The ornamental design for a displaydevice, as shown and described.
FIG. 1 is a front perspective view of a display device showing our new design;
FIG. 2 is an enlarged front perspective view taken at line 2 in FIG. 1;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a left side view thereof;
FIG. 8 is a right side view thereof; and,
FIG. 9 is a back perspective view thereof.
The evenly spaced broken lines show portions of the display device that form no part of the claimed design. In addition, the dot-dash broken lines indicating an enlargement portion that forms no part of the claimed design.
The oblique line shading in the figures depicts a highly polished or reflective surface, rather than a transparent surface.