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Views: 236 Author: Wendy Publish Time: 2023-08-18 Origin: Site
The term "liquid crystal" was coined by German physicist O. Lehmann in honor of an Austrian plant scientist named F. Reinitzer who studied the melting of plant organic matter in 1888. He discovered that when the temperature was raised to 145°C, the solid melted and presented a semi-molten flowing white turbid liquid, but that it did not form a clear homogeneous liquid until the temperature was continuously raised to 178°C. It is known as liquid crystal, and it is where liquid crystal display (LCD) technology first emerged.
Thin Film Transistor-Liquid Crystal Display is referred to by the term TFT LCD.
Microelectronics and liquid crystal display technology have been skillfully combined to create TFT LCD technology. People use the technology of microelectronic fine processing on Si, transplanted to the processing of TFT array on a large area of glass, and then the array substrate and another substrate with color filter film, the use of mature LCD technology, the formation of a liquid crystal box, and then after the process such as polarizer coating process, and finally formed a liquid crystal display (screen).
The TFT in TFT LCDs performs a switching tube-like function. A three-terminal device, the TFT is widely utilized. In most cases, the glass substrate is used to create the semiconductor layer, which is joined to the source and drain at both ends. And there is a gate that passes through the gate insulating sheet as opposed to the semiconductor. The gate voltage is used to regulate the current flowing between the source and drain electrodes.
The only display technology that can catch up to and surpass CRT in terms of brightness, contrast, power consumption, lifespan, volume, weight, etc. is liquid crystal flat panel display, particularly TFT-LCD. It will quickly become the standard product in the new century and represents a bright spot for global economic growth in the 21st century because to its superior performance, good mass production characteristics, high automation, low cost of raw materials, and large development space.
With the rapid growth of color LCD flat panel displays in less than 10 years and the maturation of TFT technology in the early 1990s, TFT LCD swiftly became the standard display, which is inseparable from the benefits it has. The primary attributes are.
Low-voltage applications, low driving voltage, better safety and reliability in solidification, flat panel that is small and light and saves a lot of space and raw resources. Low power consumption; it uses only a tenth as much electricity as a CRT display, reflecting TFT LCD, or even a CRT, which saves a significant amount of energy. Other features of TFT LCD products include specs, size series, a wide range of options, ease of use and flexibility, easy maintenance, update, and upgrade, extended service life, and many more. The display range is a full-size display terminal that covers the application range of all displays from 1 inch to 40 inches as well as the projection of huge planes. Display quality can range from the most basic monochrome character graphics to models of video displays with high resolution, high color accuracy, high brightness, high contrast, and high responsiveness. Direct view, projection, see-through, and reflection types of displays are all available.
No flickering, radiation, or harm to the user's health. The development of TFT LCD electronic books in particular will usher humanity into the paperless office and paperless printing era, bringing about a transformation in the way people learn, communicate, and remember to plant civilisation.
Normal operating temperatures for TFT LCD low temperature working temperature range from -20 °C to +70 °C, following temperature reinforced processing can exceed minus 80 °C. A full-size video display terminal with great performance can be utilized as a large-screen projection TV, a desktop terminal display, and a mobile terminal display.
The TFT LCD industry's technology is advanced; more than 90% of mass-produced finished goods were produced.
It has excellent development potential since it is the ideal fusion of large-scale semiconductor integrated circuit and light source technology. Amorphous, polycrystalline, and monocrystalline silicon TFT LCDs are already available. Other materials, including glass substrate and plastic substrate, will be used in TFT LCDs in the future.
The contemporary TFT-LCD has overtaken the CRT as the standard in the display area as a result of the LCD industry's ongoing expansion and development. The pull effect, radiation range, and other characteristics of the TFT-LCD, which is the foundation of the electronic information industry, simultaneously encourage the development of new tools, materials, system applications, intelligent software, and other areas. The TFT LCD makes the world vivid.
