FFSTN – Double Foil compensated Twisted Nematic

A variation of the Super Twisted Nematic Display providing better optical performance

Film-compensated displays that contain two extra layers of compensating film , in addition to the polarisers, to boost contrast and sharpness. There are potential stability issues when operating in the high end of the display’s operating temperature range causing contrast to deteriorate.

Because of this Double Super Twisted Nematic (DSTN) and Advanced Super Twisted Nematic (ASTN) displays were developed

DSTN-FSTN Principle