Foldable display

1. A foldable display, comprising:

a first display unit located on a front surface of the foldable display;

a second display unit located on a first side surface of the foldable display and inclined at a first angle with respect to the first display unit; and

a third display unit located on a second side surface of the foldable display and inclined at a second angle with respect to the first display unit,

wherein the foldable display is configured to be arranged in i) a first configuration in which the first to third display units are exposed and ii) a second configuration in which the first display unit is folded and the second and third display units are exposed, and

wherein when the foldable display is in the second configuration, the second and third display units form a fourth display unit inclined with respect to the folded first display unit.

2. The foldable display of claim 1 , wherein the first angle is less than the second angle.

3. The foldable display of claim 2 , wherein the second and third display units are substantially parallel to each other.

4. The foldable display of claim 3 , wherein a sum of the first and second angles is approximately 180°.

5. The foldable display of claim 3 , wherein the fourth display unit is inclined at the first angle or the second angle with respect to the folded first display unit.

6. The foldable display of claim 5 , wherein the fourth display unit comprises the second and third display units having the same inclined surface.

7. The foldable display of claim 1 , wherein the first to third display units are formed as a single flexible display panel.

8. The foldable display of claim 7 , wherein the first display unit corresponds to a region covering the front surface of the flexible display, and wherein the second and third display units respectively correspond to regions covering the first and second side surfaces of the flexible display.

9. The foldable display of claim 1 , wherein the first display unit is formed as a flexible display panel and wherein the second and third display units are each formed of a rigid display panel.

10. The foldable display of claim 1 , further comprising a fifth display unit located on a back surface of the foldable display adjacent to the second or third display unit.

11. The foldable display of claim 10 , wherein when the foldable display is in the second configuration, the second and third display units and the fifth display unit are exposed.

12. The foldable display of claim 1 , further comprising:

a sensor configured to detect the first and second configurations of the foldable display; and

a controller configured to control the sensor and the first to fourth display units.

13. The foldable display of claim 12 , wherein the controller is further configured to:

activate the first to third display units when the sensor detects that the foldable display is in the first configuration; and

activate the fourth display unit when the sensor detects that the foldable display is in the second configuration.

14. The foldable display of claim 13 , wherein the fourth display unit is configured to display a notification about an incoming event.

15. The foldable display of claim 14 , wherein the fourth display unit is configured to display simple information about the incoming event received by the foldable display.

16. The foldable display of claim 13 , wherein the fourth display unit is configured to provide a lock release interface for unlocking the foldable display.