OPTICAL FILM WITH ANTI-WARP SURFACE

摘要

PROBLEM TO BE SOLVED: To provide an optical film stack.SOLUTION: An optical film stack includes a first optical film (220) having a first major surface and a second major surface. The second major surface (160) is a matte surface having a plurality of microstructures (241). The optical film stack includes a second optical film (230) having a third major surface and a fourth major surface. The third major surface of the second optical film is adjacent to the matte surface of the first optical film. The coefficient of friction, between the matte surface of the first optical film and the third major surface of the second optical film is less than about 1. The coefficient of friction less than about 1 provided by the matte surface enhances the warp performance of the optical film stack.