US Patent 10152087 Flexible display device

A flexible display device including a display panel including a first space area and a second space area; a touch panel disposed on the display panel to sense a touch signal; a first sensor disposed on the touch panel in the first space area and configured to sense a first coordinate signal for the first space area; a second sensor disposed on the touch panel in the second space area and configured to sense a second coordinate signal for the second space area; and a driving control unit configured to calculate a folding angle between the first space area and the second space area based on the first and second coordinate signals and calculate a coordinate of a touch point based on the touch signal.