LCD (Liquid Crystal Display) may be a new noun for many users, but the technology may have a far greater history than we thought-as early as the late 19th century, Austrian botanists discovered liquid crystals, or liquids, This means that a substance has both liquid fluidity and some arrangement characteristics similar to that of a crystal. Under the action of electric field, the arrangement of liquid crystal molecules will change. Thus affecting its optical properties, this phenomenon is called electro-optical effect. Using the electro-optical effect of liquid crystals, British scientists made the first LCD monitor, the LCD, in the last century. Today's LCD display is widely used in fixed-line liquid crystal, if we microscopic to see it, we will find it special like cotton stick. Compared with traditional CRT, LCD is not only small size, thin thickness (the current 14.1 inch thickness can be only 5 cm), light weight, less energy consumption (1 to 10 micro-tile/square centimeter), low operating voltage (1.5 to 6V) and no radiation, no flicker and can directly match the CMOS integrated circuit.
Due to its many advantages, LCD has been entering desktop applications since 1998. The first operable LCD is based on dynamic scattering mode (Dynamics Scattering Mode,DSM), which was developed by the team George Heilman led by RCA company. Hailman founded Optet, a company that has developed a range of LCDS based on this technology. In the December 1970, the rotation of the liquid crystal to the column field effect was registered as a patent in Switzerland by Sian and Holfrich Hoffmann-Le Roche Central Laboratory. In the 1969, James Forguson at Kent State University in Ohio, USA, and registered the same patent in the United States in February 1971 for the rotational field effect of liquid crystals.
1971 his company (ILIXCO) produced the first LCD based on this feature, quickly replacing the less performing DSM LCD. It was only 1985 years later that the discovery produced commercial value, and in 1973 Japan's Polaroid company used it for the first time to produce digital displays of electronic calculators. LCD is now the main display device for laptops and handheld computers, and it also plays a very important role in projectors, and it is beginning to seep into the desktop display market.