Flexible display device, back film for a flexible display device and preparation method thereof
AssigneeBoe Technology Group Co., Ltd.
InventorsPenghao Gu, Chunyan Xie, Song Zhang, Ziang Han
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a flexible display device. The flexible display device has different base materials for the back supporting film at the bonding region and the non-bonding region, so that it can satisfy the requirements for AOI and bending resistance respectively. The present disclosure also provides a back film for a flexible display device and a preparation method thereof.
Claims11
A back film for a flexible display device, comprising:
- a release layer;
- and
- a first base material layer bounded on the release layer via a transparent first adhesive layer, and a second base material layer bounded on the release layer via a second adhesive layer, wherein there is a gap between orthographic projections of the first base material layer and the second base material layer on the release layer;
- wherein,
- the first base material layer has a transmittance of 85% or more and a haze of 5% or less;
- the second base material is different from the first base material;
- the second base material has an elastic modulus and/or a breaking strength greater than those of the first base material;
- and
- the first adhesive has an elastic modulus greater than that of the second adhesive.
A flexible display device, comprising a flexible display panel and a back supporting film bound to a back surface of the flexible display panel, wherein the flexible display panel comprises a bonding region and a non-bonding region, wherein
- the back supporting film comprises:
- a first base material layer bound to the flexible display panel in at least a portion of the bonding region, and a second base material layer bound to the flexible display panel in at least a portion of the non-bonding region,
- wherein the first base material layer is bound to the flexible display panel via a transparent first adhesive layer, the first base material layer has a transmittance of 85% or more and a haze of 5% or less,
- wherein the second base material layer is bound to the flexible display panel via a second adhesive layer, wherein the second base material is different from the first base material,
- wherein the second base material has an elastic modulus and/or a breaking strength greater than those of the first base material, and
- wherein the first adhesive has an elastic modulus greater than that of the second adhesive.
Dependencies are inferred from the claim text.