The u3014 monitor opens the same as most other recent Dell monitors.

First remove the stand.

Remove the bezel. This can be done by hand and a plastic knife. Approaching the screen from behind, peel the bezel with your fingers (photo).

The rest follows quite easily, but in the corners you might need to insert a blade or similar to pry open the clips.

When removing the bezel, be careful with the control panel (stuck in place with glue, covered with glued-on strip) and power-button (2 screws).