Display Panel or Portion Thereof with an Animated Graphical User Interface

FIG. 1 is a front view of a display panel or portion thereof with a first image of an animated graphical user interface showing our new design; FIG. 2 is a second image thereof; and, FIG. 3 is a third image thereof. The subject matter in this patent includes a process or period in which an image changes into another image. This process or period forms no part of the claimed design. The outermost broken lines show the display panel or portion thereof and a boundary of the claimed design and form no part of the claimed design. The remaining broken lines showing portions of the animated graphical user interface form no part of the claimed design.