Answer:
Option a electronic switch used on FPDs
Explanation:
A thin film transistor (TFT) is an electronic switch which is commonly used in a liquid crystal display (LCD). TFT derives its name by the way how it is produced. It is produced by layering thin films of semiconductor. TFT is a type of transistor which is used to control state every individual pixel in a LCD. TCT can change the states of pixels (on and off) very quickly.
