With a suction handle you can lift the display a little bit to create a gap.

Insert just the tip of an opening pick in the gap and steadily slide it along the edge towards the top. You may need to go back and forth a few times.

Try to get around the corner and behind the top part of the display. Re-position the suction handle if needed.

Leave the opening pick behind the display to avoid the re-sealing of the adhesive.