Optical film structure, backlight module and display

Abstract

An optical film structure including a grating layer and a prism array layer disposed on the grating layer is provided. The grating layer includes a plurality of light-absorbing gratings which are spaced from each other, and each light-absorbing grating extends along with a first long axis direction. The prism array layer includes a plurality of transparent prisms, and each transparent prism extends along with a longitudinal direction. Each transparent prism includes a fundamental plane disposed on the grating layer, a first plane adjacent to the fundamental plane and a second plane adjacent to the fundamental plane and the first plane. A first angle is between the fundamental plane and the first plane, while a second angle is between the fundamental plane and the second plane. The first angle is unequal to the second angle.

Images