A vertical surface on which information can be displayed to public view(noun)
WordNet. Princeton University. 2010.
Use "display panel" in a sentence
"Julie also told the group she would create a display panel of photographs from Aloysius’s childhood to show the judge that he was once a vulnerable little boy just like other little boys."
"The lights on the answering machine glowed; the display panel on the fax broadcast the word "standby.""