FSTN (Film Compensated Super-Twisted Nematic) is an enhanced form of STN used in monochrome LCD displays, mainly in industrial, medical and mobile devices. Unlike basic STN, an FSTN panel includes an additional compensating film that corrects phase shifts of light, improving contrast and readability and producing a clear black-and-white image without the typical greenish or bluish tint. This technology also offers a wider viewing angle and better stability under changing temperatures.
Although FSTN is inferior in image quality to TFT, it remains a popular solution in simple graphic and text displays where low power consumption, environmental robustness and reliability are priorities.
