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This article mainly introduces "what is lcd". In daily operation, I believe many people have doubts about what lcd is. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what is lcd?" Next, please follow the editor to study!

Lcd refers to the liquid crystal display screen, its English full name is Liquid Crystal Display, is a kind of flat screen display, used for television and computer screen display; liquid crystal solution in two polarized materials, so that the current through the liquid will rearrange the crystal to achieve the purpose of imaging.

Operating environment of this paper: Windows7 system, Dell G3.

What screen is lcd?

Lcd refers to liquid crystal display screen.

Liquid crystal display screen, abbreviated as LCD in English, is Liquid Crystal Display, which is a kind of flat panel display. Used for screen display of televisions and computers. The display screen has the advantages of low power consumption, small size and low radiation.

The liquid crystal display screen uses a liquid crystal solution in two polarized materials, so that when the current passes through the liquid, the crystal will be rearranged to achieve the purpose of imaging.

Brief introduction

Liquid crystal display (LCD) is a type of display used in digital clocks and many portable computers. LCD shows that two pieces of polarized material are used, and between them is a liquid crystal solution. As the current passes through the liquid, the crystals are rearranged so that light cannot pass through them. Therefore, each crystal is like a shutter, allowing light to pass through and blocking it. Liquid crystal display (LCD) at present, scientific and technological information products are developing towards the goal of light, thin, short and small, and the display products with a long history in the periphery of the computer are no exception. Under the premise that it is easy to carry and carry, the traditional display methods, such as CRT CRT display and LED display board, are subject to factors such as too large size or huge power consumption, which can not meet the actual needs of users. The development of liquid crystal display technology is in line with the current trend of information products, whether it is right-angle display, low power consumption, small size, or zero radiation and other advantages, users can enjoy the best visual environment.

Main classification

According to the driving mode, LCD can be divided into three types: static drive (Static), simple matrix driver (Simple Matrix) and active matrix driver (Active Matrix). Among them, the passive matrix can be divided into torsional nematic (Twisted Nematic;TN), overtwisted nematic (Super Twisted Nematic;STN) and other passive matrix driven liquid crystal displays, while the active matrix can be divided into thin film transistor (Thin Film Transistor;TFT) and two-terminal diode (Metal/Insulator/Metal;MIM).

TN, STN and TFT liquid crystal displays are different in viewing angle, color, contrast and animation display quality because of their different principle of liquid crystal molecular torsion, which makes them have obvious differences in the application range of products. In terms of the scope and level of application of liquid crystal display technology at present, active matrix driving technology takes thin film transistor (TFT) as the mainstream, and is mostly used in notebook computers and animation and image processing products. At present, the simple matrix drive technology is mainly twisted nematic (TN) and super twisted nematic (STN), and the current applications are mainly word processors and consumer products. Among them, the capital investment and technology demand for TFT LCD is higher, while the technology and capital demand for TN and STN is relatively low.

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