Title:
RETARDATION FILM AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/018940
Kind Code:
A1
Abstract:
Provided are: a retardation film that has little change in phase difference in heated environments, humidified environments, and after contact with solvents, and that also has excellent solvent resistance; and a method for manufacturing the retardation film. The retardation film according to an embodiment of the present invention comprises a first cured layer, a retardation layer, and a second cured layer, in that order. The retardation layer is formed from a stretched resin film, and the stretched resin film includes a resin containing at least one binding group chosen from carbonate bonds and ester bonds. In the first cured layer and the second cured layer, a cross-linking agent that has a carbon–carbon double bond and the resin included in the stretched resin film are cross-linked via the carbon–carbon double bond.
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Inventors:
NAKANISHI SADAHIRO (JP)
Application Number:
PCT/JP2021/018319
Publication Date:
January 27, 2022
Filing Date:
May 14, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; G02F1/13363; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2017195506A1 | 2017-11-16 | |||
| WO2018042879A1 | 2018-03-08 | |||
| WO2018135360A1 | 2018-07-26 | |||
| WO2016068152A1 | 2016-05-06 | |||
| WO2019069915A1 | 2019-04-11 |
Foreign References:
| JP2009508174A | 2009-02-26 | |||
| JP2007523391A | 2007-08-16 | |||
| US20090167993A1 | 2009-07-02 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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