How about TFT LCD?


  TFT (Thin Film Transistor) LCD.


  With its excellent performance, mass production, a high degree of automation, low cost of raw materials, and broad development space, TFT-LCD will rapidly become the mainstream product in the new century and a bright spot in the global economic growth in the 21st century.


  And TN technology is different, TFT display using "back-penetrating" irradiation - imaginary light source path is not like TN liquid crystal as from top to bottom, but from the bottom up. This approach is to set up a special light tube in the back of the liquid crystal, the light source when irradiated through the lower polarizer upward transmission. As the electrodes of the upper and lower sandwich layer are changed to FET electrodes and common electrodes when the FET electrode is turned on, the performance of the liquid crystal molecules will also change, which can be shaded and transmitted to achieve the purpose of display, and the response time is greatly improved to about 80ms. Because it has a higher contrast ratio and richer colors than TN-LCD, the screen update frequency is also faster, so TFT is commonly known as "true color".


  Compared to DSTN, TFT LCD's main feature is to configure a semiconductor switching device for each pixel. Since each pixel can be directly controlled through the dot pulse. Thus, each node is relatively independent and can be continuously controlled. This design method not only improves the response speed of the display but also can accurately control the display grayscale, which is the TFT color is more realistic than the DSTN reasons.



Main Advantages of TFT LCD


  With the maturity of TFT technology in the early nineties, color LCD flat panel display rapid development, less than 10 years, TFT LCD rapidly grew into the mainstream display, which has the advantages of it is inseparable. The main features are.


  (1) use characteristics: low-voltage applications, low driving voltage, solidified use of safety and reliability; flat, and thin, saving a lot of raw materials, and use of space. Low power consumption, its power consumption is about one-tenth of the CRT display, reflective TFT LCD even only about one percent of the CRT, saving a lot of energy. TFT LCD products and specifications, size series, variety, easy and flexible use, maintenance, update, easy to upgrade, long service life, and many other features. The display range covers all display applications from 1" to 40" as well as large projection surfaces, making it a full-size display terminal. The display quality ranges from the simplest monochrome character graphics to high resolution, high color fidelity, high brightness, high contrast, and high responsiveness of video displays of all sizes and models. Display methods include direct view, projection, see-through, and reflective.


  (2) Good environmental characteristics: no radiation, no flicker, no harm to the user's health. In particular, TFT LCD electronic books and magazines will bring mankind into the paperless office, paperless printing era, leading to human learning, dissemination and record planted civilization way of revolution.


  (3) wide range of applications, from -20 ℃ to +50 ℃ of the temperature range can be used normally, through the temperature hardening process of TFT LCD low temperature operating temperature can reach minus 80 ℃. Can be used as a mobile terminal display, desktop terminal display, and can be used for large-screen projection TV, which is an excellent performance of the full-size video display terminal.


  (4) manufacturing technology, a high degree of automation, large-scale industrial production characteristics of good. TFT LCD industry, mature technology, large-scale production of the yield rate of more than 90%.


  (5) TFT LCD easy integration and upgrading, is a perfect combination of large-scale semiconductor integrated circuit technology and light source technology, continue to develop great potential. At present there are amorphous, polycrystalline, and monocrystalline silicon TFT LCD, the future will have other materials of TFT, both glass substrate and a plastic substrate.

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How about TFT LCD