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with the maturity of tft technology in the early 1990s, color lcd flat panel displays have developed rapidly. in less than 10 years, tft-lcd has rapidly grown into a mainstream display, which has its advantages and is inseparable. the main features are:

(1) good use characteristics: low voltage application, low driving voltage, solidification safety and reliability improvement; flat, thin and light, saving a lot of raw materials and space; low power consumption, its power consumption is about crt display one-tenth, reflective tft-lcd even saves about one percent of crt, saving a lot of energy; tft-lcd products are also available in specifications, sizes, and varieties, and are easy to use, flexible, and repairable. , easy to upgrade, long service life and many other characteristics. the display range covers all display ranges from 1" to 40" and the projection large flat surface is a full-size display terminal; display quality from the simplest monochrome character graphics to high resolution, high color fidelity, high brightness, high contrast, high response speed of various specifications of video display; display mode is direct view, projection type, perspective type, also reflective.

(2) good environmental protection characteristics: no radiation, no flicker, no damage to the user's health. in particular, the emergence of tft-lcd e-books will bring humanity into the era of paperless office and paperless printing, which will lead to a revolution in the way humans learn, spread and remember to cultivate civilization.

(3) wide application range, from -20 ° c to +50 ° c temperature range can be used normally, the temperature-hardened tft-lcd low temperature working temperature can reach minus 80 ° c. it can be used as a mobile terminal display, a desktop terminal display, or a large-screen projection tv. it is a full-size video display terminal with excellent performance.

(4) the degree of automation of manufacturing technology is high, and large-scale industrial production characteristics are good. the tft-lcd industry is mature in technology, and the yield of large-scale production has reached 90% or more.

(5) tft-lcd is easy to integrate and update, and it is a perfect combination of large-scale semiconductor integrated circuit technology and light source technology, and has great potential for further development. at present, there are amorphous, polycrystalline and single crystal silicon tft-lcds, and there will be tfts of other materials in the future, both glass substrates and plastic substrates.