TFT, acronyms Thin Film Transistor (in English : Thin Film Transistor) is a special type of field-effect transistor which is fabricated by depositing thin films of semiconductor active and a layer of dielectric material and metal contacts on a base of support. A common substrate is glass . One of the first applications of TFTs are screen LCD.
The TFTs can be manufactured with a variety of semiconductor materials. The most common is silicon. The characteristics of silicon-based TFT depends on its crystalline state. That is, the semiconductor layer can be amorphous silicon, microcrystalline silicon or may have been tempered in a polysilicon. Other materials that can be used as semiconductors in TFTs are cadmium selenide (CdSe) and metal oxides such as zinc oxide. The TFTs can also be manufactured using organic materials (Organic TFT or OTFT).
Using semiconductors and transparent electrodes, such as Indium-Tin Oxide (ITO ) TF devices can be completely transparent.
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