Title:
FILM, METHOD FOR MANUFACTURING SAME, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/195525
Kind Code:
A1
Abstract:
The present invention relates to a film including a polyimide and an acrylic resin, the average value nH of the refractive index n1 in the first direction where the refractive index is the greatest inside the film surface and the refractive index n2 in the second direction which is orthogonal to the first direction in the film surface, and the refractive index n3 in the thickness direction of the film satisfying nH - n3 ≥ 0.0140. The total light transmittance of the film is preferably at least 85%, the haze is preferably no more than 10%, and the yellowness is preferably no more than 5. This film can be produced by, for example, stretching an unstretched film including a polyimide and an acrylic resin in at least one direction. The film may be a biaxially stretched film.
Inventors:
OGAWA KOHEI (JP)
KATAYAMA KEISUKE (JP)
KATAYAMA KEISUKE (JP)
Application Number:
PCT/JP2023/014281
Publication Date:
October 12, 2023
Filing Date:
April 06, 2023
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
C08J5/18
Domestic Patent References:
| WO2012018121A1 | 2012-02-09 |
Foreign References:
| KR101831598B1 | 2018-02-23 | |||
| JP2021101002A | 2021-07-08 | |||
| JP2020189918A | 2020-11-26 |
Attorney, Agent or Firm:
HARUKA PATENT & TRADEMARK ATTORNEYS (JP)
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