A Thin Film Transistor (TFT) is a type of field-effect transistor that is made by depositing thin layers of semiconductor material onto a substrate. This technology is commonly used in display screens, such as those found in LCD and OLED panels, where it helps control individual pixels for better image quality. TFTs are valued for their ability to provide high resolution and fast response times. The structure of a TFT typically includes a gate, source, and drain, similar to traditional transistors, but with the added benefit of being lightweight and flexible. This makes them suitable for various applications beyond displays, including in solar cells and sensors. Their compact design allows for integration into modern electronic devices.