Flexible display apparatus and method of manufacturing the same

1. A flexible display apparatus, comprising:

a flexible substrate having at least one of a first chamfered corner and including:

a main area having an apex at which a first side and a second side meet,

a first area that shares the first side with the main area, and

a second area that shares the second side with the main area,

wherein a first angle of the first area and a second angle of the second area that share the apex are acute angles;

a display unit including a main display portion on the main area, a first display portion on the first area and a second display portion on the second area, the first area and the second area are bent in side surfaces with respect to the main area, and the first area and the second area include side surface displays;

a touch unit disposed over the display unit and partially extending over the first area and the second area; and

a cover window disposed over the touch unit and partially extending over the first area and the second area,

wherein at least one corner of each of the first and second display portions is an acute angle,

wherein the display unit includes at least one of a second chamfered corner corresponding to the first chamfered corner in a top view, and

wherein the touch unit includes at least one of a third chamfered corner corresponding to the second chamfered corner, and the cover window includes at least one of a fourth chamfered corner corresponding to the third chamfered corner in a top view.

2. The flexible display apparatus as claimed in claim 1 , wherein:

the first area bends relatively to the main area along the first side at a first preset angle,

the second area bends relatively to the main area along the second side at a second preset angle, and

the display unit extends beyond the first and second sides to overlap parts of the first and second areas.

3. The flexible display apparatus as claimed in claim 1 , wherein the main area has a third angle that is an internal angle including the apex, and a sum of the first angle, the second angle, and the third angle is 180°.

4. The flexible display apparatus as claimed in claim 1 , wherein the display unit continuously overlaps the main area and parts of the first and second areas, the display unit being spaced apart from an edge of the flexible substrate by a predetermined distance.

5. The flexible display apparatus as claimed in claim 4 , wherein:

the display unit is spaced apart from the edge of the flexible substrate along an entire perimeter of the flexible substrate, as viewed in a top view, and

the main area of the flexible substrate includes a corner area having the apex at which the first side and the second side meet, the display unit being spaced apart from the corner area.

6. The flexible display apparatus as claimed in claim 5 , wherein, when viewed in the top view, the corner area extends beyond the display unit and has a triangular shape beyond the display unit, the triangular shape including the apex and a side of the display unit defining a base of the triangular shape.

7. The flexible display apparatus as claimed in claim 1 , wherein the touch unit corresponds to a shape of the flexible substrate.

8. The flexible display apparatus as claimed in claim 7 , wherein the cover window corresponds to the shape of the flexible substrate.

9. The flexible display apparatus as claimed in claim 1 , wherein the display unit is integral with the main area, the first area, and the second area of the flexible substrate.

10. The flexible display apparatus as claimed in claim 1 , wherein:

the main area of the flexible substrate has a polygonal shape, the first and second areas being continuous with and surrounding the main area, and

each of the first and second areas has a trapezoidal shape, each of the first and second areas being bent with respect to the main area at a non-zero angle.

11. A method of manufacturing a flexible display apparatus, the method comprising:

forming a flexible substrate having at least one of a first chamfered corner and including a main area having an apex at which a first side and a second side meet, a first area that shares the first side with the main area, and a second area that shares the second side with the main area, such that a first angle of the first area and a second angle of the second area that share the apex are acute angles;

forming a display unit including a main display portion on the main area, a first display portion on the first area and a second display portion on the second area;

forming a touch unit over the display unit to partially extend over the first area and the second area;

forming a cover window over the touch unit to partially extend over the first area and the second area;

forming the first area and the second area as bent in side surfaces with respect to the main area;

forming the first area and the second area to include side surface displays; and

forming at least one corner of each of the first and second display portions as an acute angle,

wherein the display unit includes at least one of a second chamfered corner in a top view, and

wherein the touch unit includes at least one of a third chamfered corner corresponding to the second chamfered corner, and the cover window includes at least one of a fourth chamfered corner corresponding to the third chamfered corner in a top view.

12. The method as claimed in claim 11 , further comprising:

preparing a mother flexible substrate having a polygonal shape with sides and corners at which the sides meet; and

forming a chamfer by cutting the corners of the mother flexible substrate to form the flexible substrate, such that the formed chamfer extends along chamfered corners of the display unit.

13. The method as claimed in claim 12 , wherein forming the chamfer includes cutting a straight line such that the corners are cut into a triangular shape.

14. The method as claimed in claim 11 , wherein forming the flexible substrate includes forming the main area with a third angle that is an internal angle including the apex, such that a sum of the first angle, the second angle, and the third angle is 180°.

15. The method as claimed in claim 11 , wherein forming the display unit includes positioning the display unit to continuously overlap the entire main area and parts of the first and second areas, and be spaced apart from an edge of the flexible substrate by a predetermined distance.

16. The method as claimed in claim 15 , wherein forming the flexible substrate includes forming the main area with a corner area having the apex, and forming the display unit includes arranging the display unit to be spaced apart from the corner area.

17. The method as claimed in claim 16 , wherein forming the main area with the corner area includes forming the corner area with a triangular shape having the apex, such that, when viewed in a top view, the triangular shape extends beyond and is exposed by chamfered corners of the display unit.

18. The method as claimed in claim 11 , wherein the touch unit corresponds to a shape of the flexible substrate over the display unit.

19. The method as claimed in claim 18 , wherein the cover window correspond s to the shape of the flexible substrate over the touch unit.

20. The method as claimed in claim 19 , further comprising:

bending the first area relatively to the main area at a first preset angle along the first side; and

bending the second area relatively to the main area at a second preset angle along the second side, such that the display unit bends and extends beyond the first and second sides to overlap parts of the first and second areas.