An electronic apparatus comprising: a housing; a window; a display panel disposed between the window and the housing, and comprising a first area and a second area which corresponds to peripheries on both sides of the first area; and a cover panel disposed under the display panel, wherein the cover panel comprises an adhesive layer which is partially attached to the display panel and comprises a first periphery parallel to the peripheries on the both sides of the first area, a second periphery parallel to the peripheries on the both sides of the first area and parallel to the first periphery, a third periphery extending from one end of the first periphery to one end of the second periphery, and a fourth periphery extending from the other end of the first periphery to the other end of the second periphery, and a plurality of layers disposed under the adhesive layer, a surface of the adhesive layer partially attached to the second area comprises: a first partial attachment area which comprises a plurality of first protrusion portions attached to a part of the second area and a plurality of first grooves spaced apart from the part of the second area and defined between the plurality of first protrusion portions, and a full attachment area which is completely attached to another part of the second area, and the full attachment area is arranged to extend from the third periphery to the fourth periphery, and is configured to block water from being flowed into the first area from an outside along a path formed by an arrangement of the plurality of first protrusion portions and the plurality of first grooves. a housing; a window; a display panel disposed between the window and the housing, and comprising a first area and a second area which corresponds to peripheries on both sides of the first area; and a cover panel disposed under the display panel, wherein the cover panel comprises an adhesive layer which is partially attached to the display panel and comprises a first periphery parallel to the peripheries on the both sides of the first area, a second periphery parallel to the peripheries on the both sides of the first area and parallel to the first periphery, a third periphery extending from one end of the first periphery to one end of the second periphery, and a fourth periphery extending from the other end of the first periphery to the other end of the second periphery, and a plurality of layers disposed under the adhesive layer, a surface of the adhesive layer partially attached to the second area comprises: a first partial attachment area which comprises a plurality of first protrusion portions attached to a part of the second area and a plurality of first grooves spaced apart from the part of the second area and defined between the plurality of first protrusion portions, and a full attachment area which is completely attached to another part of the second area, and the full attachment area is arranged to extend from the third periphery to the fourth periphery, and is configured to block water from being flowed into the first area from an outside along a path formed by an arrangement of the plurality of first protrusion portions and the plurality of first grooves. a first partial attachment area which comprises a plurality of first protrusion portions attached to a part of the second area and a plurality of first grooves spaced apart from the part of the second area and defined between the plurality of first protrusion portions, and a full attachment area which is completely attached to another part of the second area, and the full attachment area is arranged to extend from the third periphery to the fourth periphery, and is configured to block water from being flowed into the first area from an outside along a path formed by an arrangement of the plurality of first protrusion portions and the plurality of first grooves.