EP-4741359-A2 - DISPLAY DEVICE

Abstract

A display device includes a display panel and a pattern glass disposed on the display panel and including a first non-pattern portion, a pattern portion, and a second non-pattern portion, which are arranged in a first direction. The pattern portion includes a plurality of patterns having a predetermined shape and arranged in the first direction and a second direction intersecting the first direction. Openings are defined through the pattern glass between the patterns adjacent to each other, and each of the openings has a symmetrical shape with respect to a third direction intersecting a plane defined by the first and second directions based on a symmetry axis extending in the second direction. The symmetry axis passes through a midpoint of a thickness of the pattern glass.

Inventors

• KIM, SUNGHOON
• KANG, BYUNGHOON
• KIM, SANGHOON
• SEO, Eunwon
• SIM, JINGYU
• LEE, Hyunji
• JUNG, TAEHYEOG
• Hwang, Seongjin

Assignees

• Samsung Display Co., Ltd.

Dates

Publication Date

20260513

Application Date

20240305

Claims (15)

1. A display device comprising: a display panel; and a pattern glass disposed on the display panel and comprising a first non-pattern portion, a pattern portion, and a second non-pattern portion, which are arranged in a first direction, wherein the pattern portion comprises a plurality of patterns having a predetermined shape and arranged in the first direction and a second direction intersecting the first direction, wherein openings are defined through the pattern glass between the patterns that are adjacent to each other, each of the openings has a symmetrical shape with respect to a third direction intersecting a plane defined by the first and second directions based on a symmetry axis extending in the second direction, and the symmetry axis passes through a midpoint of a thickness of the pattern glass.
2. The display device of claim 1, wherein the patterns have wave patterns arranged in a plurality of rows, and the rows correspond to the second direction, optionally wherein each of the wave patterns have a length from 0.625mm to 1.125mm in the second direction, and lengths in the second direction of the wave patterns are different from each other.
3. The display device of claim 2, wherein a distance between the wave patterns adjacent to each other in the second direction is within a range of 10 micrometers to 200 micrometers, and distances between the wave patterns adjacent to each other are different from each other, and optionally wherein the wave patterns adjacent to each other in the second direction have different wavelengths from each other.
4. The display device of claim 2 or claim 3, wherein at least one wave pattern among the wave patterns has a uniform wavelength or wavelengths of the wave patterns vary.
5. The display device of any one of the preceding claims, wherein the openings have a shape corresponding to the patterns when viewed in plan view.
6. The display device of any one of the preceding claims, wherein the patterns have a same shape and are repeatedly arranged, and the patterns are not separated from each other, optionally wherein the patterns have one of a swastika-like shape, a snow crystal shape, a scale-like shape, a pinwheel-like shape, a spiral shape, an octagonal shape, and a column shape.
7. The display device of any one of the preceding claims, wherein the openings have a straight line shape alternately extending in the first direction and the second direction when viewed in plan view, and each of the openings has a width from 5 micrometers to 10 micrometers.
8. The display device of any one of the preceding claims, wherein the patterns have a spiral shape, and the openings have a curved shape when viewed in plan view.
9. The display device of any one of the preceding claims, wherein inner side surfaces of the pattern portion, which are defined by surfaces of the patterns facing each other to define the openings, have a straight line shape extending in the third direction when viewed in the first direction.
10. The display device of any one of claims 1 to 8, wherein inner side surfaces of the pattern portion, which are defined by surfaces of the patterns facing each other to define the openings, have a convex shape toward the openings when viewed in the first direction, and optionally wherein the pattern portion further comprises first slant surfaces connecting the inner side surfaces of the pattern portion and an upper surface of the pattern portion and second slant surfaces connecting the inner side surfaces of the pattern portion and a lower surface of the pattern portion when viewed in the first direction.
11. The display device of any one of the preceding claims, wherein the openings have a tapered shape in which a width of the openings increases going from a midpoint of a thickness of the pattern portion to an upper surface or a lower surface of the pattern portion when viewed in the first direction.
12. A display device comprising: a display panel; and a pattern glass disposed on the display panel and comprising a first non-pattern portion, a pattern portion, and a second non-pattern portion, which are arranged in a first direction, wherein the pattern portion comprises a plurality of patterns having a predetermined shape, arranged in the first direction and a second direction intersecting the first direction when viewed in plan view, and having a wave pattern, wherein openings are defined through the pattern glass between the patterns adjacent to each other in the second direction, and the patterns having the wave pattern have different amplitudes from each other when viewed in plan view.
13. The display device of claim 12, wherein each of the openings has a symmetrical shape with respect to a third direction intersecting a plane defined by the first and second directions based on a symmetry axis extending in the second direction.
14. The display device of claim 12 or claim 13, wherein at least one pattern of the patterns has a uniform wavelength and extends in the first direction.
15. The display device of claim 12 or claim 13, wherein the amplitude varies at least once in each of the patterns.

