In accordance with one or more embodiments of the present disclosure, a display assembly received in a cover by the front mounting method, a combining recess is formed on a corner formed at which a side part and an upper portion of a supporting part meet together, and a first hole is formed on a bottom of the combining recess. A first opening exposing the first hole is formed in a top surface part of a front receiving frame. A bottom part of a rear receiving frame supporting a rear face of a display module has a second hole corresponding to the first hole. An incision portion opening the sidewall part of the rear receiving frame exposes the second hole, the first reinforcement member is bent around an edge of the sidewall part, and connects the opposite edges. As such, the width of a frame of the cover is reduced, and the rear receiving frame improves the strength against external force.