Optical sheet

Abstract

The present invention relates to an optical sheet for use in a liquid crystal display. The optical sheet of the present invention allows for ease of handling, reduces defective proportions and manufacturing costs, improves throughput, and prevents the deterioration of luminance attributable to the damage of the optical sheet.

1 . A prism sheet for backlight unit assembly comprises:
 a base layer; and   a structure layer whose surface is structurized,   wherein the structure layer is a resin cured layer having a molecular chain containing a slippable element; and   the structure layer has a fractional force of 4.0N to 6.5N when the friction force is measured using SLED having a standard weight of 200 g.   
     
     
         2 . The prism sheet for backlight unit assembly according to  claim 1 , wherein the slippable chemical element is F or Si. 
     
     
         3 . The prism sheet for backlight unit assembly according to  claim 1 , wherein the resin cured layer is formed of a curable resin including F or Si. 
     
     
         4 . The prism sheet for backlight unit assembly according to  claim 3 , wherein the curable resin includes one or more selected from organic silicon compounds and fluorine-based acrylates. 
     
     
         5 . The prism sheet for backlight unit assembly according to  claim 1 , wherein the structure layer has a polygonal shape whose longitudinal section is polygonal, polygonal whose peak is somewhat rounded, semicircular or semielliptical, has a cylinder shape whose longitudinal section is polygonal, polygonal whose peak is somewhat rounded, semicircular or semielliptical and has a curved cylinder shape whose longitudinal section is polygonal, polygonal whose peak is somewhat rounded, semicircular or semielliptical.