Holding the display assembly with one hand and the upper case with the other, push them together slightly to move the hinges out of their recesses in the the upper case.

There are only a few millimeters of play between the hinges and the case, so you won't need to push far.

Push the upper case forward while pulling back gently on the display.

Once the two display hinges have cleared the upper case, remove the display and set it aside.