Title:
光学フィルム、光学フィルムの製造方法および偏光板
Document Type and Number:
Japanese Patent JP7423918
Kind Code:
B2
Abstract:
According to the present invention, an optical film comprises: a (meth) acrylic copolymer; and a rubber particle having 0°C or less of glass transition temperature. The (meth) acrylic copolymer comprises: a structure unit originated from a monomer A which has a negative photoelastic coefficient of a homopolymer; a structure unit originated from a monomer B which has a positive photoelastic coefficient of the homopolymer and does not have an alicyclic structure; and a structure unit oriented from a monomer C which has the positive photoelastic coefficient of the homopolymer and the alicyclic structure. Moreover, the acrylic copolymer does not have an annular structure in a main-chain. The photoelastic coefficient of the optical film is in a range from -2.0X10^(-12) to 2.0X10^(-12) Pa^(-1).
Inventors:
Koichi Saito
Application Number:
JP2019121615A
Publication Date:
January 30, 2024
Filing Date:
June 28, 2019
Export Citation:
Assignee:
Konica Minolta, Inc.
International Classes:
G02B5/30; C08J5/18; G02F1/1335
Domestic Patent References:
| JP62004711A | ||||
| JP61293211A | ||||
| JP2016048363A | ||||
| JP2016113579A | ||||
| JP2004204018A | ||||
| JP2013078900A |
Foreign References:
| WO2017115787A1 | ||||
| WO2014162369A1 | ||||
| US20110297896 | ||||
| KR1020180034188A |
Attorney, Agent or Firm:
Patent Attorney Corporation Washida International Patent Office
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