Peel off black tape surrounding the cover. Careful around the 3 connector regions (notes below) Peel off foil tape at the 2 ends of cover. Remove 4x phillips screws.

LCD connector is very difficult. Its a flip latch connector with a handle tape just like the other end of cable. The handle tape covered under 2 differnet sticky tapes.

First peel off the black tape and carefully separate the LCD connector latch handle tape.

Next peel off the aluminum tape and latch handle tape is finally liberated.

Note iMac LCD (same model as TB Display) may seal this connector area differently from Thunderbolt Display LCD.