Display technology has become an indispensable modern technology

1923, Rousseff (Lossen.o.w) in the study of semiconductor SIC has launched light impurities in P-N junction, developed a light emitting diode (LED:Light Emitting Diode), has been neglected. With the rapid development of the electronics industry, in 60s, display technology has developed rapidly, people have developed PDP laser display plasma display panel, liquid crystal display, LCD light emitting diode LED, electrochromic display, ECD electrophoresis showed that the EPID and other technologies. As the semiconductor manufacturing and processing technology gradually mature and perfect, light-emitting diode has become the dominant position in the solid state display. The reason why LED has been widely valued and developed rapidly is because it has many advantages. For example: high brightness, low operating voltage, low power consumption, easy to integrate, easy to drive, long life, impact resistance and stable performance, its development prospects are very broad. At present, it is developing towards higher brightness, higher weather resistance and luminous density, luminous uniformity and full color. In early 80s, with the development of computer, CGA display mode appeared, it has 320*200 resolution of four color display mode has experienced CGA, EGA, SEGA, VGA, SVGA in the short 10 years, to the development of ultra high resolution the display precision from 320*200 to 1600*1250, four colors to 32 bit color, scanning frequency from 15.7K to 150K. The operating principle of the monitor signal received from the host is reduced to the form of light is displayed, along with the development of people needs a big screen of the device, and a projector, but its brightness can not be used in natural light, so there is a LED display (screen), it has the characteristics of large angle, high brightness, color gorgeous. The application of LED display has been very extensive in stadiums, large screen display system can live games and game score, time, replay etc.; in the transportation industry, can display the road operation; in the financial industry, and can display real-time financial information, such as stock, exchange rate and interest rate; in the commercial telecommunications system. You can display a notification message, advertising and so on to customers. According to the survey, the information received by the 2/3 information is obtained through the eyes. Display technology is used in industry, military, medical units, public security system and the aerospace industry in the national economy, social life and the military field, and plays an important role in display technology has become an indispensable technology in modern society.