Litron Patent & Trademark Office
Optical sheet having a composite structure thereon and method to make the same
The present invention discloses a method of forming an optical sheet. The optical sheet comprises a substrate and a film. The substrate has a first surface and a second surface opposite to the first surface. The film has a third surface and a fourth surface opposite to the third surface. The third surface of the film is on the first surface of the substrate. The fourth surface of the film comprises a structure corresponding to a combination of a plurality of first convex shapes and a plurality of second convex or concave shapes superimposed on the plurality of first convex shapes.
UBright Optronics Corporation
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Tzu-Hsiang Ching-An Chien-Chih Han-Tsung Yu-Mei Hui-Yong Lung-Pin
Huang Yang Lai Pan Juan Chen Hsin