Foldable display device
A foldable display device includes: a display panel having a folded portion bendable along a fold line; and a cover window disposed on the display panel, wherein the cover window includes: at least a soft pattern disposed on the folded portion of the display panel; and a hard coating layer disposed on the display panel having the soft pattern formed thereon, and the soft pattern has a triangular cross section.
1. A foldable display device comprising:
a display panel having a folded portion bendable along a fold line;
a cover window disposed on the display panel,
wherein the cover window includes:
a film base;
at least a soft pattern disposed on the film base; and
a hard coating layer disposed on the film base having the soft pattern formed thereon,
wherein the soft pattern has a triangular cross section having a width that decreases with distance from the display panel toward a surface of the cover window opposite the film base, and wherein a base of the soft pattern directly contacts the film base,
wherein the soft pattern has a height that is less than a thickness from a first surface of the hard coating layer to a neutral plane of the hard coating layer, and
wherein the first surface of the hard coating layer contacts the base film.
2. The foldable display device of claim 1 , wherein the soft pattern is disposed to be parallel with respect to the fold line.
3. The foldable display device of claim 1 , wherein the soft pattern has a hardness lower than a hardness of the hard coating layer.
4. The foldable display device of claim 1 , wherein the cover window includes a plurality of soft patterns spaced apart from one another at an interval in a range of about 10 micrometers (pm) to about 100 um.
5. The foldable display device of claim 4 , wherein the hard coating layer has a thickness in a range of about 10 μm to about 100 gm.
6. The foldable display device of claim 1 , wherein the hard coating layer is disposed to cover the soft pattern.
7. The foldable display device of claim 1 , wherein the soft pattern includes a polymer resin.
8. The foldable display device of claim 1 , wherein the hard coating layer includes one of glass and a high-hardness resin film.
9. The foldable display device of claim 1 , further comprising a touch panel disposed between the display panel and cover window.
10. The foldable display device of claim 9 , wherein the width of the triangular cross section decreases as it extends away from the touch panel.
11. The foldable display device of claim 3 , wherein the soft pattern has a hardness of about 2 hardness (H) or lower.
12. The foldable display device of claim 3 , wherein the hard coating layer has a hardness of higher than or equal to about 2H.
13. The foldable display device of claim 1 , further comprising:
a touch panel disposed between the display panel and the cover window, wherein the soft pattern has a triangular cross section having a width decreasing in a direction extending away from the touch panel.