Changing contrast on LCD?

[dudo]

Hi.
I know how to change brightness (or backlight) on LCD (as someone wrote howto, using PWM). Is it possible to change contrast on e.g. 10" LCD?

Thanks.

[MBR]

Not in LCD itself and you can only decrease it by modifying RGB output LUTs. I'm not sure if Mali has them.

[dave-at-axon]

TFT's generally don't have contrast controls. Some computer monitors do but they have internal circuits to do this.

Your only control will be brightness of the backlight.