The yellow section is where video appears. It was one of the larger ones when it was installed about a decade ago. No real need to upgrade it at this point... I'd rather have them put that money towards an eventual second deck in the south island stands (where the scoreboard appears). I'd think they could just move it on top of that creation.
If you're really interested in the history, here's something:
HISTORY OF THE OHIO STATE SCOREBOARD STAFF