Title:
FILM, PRODUCTION METHOD THEREFOR, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/100806
Kind Code:
A1
Abstract:
The present invention relates to a film containing a polyimide and an acrylic resin, wherein, within the plane of the film, the refractive index n1 in a first direction in which the refractive index is at a maximum and the refractive index n2 in a second direction perpendicular to the first direction satisfy 100×(n1-n2)/n2 ≥ 1.0. The total lighttransmittance 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 a cast film containing a polyimide and an acrylic resin in at least one direction.
Inventors:
OGAWA KOHEI (JP)
USHIRO HIROYUKI (JP)
KATAYAMA KEISUKE (JP)
ISHIGURO FUMIYASU (JP)
KOMA HIROTO (JP)
USHIRO HIROYUKI (JP)
KATAYAMA KEISUKE (JP)
ISHIGURO FUMIYASU (JP)
KOMA HIROTO (JP)
Application Number:
PCT/JP2022/043764
Publication Date:
June 08, 2023
Filing Date:
November 28, 2022
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
C08J5/18; C08L79/08; C08L101/00; C08L101/12
Domestic Patent References:
| WO2016199509A1 | 2016-12-15 | |||
| WO2016185722A1 | 2016-11-24 | |||
| WO2012018121A1 | 2012-02-09 | |||
| WO2021132279A1 | 2021-07-01 |
Foreign References:
| CN109666251A | 2019-04-23 | |||
| JP2006045368A | 2006-02-16 | |||
| JP2006045369A | 2006-02-16 | |||
| KR101831598B1 | 2018-02-23 |
Attorney, Agent or Firm:
HARUKA PATENT & TRADEMARK ATTORNEYS (JP)
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