PRISM SHEET FOR SCRATCH PREVENTION AND OPTICAL FILM INCLUING IT

摘要

A prism sheet and an optical film including the same are provided to reduce luminance variation and to improve an optical function by including a second prism between first prisms in which a top part is cut. A first prism(312) which has a flat plane in a peak part of a prism is separated as a fixed interval. In prism part(310), a second prism(314) is included between the first prisms. Height of the second prism is lower than height of the first prism. The height of the second prism is 5~20um. Width of the flat plane of the first prism is 2~4um. An optical film is formed by laminating a diffusion sheet, a prism sheet, and a prism protecting sheet. The prism sheet is laminated by overlapping prism sheets of the same kind or different two kinds or more.