Originally posted by JensE It actually does look like a retaining clip for an assembly which includes both the overlay display and the focusing screen, placed into some black frame. You can clearly make out a clear glass at the bottom and, when you turn on the camera, the displayed elements in front of the focusing screen on the top side of that glass. It looks like a serviceable part as a unit to me, but definitely nothing I would just try and release.
So go ahead and release the "clip" and settle the issue once in for all. Just don't hold me responsible for any damage. I'm not the one that said it was the retaining clip
So which Nikons have LCD overlays? Are the screen interchangeable on those?
By the way you can get somewhat of an idea of the relationship of the pentaprism, LCD and focus screen from the cutaway model picture.