John,
Having just purchased an AOC LED monitor apart from it's unusable colour profile the other thing that struck me was a rather confusing label (below) stuck to the top outer edge of the screen;
The monitor was within a thin polystyrene type bag and all its plastic/brushed ally surfaces were covered by a thin clear plastic film, obvious for protection and easily removed.
Now just what was that label advising the person unpacking that monitor?
a) Remove the panel film
slowly rather than by
ripping that may cause damage.
or
b) Do not remove the film on the panel.
Neither the box, manual or anything within the blurb refers to a screen/panel film
As for the gradient banding I can cure it by removing my glasses
Grahame