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Below we will introduce the various characteristics of TFT LCD screen in detail:

(1) Large-scale: the first generation of large-scale glass substrate (3000mmx400mm) TFT in the early 1990s, the glass substrate area expanded to 6800mmx880mm in the first half of 2000, and the 950mmx1200mm glass substrate has also been put into operation recently.

(2) High integration: The resolution of the LCD projection 1.3-inch TFT display chip is XGA, which contains millions of pixels. The resolution is . The film thickness of the 16.1-inch TFT amorphous silicon of SXGA (1280x1024) is only 50 nanometers. The technical integration of TABONGLAS and SYSTEMONGLASS, the technical requirements for equipment and supply, and the technical difficulty are higher than those of traditional LSI.

(3) Complete functions: TFT liquid crystal display was originally used as a matrix address selection circuit, which improved the characteristics of liquid crystal light valve. For high-resolution displays, the LCD screen can achieve high-quality, high-resolution display by adjusting the voltage in the 0-6 display V range (its typical value is 0.2~4V) and correctly controlling the target element.

(4) Low cost: Glass substrates and plastic substrates fundamentally solve the cost problem of large-scale semiconductor integrated circuits and open up a broad application space for the application of large-scale semiconductor integrated circuits.

(5) Process flexibility: In addition to sputtering, laser annealing technology, CVD (chemical vapor deposition) MCVD can choose amorphous film, multi-product film and single-product film in addition to traditional film formation such as molecular chemical vapor deposition. Not only can do silicon film, but also do other things. I-VI and tetra-V semiconductor films.

In general application fields, the LCD liquid crystal display screen based on TFT technology is the pillar industry of the information society, and can also be used for the rapid development of thin film transistors. (TFT-OLED) flat panel display.