Wow - That screen shot sure is Weird and does not look like any Display View window I've ever seen. It actually looks like the Standard View window/screen with a Detached Display Panel sitting on top of it.
Try this - select a view from the Tree that allows you to see the "Display Panel" at the bottom of the tree, if it is empty then right click in the empty panel and select the "Reattach Window/Panel" option.