Inverted Screen Mod
The Inverted Screen mod simply changes the color pallet of the display to an inverted state, causing what is known as an “invert”. There are 2 ways this can be achieved. The first way the invert can be done is by changing the polarization film during a backlight mod.
More info can be found on the backlighting page in this wiki. The second way can be done by using what is known as a Hex Inverter (74hc04 or similar), a logic IC that inverts its input signal.
Bibin’s tutorial can find can be found here.
When the 2 mods are done to a unit, it is safe to say that the unit has what’s known as a Biverted display.