lcd display functionality on iBook

[leon <svz@iprimus.com.au>]

Hi all, firstly am not sure if this is the right newsgroup, if not - 
please point to the one that is...

I would like to establish the exact way apple LCD displays work in iBook.

I am aware of the general theory of LCD functionality (e.g. use of 
polarised filters and applying voltage to crystal molecules to untwist 
them)... but... there are essentially two mode for LCD displays to work 
in (http://www.altadox.com/lcd/knowledge/lcd_display_modes.htm):

positive mode - this is where BLACK is achieved by fully turning the 
pixels ON (i.e. applying the voltage to them) which is kind of opposite 
to the way CRT monitors work

negative mode - the opposite of positive (i.e. WHITE is the result of 
fully tuning the pixel ON in terms of applying a voltage to it)...

i would like to know which mode is used by iBook G4 LCD display.

This is important for a number of reasons, one of which is the default 
"blackness" in some of the screensavers and autopower display managers.

Whilst displaying full black on CRT monitors actually provides power 
saving and "time off" for relevant pixels, in some LCD displays this may 
be actually driving corresponding pixels (i.e. the ones that display 
black) fully.

Kind regards,
Leon.