What is a thin film transistor? The basic structure, characteristics, working principle, control module, application, installation steps, and development history of thin film transistors 4

7、 Development History

The development of thin-film transistors can be traced back to the early 1960s. At that time, researchers began to attempt using amorphous silicon (a-Si) materials to prepare transistors. Amorphous silicon materials have high electron mobility and stability, and are considered ideal materials for preparing thin film transistors.

In the early 1970s, researchers successfully developed the first prototype of a liquid crystal display using amorphous silicon thin-film transistors. However, due to the low electron mobility of amorphous silicon materials, the response speed of thin film transistors is slow and the image quality is not ideal.

In order to improve the performance of thin film transistors, researchers have begun to search for other materials. In the early 1980s, they discovered that polycrystalline silicon (p-Si) material had higher electron mobility and could be used to prepare high-performance thin-film transistors. The response speed of polycrystalline silicon thin-film transistors is several orders of magnitude higher than that of amorphous silicon, resulting in a significant improvement in the image quality of liquid crystal displays.

With the development of technology, researchers have also proposed other types of thin film transistors, such as Metal Oxide Semiconductor (MOS) thin film transistors, organic thin film transistors, etc. These new thin film transistor materials have advantages such as higher electron mobility, lower power consumption, and better stability, further promoting the development of liquid crystal displays and OLED displays. In the future, the development direction of thin film transistors will mainly focus on improving integration, reducing power consumption, and enhancing response speed.transistors