Title:
METHOD FOR MANUFACTURING PHASE DIFFERENCE LAYER INTERMEDIATE, AND METHOD FOR MANUFACTURING POLARIZING PLATE EQUIPPED WITH PHASE DIFFERENCE LAYER
Document Type and Number:
WIPO Patent Application WO/2023/228622
Kind Code:
A1
Abstract:
Provided is a method whereby it is possible to efficiently manufacture a phase difference layer intermediate in which the slow axis direction is controlled with extreme precision and a polarizing plate equipped with a phase difference layer. A method for manufacturing a phase difference layer according to an embodiment of the present invention includes punching out a raw material roll of a phase difference film having a slow axis to a prescribed size while correcting deviation, in a width direction of the raw material roll, of the slow axis with respect to a length direction, and obtaining a sheet phase difference layer intermediate that has a slow axis in a long-side direction.
Inventors:
TANAKA TAKUYA (JP)
IZAKI AKINORI (JP)
IZAKI AKINORI (JP)
Application Number:
PCT/JP2023/015124
Publication Date:
November 30, 2023
Filing Date:
April 14, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B26F1/44
Foreign References:
| JP2013161031A | 2013-08-19 | |||
| US20200122417A1 | 2020-04-23 | |||
| JP2018525680A | 2018-09-06 | |||
| JP2011197629A | 2011-10-06 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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