Holder for Portable Display Device

FIG. 1 is a front, right, top perspective view of a holder for portable display device showing the support feature in a folded configuration; FIG. 2 is a front view thereof; FIG. 3 is a rear view thereof; FIG. 4 is a left side view thereof; FIG. 5 is a right side view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; FIG. 8 is a front, right, top perspective view of the holder for portable display device showing the support feature in an unfolded configuration; FIG. 9 is a front view thereof; FIG. 10 is a rear view thereof; FIG. 11 is a left side view thereof; FIG. 12 is a right side view thereof; FIG. 13 is a top plan view thereof; and, FIG. 14 is a bottom plan view thereof. The broken lines depict portions of the holder for portable display device that form no part of the claimed design.