Title:
OPTICAL FILM, METHOD FOR PRODUCING SAME, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/181696
Kind Code:
A1
Abstract:
Provided is a method for producing an optical film, which comprises: a step wherein a multilayer film, which comprises a core layer that is formed from a resin A and a surface layer that is formed from a resin B and is arranged on a surface of the core layer, is obtained by co-extruding the resin A and the resin B; and a step wherein the surface layer is separated from the multilayer film. Also provided is an optical film which contains a specific block copolymer. The optical film has an absolute value of the retardation in the in-plane direction of 5 nm or less, an absolute value of the retardation in the thickness direction of 10 nm or less, and a water vapor transmission rate of 20 g/(m2·day) or less.
Inventors:
TSUJINO TOMA (JP)
SHU HIROAKI (JP)
SHU HIROAKI (JP)
Application Number:
PCT/JP2018/013201
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
G02B5/30; B32B7/02; B32B27/00; B32B37/26; G02F1/1335
Domestic Patent References:
| WO2016043117A1 | 2016-03-24 |
Foreign References:
| JP2011013378A | 2011-01-20 | |||
| JP2010191385A | 2010-09-02 | |||
| JP2009125984A | 2009-06-11 | |||
| JP2011043602A | 2011-03-03 | |||
| JP2008000985A | 2008-01-10 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: