Display Panel or Portion Thereof with Graphical User Interface

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a display panel or portion thereof with graphical user interface showing our new design; and,

FIG. 2 is a front view thereof shown with environmental matter.

The long dash-short dash broken lines represent boundaries of the claimed design and form no part of the claimed design. The evenly spaced broken lines forming a square in FIG. 1 depict a display panel or portion thereof and form no part of the claimed design. The evenly spaced broken lines in FIG. 2 showing a display device illustrate environmental matter that forms no part of the claimed design.