Foldable display and electronic device comprising same

1 . An electronic device comprising:

a first housing;

a second housing;

a hinge structure foldably connecting the first housing and the second housing to each other; and

a flexible display comprising a first portion on the first housing and a second portion on the second housing, the flexible display being foldable according to folding of the first housing and the second housing with respect to each other,

wherein the flexible display comprises a glass layer,

wherein the glass layer comprises a flexible part that is bendable and comprises a plurality of slits, and

wherein at least a portion of a side surface of each of the plurality of slits comprises a rough surface.

2 . The electronic device of claim 1 , wherein the flexible part comprises:

a first area; and

a second area that is closer than the first area to a bending axis of the glass layer, and

wherein the rough surfaces of slits in the second area, among the plurality of slits, have a roughness that is greater than a roughness of the rough surfaces of slits in the first area, among the plurality of slits.

3 . The electronic device of claim 1 , wherein a roughness of the rough surface of each slit of the plurality of slits increases from an end of the slit toward a center of the slit.

4 . The electronic device of claim 1 , wherein the glass layer further comprises a first surface facing a first direction, and a second surface facing the first surface, and

wherein at least a portion of at least one of the first surface or the second surface comprises a second rough surface.

5 . The electronic device of claim 4 , wherein the at least one of the first surface or the second surface comprising the second rough surface is in an area between the plurality of slits.

6 . The electronic device of claim 1 , wherein the glass layer further comprises a first surface facing a first direction and a second surface facing the first surface, and

wherein the flexible display further comprises a filling member facing at least one of the first surface or the second surface and filled inside at least one of the plurality of slits.

7 . The electronic device of claim 1 , wherein the flexible part further comprises:

a first area; and

a second area that is closer than the first area to a bending axis of the glass layer or comprises the bending axis, and

wherein slits in the second area, among the plurality of slits have a width that is greater than a width of slits in the first area, among the plurality of slits.

8 . The electronic device of claim 1 , wherein the flexible part further comprises:

a first area; and

a second area that is closer than the first area to a bending axis of the glass layer or comprises the bending axis, and

wherein a thickness of the first area is greater than a thickness of the second area.

9 . The electronic device of claim 8 , wherein the glass layer further comprises a first surface facing a first direction, and a second surface facing the first surface, and

wherein the flexible display further comprises a filling member facing at least one of the first surface or the second surface and filled inside at least one of the plurality of slits.

10 . The electronic device of claim 9 , wherein the flexible display further comprises a film layer on the first surface.

11 . The electronic device of claim 10 , wherein the flexible display further comprises a protective layer on the film layer, and

wherein the filling member is filled in at least a part between the film layer and the protective layer.

12 . A flexible display comprising a glass layer,

wherein the glass layer comprises a flexible part that is bendable and comprises a plurality of slits, and

wherein at least a portion of a side surface of each of the plurality of slits comprises a rough surface.

13 . The flexible display of claim 12 , wherein the flexible part comprises:

a first area; and

a second area that is closer than the first area to a bending axis of the glass layer, and

wherein the rough surfaces of slits in the second area, among the plurality of slits, have a roughness that is greater than a roughness of the rough surfaces of slits in the first area, among the plurality of slits.

14 . The flexible display of claim 12 , wherein a roughness of the rough surface of each slit of the plurality of slits increases from an end of the slit toward a center of the slit.

15 . The flexible display of claim 12 , wherein the glass layer further comprises a first surface facing a first direction, and a second surface facing the first surface, and

wherein at least a portion of at least one of the first surface or the second surface comprises a second rough surface.

16 . The flexible display of claim 12 , wherein the glass layer further comprises a first surface facing a first direction and a second surface facing the first surface, and

wherein the flexible display further comprises a filling member facing at least one of the first surface or the second surface and filled inside at least one of the plurality of slits.

17 . The flexible display of claim 12 , wherein the flexible part further comprises:

a first area; and

a second area that is closer than the first area to a bending axis of the glass layer or comprises the bending axis, and

wherein a thickness of the first area is greater than a thickness of the second area.

18 . The flexible display of claim 17 , wherein the glass layer further comprises a first surface facing a first direction, and a second surface facing the first surface, and wherein the flexible display further comprises a filling member facing at least one of the first surface or the second surface and filled inside at least one of the plurality of slits.

19 . The flexible display of claim 18 , wherein the flexible display further comprises a film layer on the first surface.

20 . The flexible display of claim 19 , wherein the flexible display further comprises a protective layer on the film layer, and

wherein the filling member is filled in at least a part between the film layer and the protective layer.