DFSTN (Double Film Super-Twisted Nematic)

DFSTN (Double Film Super-Twisted Nematic) is a type of LCD technology that is an advancement of standard STN. It uses two compensating films to improve optical performance. The use of a double phase compensator increases contrast, reduces unwanted color tints (e.g. yellow-green or blue-violet) and improves readability, especially in terms of black levels, white areas and character edges. DFSTN is used in portable devices, counters, clocks and HMI interfaces, especially where energy efficiency, small size and long battery life are important. It is an economical alternative to TFT panels in applications that do not require full-color or video.