F-STN (Film Super Twisted Nematic) is a display technology that is an improved version of the classic STN (Super Twisted Nematic) display. F-STN displays are known for their relatively low power consumption and lower manufacturing costs. While not as good as modern TFT LCDs in terms of color display, F-STN displays provide good contrast and are commonly used in lower cost graphics tablets. They are ideal for users who do not require a wide range of colours but are looking for an affordable solution for simple drawing and annotation.