Abstract: The present disclosure generally relates to a method for producing lens patterns on a roll which is used to produce optical films wherein the method comprises forming a resin film on a roll comprising a plated layer which has been surface-plated with copper (Cu) or nickel (Ni); producing a preliminary lens pattern by striking the surface of the resin film on the roll with a chisel; etching with an etching solution the roll having the preliminary lens pattern formed thereon; and removing the resin film, and a roll for producing optical films comprising lens patterns formed thereon by the same method.
Type:
Grant
Filed:
August 28, 2009
Date of Patent:
August 20, 2013
Assignee:
Toray Advanced Materials Korea Inc.
Inventors:
Hee-Cheong Lee, Sang-Hoon Lee, Jun-Sang Park, Tae-Yong Ryu