Electronic device having flexible display module
An electronic device including a flexible display module is provided. The flexible display module includes a patterned window. The patterned window includes a plurality of patterned portions. The plurality of patterned portions each have at least three corners having a predetermined curvature. One or more first corners formed on an upper side of the patterned window have a first curvature, and one or more second corners formed on a lower side of the patterned window have a second curvature, the first curvature and the second curvature being different from each other.
1. An electronic device including a flexible display,
wherein the flexible display includes a patterned window,
the patterned window comprising a plurality of patterned portions, and
the plurality of patterned portions each having at least three corners having a predetermined curvature,
wherein a first corner formed on an upper side of the patterned window by edge rounding has a first curvature,
wherein a second corner formed on a lower side of the patterned window by edge rounding has a second curvature, the first curvature and the second curvature being different from each other, and
wherein the patterned window includes a plurality of erasing portions vertically penetrating the patterned window, extending from the upper side of the patterned window to the lower side of the patterned window, and separating the plurality of patterned portions.
2. The electronic device of claim 1 ,
wherein the flexible display is divided into a foldable area comprising the patterned portions and a flat area devoid of the patterned portions, and
wherein the flat area and the foldable area form a plane having an angle of substantially 180 degrees in an unfolded state and face each other in substantially 0 degrees in a folded state.
3. The electronic device of claim 1 ,
wherein the flexible display further includes a protective layer and one or more functional layers, and
wherein the patterned window further includes an adhesive member for bonding the protective layer and the one or more functional layers.
4. The electronic device of claim 3 , wherein the adhesive member at least partially surrounds the patterned window.
5. The electronic device of claim 3 , wherein the adhesive member fully surrounds the patterned portions of the patterned window.
6. The electronic device of claim 1 ,
wherein each patterned portion of the plurality of patterned portions includes a first inclined surface on one side and a second inclined surface on another side, and
wherein the first inclined surface and the second inclined surface are connected to each other by a corner formed on an upper side of each of the patterned portions.
7. The electronic device of claim 6 , wherein an inclination of the first inclined surface and the second inclined surface is determined based on an irradiation angle of a beam irradiated to form a patterned portion of the plurality of patterned portions.
8. The electronic device of claim 6 , wherein the first inclined surface and the second inclined surface are symmetrical to each other.
9. The electronic device of claim 6 , wherein the first inclined surface and the second inclined surface are asymmetrical to each other.
10. The electronic device of claim 1 ,
wherein a distance between the patterned portions decreases from the first corner of a patterned portion of the plurality of patterned portions to a predetermined point, and
wherein a distance between the patterned portions increases from the predetermined point to a bottom point to correspond to a second curvature formed in the second corner.
11. The electronic device of claim 10 , wherein a height from a top end to the bottom point of a patterned portion of the plurality of patterned portions has a same height as an edge of the patterned window.
12. The electronic device of claim 10 , wherein a height from a top end to the bottom point of a patterned portion of the plurality of patterned portions is smaller than a height of an edge of the patterned window.
13. The electronic device of claim 1 , wherein a patterned portion of the plurality of patterned portions is made by a process of forming a modified region by irradiating laser obliquely to at least one region of the patterned window, and a wet etching process performed for the modified region.
14. The electronic device of claim 1 , wherein the first corner has a curvature of 0.05 R or 0.02 R or greater.
15. The electronic device of claim 1 , wherein a distance between second corners of the patterned portions is in a range of 0.3 times to 0.6 times a distance between first corners thereof.
16. The electronic device of claim 1 , wherein a distance between the patterned portions becomes smaller as the second curvature of the second corner increases.
17. The electronic device of claim 1 , wherein a distance between the patterned portions becomes smaller as the first curvature of the first corner decreases.
18. The electronic device of claim 1 , wherein the second curvature decreases as the first curvature increases.
19. The electronic device of claim 1 , wherein in at least a portion of the patterned window, two patterned portions, of the plurality of patterned portions are spaced apart in a first direction, extending in a second direction.
20. The electronic device of claim 19 , wherein when the patterned window is viewed in a third direction perpendicular to the first and second directions, at least a portion of the patterned window is patterned in a clamp shape, and another portion is patterned in a zigzag shape.
21. The electronic device of claim 1 , wherein each of the plurality of erasing portions comprises a trench, a recess, or a hole vertically penetrating the patterned window.