The Cinema Display Control Panel is the first tool for Windows, that supports setting the backlight brightness of the TFT-Panel in Apple's displays directly in hardware.

The software was developed and tested on a Cinema Display HD, but does also work on 15", 17" and 22" models.

Please note, that the 20" model and all models of the new aluminium series are currently not supported.

If you are looking for a Linux derivate of this software, please take a look at acdcontrol written by Pavel Gurevich.