LCD may not be a new term for many users, but the history of this technology may be far beyond our imagination. As early as the end of 19, Austrian botanists discovered liquid crystal, that is, a substance has both liquid fluidity and some crystal-like arrangement characteristics. Under the action of electric field, the arrangement of liquid crystal molecules will change, thus affecting its optical properties. This phenomenon is called electro-optic effect. Using the electro-optical effect of liquid crystal, British scientists made the first liquid crystal display in the last century. Linear liquid crystals are widely used in today's liquid crystal displays. If we look at it with a microscope, we will find it is like a cotton swab. Compared with the traditional CRT, LCD is not only small in size, thin in thickness (14. 1 inch can be only 5cm), light in weight, low in energy consumption (1 to 10 microwatt /CMOS) and low in working voltage (1.5 to 6V).
Because of its many advantages, LCD has entered the field of desktop application since 1998. The first operational LCD was based on Dynamic Scattering Mode (DSM), which was developed by a team led by George Hailmann of RCA Company. Hailmann founded Optel Company, which developed a series of liquid crystal displays based on this technology. 1970 12, the rotational nematic field effect of liquid crystal is registered as a patent by Santer and Hoffman-lerouke Central Laboratory in Herfrich, Switzerland. 1969, James Ferguson discovered the rotating nematic field effect of liquid crystal in Ohio University, and registered the same patent in the United States in February of 197 1.