With the early ninety's the maturity of TFT technology, color liquid crystal display rapid development, less than 10 years, TFT-LCD display rapid growth for the main display, and it has the advantage of not divided. The main features are:
One, wide range of application From - 20 degrees to + 50 degrees C temperature range can be used normally, after temperature reinforcement of TFT-LCD LCD screen low temperature working temperature can reach 80 DEG C below zero. Can be used as mobile terminal display, desktop terminal display, and can be used for large screen projection TV, is the excellent performance of full-size video display terminal.

Two, using the characteristics of a good Low display range from 1 inches to 40 inches within all display application scope as well as the projection plane, is a full size display terminal; displaying quality from the most simple monochrome graphics characters to high resolution, high color fidelity, high brightness, high contrast, high response speed and all kinds of specifications models of video display display mode; open type, projection, see-through, also with a reflection type. Application of pressure, low driving voltage, solid state safety and reliability; flat, and frivolous, saving a lot of raw materials and the use of space; low power consumption, the power dissipation of CRT display 1/10, reflecting type TFT-LCD even in only about one percent of CRT, and save a lot of energy; TFT-LCD liquid crystal screen products there are specifications, size series, species diversity, convenient and flexible use, easy repair, update, upgrade, long life and many other characteristics.
In three, manufacturing technology of high degree of automation
Large scale industrial production characteristics. TFT-LC D screen LCD technology is mature industry, mass production of finished product rate of more than 90%.
Four, environmental characteristics No radiation, no flicker, no harm to the health of users. Especially the TFT-LCD electronic books, will take the mankind into a paperless office, paperless printing times, cause of human learning, communication and records of civilization : revolution in the way of.
In five, TFT-LCD easy integration and upgrading
At present there are amorphous, polycrystalline and single crystal silicon liquid crystal display TFT-LCD, there will be other materials TFT, both glass and plastic substrates. Is a large scale semiconductor integrated circuit technology and lighting the perfect combination of technology, to continue the development potential is very great.
Development of fast, stable core technology The development of new materials, large-scale production equipment manufacturing, advanced production technology, will drive the upstream industry group. TFT-LCD module is the core of the information industry device, relates to the communication, transport, household appliances, computers, education, industry, medical, defense and other almost all fields. TFT-LCD industrialization ten years production line experienced 7 development, average 1 and a half years production line will be updated once. But the core technology of TFT-LCD is relatively stable. Drive the industry wide, to the national economy has global significance: the upstream raw materials, production equipment, production technology and relates to a modern industrial production of the dozens of field.
In large areas of glass or plastic substrate manufacturing control pixel ( LC or OLED ) performance of the switch TFT than in silicon manufacturing large-scale IC technology difficulty is greater. On the requirements of the production environment ( degree of purification for Grade 100 ), the purity of raw material requirements ( electronic special gas purity of 99.999985% ), the production equipment and production technology requirements are more than the semiconductor LSI, is a modern production of the top technology. The technical characteristics of TFT TFT technology is developed in the nineteen ninties, using new materials and new technology of large-scale semiconductor integrated circuit manufacturing technology, is a liquid crystal ( LC ), inorganic and organic thin film electroluminescent ( EL and OEL ) flat panel display base. TFT is in a glass or plastic substrate and a single chip ( also can be on a wafer ) by sputtering, chemical vapor deposition process for manufacturing circuit formed various kinds of essential membrane, the membrane processing and production of a large scale semiconductor integrated circuit ( LSIC ). Using a single crystal substrate which can greatly reduce the cost, is the traditional large scale integrated circuit to large area, multiple functions, low cost extending in the direction of. Its main features are:
One, powerful
Now people begin to drive IC integrated onto the glass substrate, the TFT function will be more powerful, it is traditional for a large scale semiconductor integrated circuit is incomparable. The earlier TFT as matrix selection circuit has improved liquid crystal light valve characteristics. For high resolution display, through the 0-6V range of voltage regulation ( typical values from 0.2 to 4V ), achieve the object element is precisely controlled, thus making LCD LCD screen to realize high quality and high resolution display possible. TFT-LCD is the history of mankind, the first in quality than the CRT display flat panel display.
