On the periphery of the opening, there are formed the rib extending toward the position corresponding to the region of the video non-display region Y of the liquid-crystal panel, not covered by the metal sheet, and the rib in such a shape as to be offset on the outer side of the rib, extending toward the metal sheet, and the rib, and the rib each are at an equal distance from the display face of the liquid-crystal panel, each being in the shape gradually approaching toward the rear face from the respective corners of the opening toward the region in the vicinity of the centers of the respective sides thereof. Consequently, it is possible to form a gap of such a predetermined spacing as not to make a viewer discomfort while keeping the display panel out of contact with a view area periphery of the cabinet.