Title:
FILM FOR BACK FACE PLATE AND POLYESTER FILM, AND IMAGE DISPLAY APPARATUS AND DEVICE WITH FILM FOR BACK FACE PLATE OR POLYESTER FILM MOUNTED THEREIN
Document Type and Number:
WIPO Patent Application WO/2024/004773
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a film for a back face plate, the film being used for an image display apparatus capable of acquiring normal image information in a photoelectric conversion element behind an image display face. The spirit of the present invention is to provide a film for a back face plate, the flim being used for an image display apparatus in which a polarization plate, an image display light-emitting element array, a back face plate, and a photoelectric conversion element are mounted in this order from the viewer side, wherein a phase difference value obtained when light having a wavelength of 590 nm enters, along a plane including a fast axis of the film and the normal axis with respect to the film surface, the film at an incident angle of 40° with the normal axis as reference 0° is 0-1000 nm. The spirit of the present invention is also to provide a polyester film preferably used to the film for a back face plate.
Inventors:
KAMATA RYUTARO (JP)
SUZUKI KEN (JP)
GOUDA WATARU (JP)
SUZUKI KEN (JP)
GOUDA WATARU (JP)
Application Number:
PCT/JP2023/022869
Publication Date:
January 04, 2024
Filing Date:
June 21, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
G02B5/30; C08J5/18; G09F9/30; H10K50/86; H10K59/10
Domestic Patent References:
| WO2016147767A1 | 2016-09-22 |
Foreign References:
| CN112968048A | 2021-06-15 | |||
| JP2016060075A | 2016-04-25 | |||
| JP2015232120A | 2015-12-24 | |||
| KR102305521B1 | 2021-09-30 |
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