CN-115083268-B - Window and display device including the same

Abstract

The present application relates to a window and a display device including the window. The window includes a substrate layer including a first non-folded region, a second non-folded region, a folded region disposed between the first non-folded region and the second non-folded region in a first direction, and at least one first concave portion overlapping the folded region and extending in a second direction intersecting the first direction, a first nanopattern layer disposed in the at least one first concave portion and including a first protrusion pattern, and a first soft portion disposed on the first nanopattern layer.

Inventors

• Jin Guiman
• Ju Minxiang
• JIN XIANGXUN
• Jin Rouli
• Cui Minxun
• HUANG SHENGZHEN

Assignees

• 三星显示有限公司

Dates

Publication Date

20260512

Application Date

20220309

Priority Date

20210316

Claims (20)

1. 1. A window, comprising: A substrate layer comprising: a first non-folded region; a second non-folded region; A folded region disposed between the first non-folded region and the second non-folded region in a first direction, and At least one first concave portion overlapping the folded region and extending in a second direction intersecting the first direction; A first nanopattern layer disposed in the at least one first recess portion and including a first protrusion pattern, and A first soft portion disposed on the first nanopattern layer.
2. 2. The window of claim 1, further comprising: A second soft portion disposed on an upper surface of the base layer, Wherein the first soft portion and the second soft portion comprise the same material.
3. 3. The window of claim 1, further comprising: And a second nanopattern layer disposed on a portion of the upper surface of the base layer overlapping the first and second non-folded regions, and including a second protrusion pattern.
4. 4. The window of claim 1, wherein the first protrusion pattern comprises at least one of a tapered shape, a rotational parabolic shape, and a hemispherical shape.
5. 5. The window of claim 1, wherein, The line width of each of the first protrusion patterns is in the range of 100nm to 350nm, and The height of each of the first protrusion patterns is in a range of 200nm to 3000 nm.
6. 6. The window of claim 1, wherein, The at least one first recessed portion includes a plurality of first recessed portions, and The plurality of first recessed portions are each spaced apart in the first direction.
7. 7. The window of claim 1, wherein, The at least one first recessed portion is recessed from the upper surface of the base layer, and The at least one first recessed portion is recessed from the upper surface to a depth less than a thickness of the base layer.
8. 8. The window of claim 7, wherein the at least one first recessed portion comprises: a first inner surface on the base layer and extending in a third direction intersecting the first direction and the second direction; A second inner surface extending in the third direction and facing the first inner surface, and A first bottom surface perpendicular to the first inner surface and the second inner surface.
9. 9. The window of claim 8, wherein the first nanopattern layer is disposed on the first bottom surface.
10. 10. The window of claim 8, wherein the first nanopattern layer is disposed on the first interior surface and the second interior surface.
11. 11. The window of claim 1, wherein, At least one second concave portion which is concave from the lower surface of the base layer and extends in the second direction is formed in the base layer, and The window further includes a third nanopattern layer disposed on the at least one second recessed portion and including a third pattern of protrusions.
12. 12. The window of claim 11, wherein, The at least one first recessed portion includes a plurality of first recessed portions, The at least one second recessed portion includes a plurality of second recessed portions, and The plurality of first concave portions and the plurality of second concave portions are alternately arranged in the first direction.
13. 13. The window of claim 11, further comprising: and a third soft portion disposed in the second concave portion.
14. 14. The window of claim 1, wherein, The at least one first recessed portion passes through the base layer, and The at least one first recessed portion includes a third inner surface and a fourth inner surface, wherein, The third inner surface is on the substrate layer and extends in a third direction intersecting the first direction and the second direction, and The fourth inner surface extends in the third direction and faces the third inner surface.
15. 15. The window of claim 14, wherein the first nanopattern layer contacts at least a portion of the third interior surface or the fourth interior surface.
16. 16. The window of claim 1, wherein the at least one first recessed portion has a curved surface shape extending in the first direction.
17. 17. A display device, comprising: a display module including a folding region folded about a folding axis extending in a direction, and A window provided on the display module and folded together with the display module, wherein, The window includes: a base layer including a first concave portion overlapping the folded region and extending in the direction; A first nanopattern layer disposed in the first recess portion and including a first protrusion pattern, and A first soft portion disposed on the first nanopattern layer, and The first recessed portion is recessed from an upper surface of the base layer.
18. 18. The display device according to claim 17, further comprising: A second soft portion disposed on the upper surface of the base layer, Wherein the first soft portion and the second soft portion comprise the same material.
19. 19. The display device of claim 17, wherein the first protrusion patterns each include at least one of a tapered shape, a rotational parabolic shape, and a hemispherical shape.
20. 20. The display device according to claim 17, wherein The line width of each of the first protrusion patterns is in the range of 100nm to 350nm, and The height of each of the first protrusion patterns is in a range of 200nm to 3000 nm.

