Patent ID: 8871313
Filing Date: 2014-10-28
Classification: C09K,F21V,G02B,Y10T

Abstract:
1. A prism sheet suitable for use in a backlight unit assembly, said prism sheet comprising: a base layer; and a resin cured layer having at least one structured surface, said structured surface being provided with multiple structures, wherein the resin comprises a molecular chain containing a slippable chemical element, and a UV curable composition comprising a urethane acrylate oligomer obtained from a urethane prepolymer, wherein the ratio of a hard segment to a soft segment in the urethane prepolymer is 1:1.32 to 1:3.9; and wherein the prism sheet has an elastic recovery rate of 90% or more, which is represented by Mathematical Formula 1 below when the structured surface of the resin cured layer is pressed to a maximum compression force of 1 g wherein D