Display panel or portion thereof with a transitional graphical user interface

[0001]The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.

[0002]FIG. 1 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a first image in a sequence of the claimed design.

[0003]FIG. 2 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a second image in the sequence of the claimed design.

[0004]FIG. 3 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a third image in the sequence of the claimed design; and,

[0005]FIG. 4 is a front view of a display panel or portion thereof with a transitional graphical user interface showing a fourth image in the sequence of the claimed design.

[0006]The broken lines showing the display panel or portion thereof form no part of the claimed design. The remaining broken lines showing portions of the graphical user interface form no part of the claimed design.

[0007]The appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 1-4. The process or period in which one image transitions to another forms no part of the claimed design.