PRISM SHEET FOR CONTROLLING A VIEWING ANGLE, AND BACKLIGHT ASSEMBLY AND LCD DISPLAYER COMPRISING THE SAME

摘要

The present invention relates a prism sheet included in a backlight assembly of a liquid crystal display device. The prism sheet for viewing angle adjustment according to the present embodiment includes: a prism layer including a plurality of first prism mountains to refract the incoming light; and a reverse prism layer which is formed between the first prism mountains by filling a second material having a predetermined refractive index difference with the first material included in the prism layer to refract the refracted light. The present invention can reduce the generation of a cross torque between a left eye image and a right-eye image compared to a conventional prism or a viewing angle adjustment film of a two-way structure, thereby improving the quality of a three-dimensional image. Also, the viewing angle can be adjusted more easily by using the refractive index of the materials and the angle of the prism mountains.