SUPERTWISTED NEMATIC (STN) LIQUID CRYSTAL DISPLAYS

Passive matrix, supertwisted nematic (STN) displays are well established as small- and medium-sized matrix displays and are presently being used in half of the notebook-sized computers. STN screens are being considered as desk-top CRT monitor replacements because their simpler construction allows them to be manufactured in larger sizes and at lower cost than active matrix LCDs. This chapter describes the fundamental physics behind STN operation, reviews the many device and materials developments that have improved STN performance, and points out likely future trends.