Portable Display Device

FIG. 1 is a front perspective view of a portable display device, showing my new design.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear perspective view thereof; and,

FIG. 9 is another perspective view showing the portable display device in a state of use.

The evenly-dashed broken lines in the drawings illustrate portions of the portable display device that form no part of the claimed design.