A display device according to an exemplary embodiment of the present invention includes a display portion including a plurality of display pixels displaying an image and a dummy portion including a plurality of dummy pixels formed in a periphery region of the display portion. The neck body is formed from a solid metal and has an interface for connecting to a femoral ball. Contexts can vary in their specificity, their semantic content, and their likelihood. At least one wall in the casing is perforated thereby establishing fluid communication through the wall of the casing. The system may also be used to locate targeted substances. The pressure can be distributed most uniformly across the pressure areas by defusing the pressure through a porous medium.