US Patent 9911369 Rollable display device

A rollable display device is provided. The rollable display device includes: a flexible screen display which is rolled or unrolled on both sides; at least one pair of rollable driving units where each side of the flexible screen display is rolled into or unrolled from one of the pair of rollable driving units; a link driving unit for supporting the rollable driving units to move the sides of the flexible screen display and to roll or unroll the flexible screen display; and a controller for controlling operations of the rollable driving units and the link driving unit.