Display panel or portion thereof with a transitional graphical user interface

FIG. 1 is a front view of a display panel or portion thereof with a graphical user interface showing a first image in a sequence;

FIG. 2 is a front view of a display panel or portion thereof with a graphical user interface showing a second image thereof;

FIG. 3 is a front view of a display panel or portion thereof with a graphical user interface showing a third image thereof;

FIG. 4 is a front view of a display panel or portion thereof with a graphical user interface showing a fourth image thereof;

FIG. 5 is a front view of a display panel or portion thereof with a graphical user interface showing a fifth image thereof;

FIG. 6 is a front view of a display panel or portion thereof with a graphical user interface showing a sixth image thereof;

FIG. 7 is a front view of a display panel or portion thereof with a graphical user interface showing a seventh image thereof;

FIG. 8 is a front view of a display panel or portion thereof with a graphical user interface showing an eighth image thereof;

FIG. 9 is a front view of a display panel or portion thereof with a graphical user interface showing a ninth image thereof;

FIG. 10 is a front view of a display panel or portion thereof with a graphical user interface showing a tenth image thereof;

FIG. 11 is a front view of a display panel or portion thereof with a graphical user interface showing a eleventh image thereof; and,

FIG. 12 is a front view of a display panel or portion thereof with a graphical user interface showing a twelfth image thereof.

The subject matter of the present disclosure includes a process or period during which one computer graphical user interface component changes into another. In particular, the appearance of the image transitions between the images shown of the various designs described above. This process or period in which one computer graphical user interface component transitions into another computer graphical user interface component forms no part of the claimed design.

The broken lines depicting a display panel or portion thereof are included for the purpose of illustrating environmental structure and form no part of the claimed design. The broken lines depicting portions of a graphical user interface are included for illustrating environmental aspects of a display panel or portion thereof with a transitional graphical user interface and form no part of the claimed design.