US Patent 11663933 Display device

A display device is disclosed. The display device includes a flexible display panel, a panel roller, wherein the flexible display panel is wound around or unwound from the panel roller, a main frame extending in a longitudinal direction of the panel roller, wherein the panel roller is coupled to the main frame, an elongated frame member extending in the longitudinal direction of the panel roller, wherein the elongated frame member is spaced apart from the panel roller and the main frame, and a sub frame coupling the elongated frame member with the main frame, wherein the sub frame is coupled to the main frame.