The present invention relates to a cover substrate of a display, the cover substrate comprising: one surface having curvatures in at least two directions; and the other surface having a curvature in one direction. A touch device including the cover substrate comprises: a touch window having a curved surface; and a display panel on the touch window, wherein the touch window comprises: the cover substrate having curvatures in at least two directions; and a first sensing electrode and a second sensing electrode on the cover substrate, and the display panel has a curved surface.