Rollable display apparatus

A rollable display apparatus comprising:

• a flexible display panel that includes a pixel array displaying an image;
• a roller part having a surface for winding the flexible display panel;
• a first housing receiving the roller part and having a first opening through which a portion of the display panel passes;
• and
• a rotational controller coupled between the roller part and the first housing, the rotational controller configured to:
• in a first state, enable the roller part to rotate in a first direction to unwind the display panel from the surface of the roller part but prevent rotation of the roller part in a second direction opposite the first direction,
• in a second state, enable the roller part to rotate in the second direction to wind the display panel onto the surface of the roller part, and
• switch from the first state to the second state responsive to receiving a triggering operation from a user,
• wherein the rotational controller comprises:
• a rotation part having a first end coupled to a first end of the roller part in a rotatable manner;
• and
• a rotation stopper contacting the rotation part in the first state,
• wherein the rotation part comprises:
• a holder having an internal hole;
• a rotation axis member that is connected to the roller part through the internal hole;
• a rotation force providing unit that is connected to a lower end of the rotation axis member and is inserted into the internal hole;
• a rotation member that is coupled to the rotation axis member and contacts the rotation stopper when the rotational controller is in the first state;
• a lifter that receives the rotation member;
• a guider that is supported by the holder and configured to guide rising and lowering of the lifter;
• and
• a position restoring member that is disposed between the guider and the lifter.