LCD Backlights : STN and FSTN

STN Backlights

Super Twisted Nematic (STN) LCDs have a blueish tint to their pixels. This is something to keep in mind when choosing a backlight option for STN type LCDs because of how the contrast is affected with the backlight both off and on.

STN-Positive (+) Gray : 

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STN-Positive (+) Yellow/Green :

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STN-Negative (-) Blue :

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FSTN Backlights

Film Compensated Super Twisted Nematic (FSTN) LCDs can achieve higher contrast with a darker black shade in their pixels. This still should be considered when selecting a backlight option and whether usage for both off and on status will be needed in the application.

FSTN-Positive (+) :

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FSTN-Negative (-) :