Portable display device

FIG. 1 is a top front perspective view of a portable display device showing our new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom thereof;

FIG. 9 is an enlarged view of the left corner of FIG. 8 ; and,

FIG. 10 is an enlarged view of the right corner of FIG. 8 .

The broken lines in the Figures show portions of the portable display device which form no part of the claimed design.

The shade lines in the Figures show contour and not surface ornamentation.