Flexible display apparatus
A flexible display apparatus is disclosed. The flexible display apparatus includes a flexible substrate including a display area and a non-display area. The flexible display apparatus further includes an organic light-emitting element disposed on the flexible substrate. The flexible display apparatus further includes a cover member disposed on the organic light-emitting element, the cover member comprising at least one plate glass layer including a plate glass and an adhesive layer configured to cover the plate glass. The plate glass has a cusp at a lateral portion.
1 . A flexible display apparatus comprising:
a flexible substrate including a display area and a non-display area;
an organic light-emitting element on the flexible substrate; and
a cover member on the organic light-emitting element, the cover member comprising:
at least one plate glass layer including a plate glass and an adhesive layer that covers the plate glass,
wherein the plate glass has a cusp on a lateral portion of the plate glass.
2 . The flexible display apparatus of claim 1 , wherein the lateral portion includes:
a first inclined surface configured to connect an edge of a top surface of the plate glass to the cusp, the first inclined surface inclined at a first angle with respect to a horizontal plane passing through the cusp; and
a second inclined surface configured to connect an edge of a bottom surface of the plate glass to the cusp, the second inclined surface inclined at a second angle which is different from the first angle with respect to the horizontal plane.
3 . The flexible display apparatus of claim 2 , wherein the first angle and the second angle are acute angles, and the first angle is greater than the second angle.
4 . The flexible display apparatus of claim 2 , wherein a second vertical height between the horizontal plane and the bottom surface of the plate glass is shorter than a first vertical height between the horizontal plane and the top surface of the plate glass.
5 . The flexible display apparatus of claim 1 , wherein the adhesive layer covers a top surface of the plate glass and the lateral portion thereof.
6 . The flexible display apparatus of claim 1 , wherein the adhesive layer has a modulus of greater than 1.0×10 6 Pa.
7 . The flexible display apparatus of claim 1 , wherein a thickness of the plate glass is 100 μm or less.
8 . The flexible display apparatus of claim 7 , further comprising:
a shatterproof layer on the plate glass; and
a hard coating layer on the shatterproof layer,
wherein the adhesive layer is between the shatterproof layer and the plate glass.
9 . The flexible display apparatus of claim 8 , wherein the shatterproof layer has a pencil hardness of greater than 6H.
10 . The flexible display apparatus of claim 1 , wherein a thickness of the plate glass is in a range of 100 μm to 350 μm and has flame retardancy.
11 . The flexible display apparatus of claim 10 , further comprising:
a flame-retardant film layer on the plate glass; and
a hard coating layer on the flame-retardant film layer,
wherein the adhesive layer is between the flame-retardant film layer and the plate glass.
12 . The flexible display apparatus of claim 11 , wherein the flame-retardant film layer comprises a transparent material having a limiting oxygen index of 27 or more.
13 . The flexible display apparatus of claim 11 , wherein the flame-retardant film layer includes a polyimide-based material or a polycarbonate-based material.
14 . The flexible display apparatus of claim 11 , wherein the adhesive layer comprises a transparent material having a limiting oxygen index of 27 or more.
15 . The flexible display apparatus of claim 11 , wherein the adhesive layer includes a polysiloxane-based material.
16 . The flexible display apparatus of claim 11 , wherein a thickness of the adhesive layer between the flame-retardant film layer and the plate glass is in a range of 25 μm to 100 μm.
17 . The flexible display apparatus of claim 16 , further comprising:
an adhesive layer between the plate glass and the organic light-emitting element,
wherein a thickness of the adhesive layer between the plate glass and the organic light-emitting element is in a range of 25 μm to 300 μm.
18 . The flexible display apparatus of claim 10 , wherein the cover member comprises:
a first plate glass layer; and
a second plate glass layer on an upper portion of the first plate glass layer,
wherein the first plate glass layer and the second plate glass layer each include a respective plate glass and a respective adhesive layer.
19 . The flexible display apparatus of claim 18 , wherein a thickness of the respective plate glass included in each of the first plate glass layer and the second plate glass layer is in a range of 200 μm to 350 μm.
20 . The flexible display apparatus of claim 1 , further comprising:
a backplate under the flexible substrate;
a plate assembly under the backplate;
an optical control layer between the organic light-emitting element and the cover member; and
a black matrix layer on a top surface or a bottom surface of the plate glass corresponding to the non-display area.