Title:
LAMINATE FILM AND USE OF THE SAME
Document Type and Number:
Japanese Patent JP2020196257
Kind Code:
A
Abstract:
To provide a laminate film for protecting an organic EL module of a foldable display, which prevents generation of cracks in a folding portion, in order to provide a foldable display that is highly mass-producible and unlikely to cause distortion in an image displayed in the folding portion after repeatedly folded.SOLUTION: The laminate film for protecting an organic EL module of a foldable display is a laminate film having an adhesive layer on at least one surface of a polyester film, in which the polyester film satisfies the following conditions. The polyester film has (1) a refractive index in a bending direction of 1.590 to 1.620; (2) a refractive index in the direction of a folding portion of 1.670 to 1.700; (3) a refractive index in a thickness direction of 1.520 or less; and (4) a density of 1.380 g/cm3 or more (where the bending direction is a direction orthogonal to the folding portion when the polyester film is folded).SELECTED DRAWING: Figure 1
Inventors:
KAWAI KIWAMU
NISHIO SHOTARO
SHIMIZU AKIRA
NISHIO SHOTARO
SHIMIZU AKIRA
Application Number:
JP2020086714A
Publication Date:
December 10, 2020
Filing Date:
May 18, 2020
Export Citation:
Assignee:
TOYO BOSEKI
International Classes:
B32B27/36; B32B7/023; B32B27/00; H01L51/50; H05B33/04