Description

BACKGROUND 1. Field of disclosure The present disclosure relates to a display device. 2. Description of the Related Art An electronic device displays various images through a display screen to provide a user with information. In general, the electronic device displays the information in an allocated screen area. In recent years, flexible electronic devices including a flexible display panel that is foldable are being developed. Different from a rigid electronic device, the flexible electronic device is foldable, rollable, or bendable. The flexible electronic device, which is capable of being transformed into various shapes, is easy to carry and improves a user's convenience. The electronic device includes a display panel and a window disposed on the display panel and protecting the display panel. The window includes a plurality of patterns to secure flexibility of the flexible electronic device. SUMMARY The present disclosure provides a display device including a pattern glass having improved impact resistance, being easily folded, and preventing a moiré phenomenon. Embodiments of the inventive concept provide a display device including a display panel and a pattern glass disposed on the display panel and including a first non-pattern portion, a pattern portion, and a second non-pattern portion, which are arranged in a first direction. The pattern portion includes a plurality of patterns having a predetermined shape and arranged in the first direction and a second direction intersecting the first direction, openings are defined through the pattern glass between the patterns that are adjacent to each other, each of the openings has a symmetrical shape with respect to a third direction intersecting a plane defined by the first and second directions based on a symmetry axis extending in the second direction, and the symmetry axis passes through a midpoint of a thickness of the pattern glass. Embodiments of the inventive concept also provide a display device including a display panel and a pattern glass disposed on the display panel and including a first non-pattern portion, a pattern portion, and a second non-pattern portion, which are arranged in a first direction. The pattern portion includes a plurality of patterns having a predetermined shape, arranged in a second direction intersecting the first direction when viewed in a plane (in plan view), and having a wave pattern, wherein openings are defined through the pattern glass between the patterns adjacent to each other in the second direction, and the patterns having the wave pattern have different amplitudes from each other when viewed in the plane (in plan view). According to the above, the pattern glass of the display device includes the plural patterns overlapping a folding area. The openings, which have a shape corresponding to the patterns, are defined between the patterns adjacent to each other. The openings extend in the first and second directions. As the pattern glass of the display device has the structure described above, even though an external impact is applied to the pattern glass, the patterns are bent toward the openings in the first and second directions and absorb the external impact. Accordingly, the impact resistance of the pattern glass is improved. According to the above, the openings are defined through the pattern glass of the display device. The openings penetrate the pattern glass. A length in the third direction of inner side surfaces of the patterns, which define the openings, increases. Due to the structure describe above, a resistance of the pattern glass against a folding operation is reduced, and the pattern glass is easily folded. According to the above, the pattern glass of the display device includes plural patterns arranged in the second direction. Each of the patterns includes a wave pattern. The wave patterns have different wavelengths or altitudes from each other. That is, the patterns having shapes different from each other are arranged. Due to the structure, a moiré phenomenon of the display device is prevented. At least some of the above and other features of the invention are set out in the claims. BRIEF DESCRIPTION OF THE DRAWINGS The above and other advantages of the present disclosure will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein: FIG. 1 is a perspective view of an electronic device according to an embodiment of the present disclosure;FIG. 2 is a perspective view of a folded state of the electronic device shown in FIG. 1;FIG. 3 is an exploded perspective view of an electronic device according to an embodiment of the present disclosure;FIG. 4 is a cross-sectional view taken along a line I-I' of FIG. 3;FIG. 5 is a cross-sectional view of a display panel shown in FIG. 3;FIG. 6 is a plan view of a display panel shown in FIG. 5;FIG. 7 is an enlarged view of a first area A1 of FIG. 4;FIG. 8A is a plan view of a pat