Title:
POLYESTER FILM AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/058058
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polyester film which is for a foldable display and in which the occurrence of cracks is suppressed in a folded part, in order to provide a foldable display having excellent mass productivity, excellent heat resistance, and suppressed occurrence of distortions in an image displayed on a folded portion after repeatedly bending. The present invention pertains to a polyester film having a tanδ of at most 0.040 at 100ºC, as obtained by the dynamic viscoelasticity measurement using tension in at least one direction among the longitudinal direction and the width direction.
Inventors:
MATSUMURA MEI (JP)
NISHIO SHOTARO (JP)
NISHIO SHOTARO (JP)
Application Number:
PCT/JP2023/032746
Publication Date:
March 21, 2024
Filing Date:
September 07, 2023
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
C08J5/18; B32B27/36; G09F9/00; G09F9/30
Domestic Patent References:
| WO2021215349A1 | 2021-10-28 | |||
| WO2018159285A1 | 2018-09-07 | |||
| WO2021199896A1 | 2021-10-07 |
Foreign References:
| JP2016124218A | 2016-07-11 | |||
| JP2022124921A | 2022-08-26 | |||
| JP2022122202A | 2022-08-22 |
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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