TFD (Thin Film Diode) - definition
If any diode is produced by following thin-film technology then it is called as thin film diode or TFD. It is used in LCD display technology and provides excellent image quality. Pixels is being portrayed using this kind of diode by turning on and off. Due to higher cost of TFT technology and higher power consumption EPSON introduced TFD technology which also belongs to active matrix display category. But in terms of color and brightness it is still inferior to TFT LCD.