DISPLAY DEVICE

1 . A display device comprising:

a display module comprising a display panel;

an arm including an upper arm coupled to a rear of the display module and a lower arm hinge-connected to the upper arm;

a bottom case to which the lower arm is pivotally connected; and

a top case hinge-connected to the bottom case.

2 . The display device of claim 1 , wherein the lower arm comprises:

a lower inner frame hinge-connected to the bottom case; and

a lower outer cover covering the lower inner frame, the lower outer cover forming an outer surface of the lower arm,

wherein the upper arm comprises:

an upper inner frame hinge-connected to the lower inner frame; and

an upper outer cover covering the upper inner frame, the upper outer cover forming an outer surface of the upper arm, and

wherein the lower outer cover comprises a storage groove formed as an outer surface of the lower outer cover is recessed, and the upper arm is received in the storage groove when the upper arm is folded.

3 . The display device of claim 2 , wherein the bottom case comprises:

an outer shell providing an accommodation space, the outer shell forming an outer surface of the bottom case; and

a frame disposed in the accommodation space and coupled to an inside of the outer shell, and

wherein the arm further comprises a bottom mount coupled to the frame of the bottom case.

4 . The display device of claim 3 , wherein the lower inner frame comprises:

a lower part pivotally connected to the bottom mount; and

an upper part extending from the lower part and hinge-connected to the upper inner frame,

wherein the lower part comprises a wiring groove recessed inward and elongated in a lengthwise direction of the arm, and

wherein the wiring groove extends from the bottom mount toward the upper part and bent such that the wiring groove is disposed at a lateral side of the lower part closer to the upper part than the bottom mount.

5 . The display device of claim 3 , wherein the lower inner frame comprises:

a lower part pivotally connected to the bottom mount;

an upper part extending from the lower part and hinge-connected to the upper inner frame,

wherein the upper part comprises:

a first connecting portion hinge-connected to the upper inner frame; and

a second connecting portion facing the first connecting portion, the second connecting portion being spaced apart from the first connecting portion, and

wherein the second connecting portion comprises:

a holder mount; and

a finger extending and bent from one side of the holder mount.

6 . The display device of claim 5 , further comprising a cable holder coupled to the second connecting portion,

wherein the cable holder comprises:

a mounting block fixed to the holder mount; and

a holder tip extending and bent from one side of the mounting block, the holder tip providing a circle shape together with the finger.

7 . The display device of claim 4 , further comprising a cable routed in the arm,

wherein the cable extends from the bottom mount and is disposed in the wiring groove.

8 . The display device of claim 6 , further comprising a cable routed in the arm,

wherein the cable extends to be disposed in the wiring groove and is inserted into the circle shape provided by the holder tip and the finger.

9 . The display device of claim 8 , wherein the upper inner frame comprises:

an elongated rod body;

an opening formed through a portion of the rod body;

a first connecting portion hinged-connected to the first connecting portion of the lower inner frame; and

a second connecting portion disposed facing the first connecting portion of the upper inner frame, the second connecting portion including at least a portion of a cylinder shape to be inserted into the circle shape of the lower inner frame with the cable holder, and

wherein the cable is inserted into the portion of the cylinder shape of the second connecting portion and extends to be inserted into the opening of the rod body.

10 . The display device of claim 9 , wherein the cable is electrically connected to the display panel.

11 . The display device of claim 3 , wherein the bottom mount comprises:

a first piece hinge-connected to a first side of the lower inner frame, the first piece being fixed to the bottom case; and

a second piece hinge-connected to a second side of the lower inner frame, the second piece being fixed to the frame of the bottom case, and

wherein the first piece is spaced apart from the second piece.

12 . The display device of claim 11 , further comprising a cable routed in the arm,

wherein the cable passes between the first piece and the second piece of the bottom mount.

13 . The display device of claim 1 , wherein the display module is configured to be stored in the bottom case or stand upright from the bottom case when the arm performs a pivoting movement.

14 . The display device of claim 9 , further comprising an arm hinge to connect the first connecting portion of the lower inner frame and the first connecting portion of the upper inner frame,

wherein the arm hinge comprises:

a hinge shaft connected to the first connecting portion of the lower inner frame;

a hinge cam rotating on the hinge shaft, the hinge cam being fixed to the first connecting portion of the upper inner frame; and

an elastic member providing an elastic force to the hinge cam with respect to the hinge shaft.

15 . The display device of claim 14 , further comprising a link to connect the arm hinge and the bottom mount.