Unfortunately, this is as far as I got without damage.

At this point, the power input side of the circuit board is out of the case, but the tip side is still in, blocked by a few millimeters worth of case overhang.

It's very hard to see, but the circuit board is also being held by the the display's integral ribbon cable, which has been soldered directly to the bottom side of the circuit board.

If you want to continue, I think you'd have to remove the display's glass(?) panel from the case, which is almost certainly glued in.

It has been suggested that the glass panel's adhesive can be loosened with the application of heat. I have not tried this and do not know if this would aid in further disassembly. YMMV. Feel free to comment if you have more detail.

If you can get the glass out, I think that the actual display is just trapped between the glass and the case and should be able to be rotated up and slid through a slot in the case.

I gave up at this point, but, in trying to get the ground screw sleeve and one of the buttons back in place, I managed to snap the ribbon cable off of the display.