Provided are a display device and a preparation method thereof. The display device includes a first substrate, where the first substrate includes a display portion and a bending portion located on at least one side of the display portion; and a second substrate, where the second substrate and the first substrate are disposed opposite to each other, the second substrate includes a first region portion corresponding to the bending portion, and the bending portion is bent towards one side facing away from the second substrate. A protective layer is provided between the bending portion of the first substrate and the first region portion of the second substrate and the bending portion of the first substrate is bent towards one side of the second substrate.

The polyester film according to an embodiment has a coefficient of determination (R.sup.2) of the strain with respect to stress and a crystallinity adjusted to specific ranges, whereby it is possible to achieve the flexibility that does not cause deformation even when a certain stress is sustained for a long period of time and the resistant characteristics to the impact of external pressing. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

Described herein are organosilicon modification layers and associated deposition methods and inert gas treatments that may be applied on a sheet, a carrier, or both, to control van der Waals, hydrogen and covalent bonding between a sheet and carrier. The modification layers bond the sheet and carrier together such that a permanent bond is prevented at high temperature processing as well as maintaining a sufficient bond to prevent delamination during high temperature processing.

A flexible display apparatus includes: a flexible display panel including a first area, a second area, and a bending area between the first area and the second area; a first protection layer including a first surface facing the flexible display panel and a second surface opposite to the first surface; and a driving unit electrically connected to the flexible display panel. The first protection layer is disposed continuously over the first area, the second area, and the bending area to be adhered to the flexible display panel.

A display film includes a transparent glass layer having a thickness of 250 micrometers or less, or in a range from 25 to 100 micrometers. A transparent energy dissipation layer is fixed to the transparent glass layer. The transparent energy dissipation layer has a glass transition temperature of 27 degrees Celsius or less and a Tan Delta peak value of 0.5 or greater, or from 1 to 2.

A display module includes; display panel, which has a fingerprint identification region; a first protective layer disposed on a back surface of the display panel, the back surface being a surface of the display panel opposite to a display surface of the display panel, and the first protective layer being provided therein with a first opening for exposing the fingerprint identification region; and a metal protective disposed on a surface of the first protective layer away from the display panel, the metal protective layer being provided therein with a second opening, the second opening exposing the first opening, and an orthographic projection of an edge of the second opening the display panel being located outside an orthographic projection of an edge of the first opening on the display panel.

A flexible substrate, including: a first organic layer, an inorganic barrier layer, a metal layer and a second organic layer which are stacked in sequence, and the metal layer is for improving binding force between the inorganic barrier layer and the second organic layer. According to embodiments of the present disclosure, the metal layer is provided between the inorganic barrier layer and the second organic layer, so as to improve bonding force between the inorganic barrier layer and the second organic layer, prevent the second organic layer from peeling off from the inorganic barrier layer, and further improve reliability of a flexible display device.

A display apparatus includes a display panel including a central area and an outer area outside the central area and which is bent. A cover panel includes a cover central area overlapping the central area, a cover outer area overlapping the outer area, a light-blocking layer on the display panel and a groove layer disposed on a first surface of the light-blocking layer opposite to a second surface of the light-blocking layer facing the display panel. A plurality of grooves is defined in the groove layer in the cover central area.

An adhesive composition which is excellent in adhesion to various hardly adhesive materials such as polyethylene terephthalate, polyethylene, polypropylene, modified polyphenylene ether, polyphenylene sulfide, and a cycloolefin polymer. Further, an adhesive composition containing the following components (A) to (C) may be described Component (A): (Meth) acrylic triblock elastomer having a weight average molecular weight of 80,000 or more, Component (B): (Meth) acrylate monomer having no hydroxyl group and having a phenoxy group, and Component (C): Radical initiator.

A display device includes a cover window including a curved portion, and a panel member laminated on the cover window. A method of manufacturing a display device includes mounting a cover window including a curved portion on a first jig including a curved portion, mounting a panel member on a second jig that conforms to a surface of the first jig, and laminating the cover window to the panel member by moving a first one of the first jig or the second jig to a first other one of the first jig or the second jig. An apparatus for manufacturing a display device includes a first jig including a mount surface that is partially curved to conform to a surface of a cover window, a second jig including a surface conforming to the mount surface and configured to contact a panel member, and a driving unit.