Title:
OPTICAL FILM, FLEXIBLE DISPLAY DEVICE, AND POLYAMIDE-IMIDE RESIN
Document Type and Number:
WIPO Patent Application WO/2020/138041
Kind Code:
A1
Abstract:
An optical film is provided which has high elasticity and a low humidity expansion rate. This optical film contains a polyamide-imide resin which has a weight average molecular weight of 200,000-1,000,000 and which has at least a constituent unit represented by formula (1) [in formula (1), Ar1 represents a divalent aromatic group having a fluoroalkyl group with 1-12 carbons, and X represents a divalent organic group], and a constituent unit represented by formula (2) [In formula (2), X represents a divalent organic group and Y represents a tetravalent organic group].
Inventors:
MASUI KENTARO (JP)
MIYAMOTO KOJI (JP)
AZEMI TAKUSHI (JP)
SAKAMOTO HIROMU (JP)
MOCHIZUKI KATSUNORI (JP)
MIYAMOTO KOJI (JP)
AZEMI TAKUSHI (JP)
SAKAMOTO HIROMU (JP)
MOCHIZUKI KATSUNORI (JP)
Application Number:
PCT/JP2019/050537
Publication Date:
July 02, 2020
Filing Date:
December 24, 2019
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C08G73/14; C08J5/18; G02F1/1335; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Foreign References:
| JP2001139684A | 2001-05-22 | |||
| JP2006265385A | 2006-10-05 | |||
| JP2003287634A | 2003-10-10 | |||
| JP2018119141A | 2018-08-02 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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