In two, a large area of
At the beginning of the ninety's first generation of large area glass substrate ( 300mm * 400mm ) TFT-LCD LCD production line put into production, to 2000 first half of the year glass substrate in the area has been expanded to 680mm x 880mm ), which is expected to start in 09 years of Japanese SHARP investment in Osaka 10 generation line glass substrate size reaches 2880mmX3080mm, the size of the glass the panel can be cut 15 pieces of 42 inches of liquid crystal tv.
In three, a wide range of applications
Based on TFT technology of LCD flat panel display is the pillar industry in the information society, but also can be applied to the rapidly growing thin film transistors in organic electroluminescent ( TFT-OLED ) display panel also is in grow quickly.
Four, flexible technology
In addition to using the sputtering, CVD ( chemical vapor deposition ) MCVD ( molecular chemical vapor deposition ) and other traditional craft into film, laser annealing technique is also beginning to be used, can be made of amorphous films, polycrystalline film, also can produce single crystal film. Not only can make the silicon membrane, can also be produced by other II-VI and III-V semiconductor thin film.
In five, low cost
A glass substrate and a plastic substrate from the fundamental solution to the large scale semiconductor integrated circuit cost issue, as a large scale semiconductor integrated circuit applications to open up a broad application of space.
In six, a high degree of integration
Used in liquid crystal projection 1.3 inch TFT chip XGA resolution containing millions of pixels. SXGA resolution ( 1280 x 1024 ) 16.1 inch TFT array of amorphous silicon film thickness is only 50nm, and the TABONGLASS and SYSTEMONGLASS technology, the IC integration, equipment and supply technical requirements, technical difficulty is more than the traditional LSI.
A-SiTFT-LCD technology research
Resolution: A, TFT-LCD liquid crystal screen resolution in recent years by CGA ( 320 * 200), VGA ( 640 * 480), SVGA ( 800 * 600). XGA ( 1024 * 768) . SXGA ( 1280 * 1024) to the current development of the UXGA ( 1600 * 1200), QXGA ( 2560 * 2048) level.
In two, the United States of America contrast: P.P.Muhoray et al. Introduced the waveguide based LCD technology, and the use of this technology to achieve a 174 : 1 high contrast, and now TFT-LCD contrast can reach a maximum of 500 : 1.
Three, perspective: due to the liquid crystal material is anisotropic, its molecular arrangement orientation and under the action of the electric field to rearrange the obtained uniform effect of LCD devices from widening, which resulted in the LCD device in view of disadvantages, has put forward a variety of wide viewing angle technologies, like plane switching mode, relative to said microfluidic unit model, domain vertical pattern, angle can reach 170 degrees.
In four, recently launched a using elastic continuous polymer stabilized switching method, can make the response time is shortened to 10ms, using optical compensation with the response time is shortened to 2 ~ 3MS, has been using the technology developed in response time for the 8ms LCD color tv. Speed of response: when the frame rate of 60% frame period, about 16ms, using TN LCD LCD common TFT-LCD device response time may be less than 20ms.
Five, life: due to the development of manufacturing technology, TFT-LCD display service life can reach more than 30000 hours.
In six, a large screen and a reflection type are developed: 38in TFT-LCTV, the end of a large screen LC stitching times, reflecting type TFT-LCD color display also began to commercialization.
In seven, as a result of TFT production technology development, improve the performance of liquid crystal material, wide viewing angle technologies, response speed and the rate of finished products is improved, the TFT-LCD display performance has no less than CRT.
The information above is from Shenzhen LCM, LCD, LCD screen, LCD display module, backlight manufacturers -- Xingyuhe electronic collection