A cushion sheet including a cushion film defining a first surface of the cushion sheet; and an adhesive layer on a surface of the cushion film and defining a second surface of the cushion sheet, the cushion film and adhesive layer including a plurality of bubble discharge members inclined with respect to the first and second surfaces and openings extending through the cushion film and the adhesive layer for removing bubbles generated at adhesion, the openings having a first end in the adhesive layer and a second end in the cushion film; and each of the bubble discharge members are inclined at a penetrating angle within the cushion sheet between a respective one of the bubble discharge members and a line perpendicular to a plane of the cushion sheet, the line extending from the first end of the bubble discharge member to the first surface of the cushion sheet.