Mobile terminal including flexible display

1. A mobile terminal comprising:

a first frame;

a second frame slidably coupled to the first frame and configured to:

move with respect to the first frame in a first direction such that the mobile terminal is switched from a first state to a second state; and

move with respect to the first frame in a second direction while the mobile terminal is in the second state such that the mobile terminal is switched to the first state, the second direction being opposite to the first direction;

a third frame configured to move in the first direction or the second direction with respect to the second frame;

a flexible display comprising:

a first region coupled to the first frame;

a second region coupled to the third frame; and

a third region positioned between the first region and the second region and configured to curve around the second frame; and

a display frame coupled to a rear surface of the third region of the flexible display,

wherein the second frame comprises:

a side portion positioned at an end thereof facing in a third direction perpendicular to the first direction; and

a guide rail formed on the side portion and including a front rail formed on a front side of the mobile terminal and a rear rail formed on a rear side of the mobile terminal,

wherein the display frame comprises a plurality of guide hooks positioned at an end thereof and inserted into the guide rail, and

wherein at least one of the guide hooks positioned at the rear rail moves to the front rail when the mobile terminal is switched from the first state to the second state.

2. The mobile terminal of claim 1 , wherein the side portion of the second frame comprises a rear side portion configured to cover an end of the display frame positioned on the rear side of the mobile terminal and facing in the third direction.

3. The mobile terminal of claim 2 , wherein the side portion of the second frame further comprises a front side portion arranged in front of the rear side portion and positioned deeper than the rear side portion protruding from the front side portion such that a step is formed between the front side portion and the rear side portion.

4. The mobile terminal of claim 3 , wherein the front side portion comprises an opening formed to expose the end of the display frame facing in the third direction for the display frame positioned on the front side of the mobile terminal.

5. The mobile terminal of claim 3 , wherein the end of the display frame and the front side portion are aligned.

6. The mobile terminal of claim 1 , wherein:

the display frame further comprises a plurality of support bars extending in the third direction and arranged side by side in the first direction; and

an inner side of a cross section of each of the support bars is shorter than an outer side of the cross section.

7. The mobile terminal of claim 1 , wherein the display frame further comprises:

a plurality of support bars extending in the third direction and arranged side by side in the first direction; and

extended ends extending from corresponding ends of each of the support bars to surround a side surface of the flexible display positioned in front of the support bars.

8. The mobile terminal of claim 7 , wherein a spacing between neighboring extended ends is narrower than a spacing between corresponding neighboring support bars.

9. The mobile terminal of claim 1 , wherein:

the display frame further comprises a plurality of support bars extending in the third direction and arranged side by side in the first direction; and

the guide hooks are formed apart from the support bars in a thickness direction of the mobile terminal.