A super-twisted nematic display (STN) is a type of monochrome passive-matrix liquid crystal display (LCD). Standard twisted nematic (TN) LCDs with a 90 degrees twisted structure of the molecules have a contrast vs. voltage characteristic unsuitable for passive-matrix addressing as there is no distinct threshold voltage. STN displays, with the molecules twisted from 180 to 270 degrees, have superior characteristics.  The main advantage of STN LCDs is their more pronounced electro-optical threshold allowing for passive-matrix addressing with many more lines and columns.

Application: Automotive Instrument Cluster, Switch Gear, Industrial Machinery, Small Audio Devices.