OPTICAL SHEET AND BACK LIGHT ASSEMBLY OF LUQUID CRYSTAL DISPLAY EQUIPPED WITH THE PRISM SHEET

摘要

An optical sheet and a back light assembly of a liquid crystal display with the optical sheet are provided to enable the optical sheet to function as a diffusion sheet and a prism sheet, thereby obtaining a more excellent optical characteristic result. An optical sheet comprises a body portion and a plurality of protrusions(220) which is formed with a predetermined thickness on the body portion. A cross section of the protrusion is a triangular shape or a trapezoidal shape. A scattering part(223) whose surface is coarse is formed on a predetermined portion of the protrusion. The surface of the scattering part is formed as a predetermined bending is formed regularly or irregularly. The scattering part is formed on a top of the protrusion. The scattering part scatters the flowed light.