| STN is type of LCD that uses less power and is less costly than TFT technology.STN achieves highly multiplex displays by "twisting" the orientation of the light passing through the LCD to impact contrast and coloration. Currently, most STN displays are made with a twist between 180 and 270 degrees. The higher twist angles cause steeper threshold curves which put the on and off voltages closer together. The steeper thresholds allow multiplex rates greater than 32 to be achieved.
STN technology comes in two colorations, green STN and silver STN. The STN-green has dark violet/black characters on a green background. The STN-silver has dark blue / black characters on a silver background. It has very good visual quality and is cost competitive.
MSTNs in phones usually have both a backlight and a reflective backing, allowing them to be equally usable in both bright light and complete darkness. MSTNs are also a very low cost technology.CSTNs ¡V an STN that uses a white backlight and a color filter of red, green and blue to produce the hues required for a color display ¡V come in many types and TPO's products are noted for their fast switching and wide color range. Through Philips MDS, TPO has been an important developer and manufacturer of STN LCDs, and has one of the largest capabilities worldwide. With today's emphasis on full color displays in mobile applications, TPO offers a full portfolio of leading-edge Color STN products.
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