公开(公告)号：US09671542B2

公开(公告)日：2017-06-06

申请号：US14895500

申请日：2014-06-03

Applicant: InkTec Co., Ltd.

Inventor： Kwang-Choon Chung ,  Insook Yi ,  MinHee Kim ,  Ji Hoon Yoo

IPC: G02B5/30 ,  G02B1/08

CPC classification number: G02B5/3058 ,  G02B1/08 ,  G02B5/3033 ,  G02B5/3041

Abstract: Provided herein is a method for producing a nano polaroid film using a one-pack type or two-pack type blackening ink so that a single layer film may replace a conventional polaroid film generally produced by superposing various types of optical films, and especially, a method for producing a nano polaroid film consisting of one film and having excellent observability by coating a transparent nano pattern substrate with a functional ink that contains a blackening material, and then removing particles formed on protruding portions using an etching solution, and refilling the functional ink into grooves.