The ornamental design for a displaymodule, as shown and described.
FIG. 1 is a perspective view of a display module showing my new design;
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing of unclaimed portions of the display module form no part of the claimed design. The dot-dash broken lines define the boundaries of, but not included in, the claimed design.