on one side of the substrate. The brightness enhancement film of the present invention can be used in liquid crystal displays (LCDs) as a light diffusion brightness enhancement film.
Claims10
A brightness enhancement film, comprising:
- a substrate with a light diffusion layer and a brightness enhancement layer, said light diffusion layer being formed by applying a coating layer and having a convex-concave structure on one side of the substrate, wherein the diffusion of the light diffusion layer is between 5% and 90% said brightness enhancement layer being formed by a coating composition with a same refractive index and having a microstructure on the other side of the substrate wherein the microstructure is selected from the group consisting of a regular or irregular prism pattern, rounded prism pattern, rounded prism pattern, solid angle pattern, bead pattern and lenticular pattern.
Dependencies are inferred from the claim text.