US Patent 11029732 Display device and operating method thereof

A display device includes: a display panel; a first frame to which a first end of the display panel is fixed; and a second frame connected to the first frame, wherein the second frame is moveable in a first direction or a second direction that is opposite to the first direction with respect to the first frame. A second end of the display panel is in a moveable floating state guided by the second frame. The area of an externally exposed surface of the display panel is widened when the second frame is moved in the first direction, and is narrowed when the second frame is moved in the second direction.