Contrast ratio in LCD-TFT display

[[email protected]]

Can i consider contrast ratio in LCD-TFT display, in approximated
analysis, independent from forward current of led-backlight? I think
yes, because it is the fraction of light that liquid crystal can
block...or not?
Thanks

 

[John Devereux]

Can i consider contrast ratio in LCD-TFT display, in approximated
analysis, independent from forward current of led-backlight? I think
yes, because it is the fraction of light that liquid crystal can
block...or not?

I would think so too.

More importantly, it is only valid for viewing in total darkness - since
the contrast ratio for TFTs is likely dominated by ambient light
reflection.

 

[[email protected]]

Another question: if i want to compare white luminance of two display
datasheet, due to different forward current used, how can i do it?I
should know responsivity to calculate it (i think), but how can i
obtain it?
thanks