> BTW, is it true that an LCD is matrix addressible? (i.e., all the pixels 
> can be changed exactly simultaneously.)

You can only change a line at a time.  You charge up all the "column" wires 
to what voltage you want, then power up the row line which opens all the 
transistors inside every sub-pixel on that row, hence they all the get the 
voltage you wanted.  You then turn off that row (and hence the transistors 
close) and the sub-pixels remember their voltages until you come round next 
frame.  You can only do this process one row at a time.

So yes, it's matrix addressable, but no you can't change all the pixels 
exactly at the same time.

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