Description

Window and display device including the same Cross Reference to Related Applications The present application claims priority and benefit from korean patent application No. 10-2021-0034283, filed on 3 months 16 of 2021, which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to a window and a display device including the window, and relates to a window having improved optical characteristics while securing folding characteristics and impact resistance characteristics, and a display device including the window. Background Electronic devices such as smart phones, digital cameras, notebook computers, navigation systems, and smart televisions that provide images to users include display devices for displaying images. The display device generates an image and provides the image to a user through a display screen. Recently, with the development of display device technology, various types of display devices are being developed. For example, various flexible display devices that can be deformed, folded, or rolled into a curved shape are being developed. The flexible display device, the shape of which can be variously changed, is easy to carry and the convenience of the user is improved. A foldable display device in a flexible display device can be folded about a folding axis extending in one direction. The foldable display device may include a flexible display panel and a flexible window disposed on the display panel. It should be appreciated that this background section is intended in part to provide a useful background for understanding this technology. However, this background section may also include ideas, concepts or cognizances known or appreciated by those skilled in the relevant art(s) not prior to the corresponding effective application date of the subject matter disclosed herein. Disclosure of Invention The present disclosure provides a window and a display device having improved optical characteristics while securing folding characteristics and impact resistance characteristics. Embodiments provide a window that may include a substrate layer including a first non-folded region, a second non-folded region, a folded region disposed between the first non-folded region and the second non-folded region in a first direction, and at least one first concave portion overlapping the folded region and extending in a second direction intersecting the first direction, a first nanopattern layer disposed in the at least one first concave portion and including a first protrusion pattern, and a first soft portion disposed on the first nanopattern layer. In an embodiment, the window may further comprise a second soft portion disposed on the upper surface of the base layer, wherein the first soft portion and the second soft portion comprise the same material. In an embodiment, the window may further include a second nanopattern layer disposed on a portion of the upper surface of the base layer overlapping the first non-folded region and the second non-folded region, and including a second protrusion pattern. In an embodiment, the first protrusion pattern may include at least one of a substantially conical shape, a substantially rotational parabolic shape, and a substantially hemispherical shape. In an embodiment, the line width of each first protrusion pattern may be in a range of about 100nm to about 350nm, and the height of each first protrusion pattern may be in a range of about 200nm to about 3000 nm. In an embodiment, the at least one first recess portion may include a plurality of first recess portions, and the plurality of first recess portions may be each spaced apart in the first direction. In an embodiment, the at least one first concave portion may be concave from the upper surface of the base layer, and a depth of the at least one first concave portion concave from the upper surface may be smaller than a thickness of the base layer. In an embodiment, the at least one first concave portion may include a first inner surface on the base layer and extending in a third direction intersecting the first direction and the second direction, a second inner surface extending in the third direction and facing the first inner surface, and a first bottom surface perpendicular to the first inner surface and the second inner surface. In an embodiment, the first nanopattern layer may be disposed on the first bottom surface. In an embodiment, the first nanopattern layer may be disposed on the first inner surface and the second inner surface. In an embodiment, at least one second concave portion concave from a lower surface of the base layer and extending in the second direction may be formed in the base layer, and the window may further include a third nanopattern layer disposed on the at least one second concave portion and including a third protrusion pattern. In an embodiment, the at least one first concave portion may include a plurality of first concave portions, and the at