In 1923, Rosoff (Lossen.ow) in semiconductor research SIC impurities from time to time in light of the PN junction launch, to come up with a light-emitting diode (LED: Light Emitting Diode), has been ignored. With the rapid development of the electronics industry, in the age of 60, indicating the rapid development of technology, people come up with laser shows PDP plasma display panel, LCD liquid crystal displays, light emitting diode LED, electrochromic display ECD, show that EPID electrophoresis and other technologies . As the semiconductor production process and gradually mature and perfect, light-emitting diode displays have been growing in solid dominant. LED was widespread and rapid development of great importance because it has its own activities, a lot of advantages. For example: high-brightness, low voltage and power consumption in small, easy-to-integrated, easy-driven, long life, impact resistance and stable performance, its prospects for the development of extremely broad. At present, is moving higher brightness, higher weather-resistant and light-emitting density, uniformity of luminous, full color development.

In the early 1980s, along with the development of the computer, CGA shows that come out of the way, it has 320 * 200 resolution of the four colors in such a short span of 10 years has gone through a display CGA, EGA, SEGA, VGA, SVGA, To the development of ultra-high resolution, precision display from the development of the 320 * 200 * 1600 to 1250, from four 32-bit color to true color, scanning frequency from the development of 15.7K to 150K. The display works by receiving signals from the host reduced to light in the form of display, with the need to develop a large-screen devices, so with projectors, but its brightness can not be used under natural light, the emergence of LED displays (Screen), it Perspective has a large, bright, colorful character. LED display has a wide range of applications, in stadiums, large-screen display system can match the live game and the score, time, excellent playback, and so on; in the transportation sector, it can show that the road operation; in the financial industry, can display real-time financial Information, such as stocks, exchange rates, interest rates and so on; in the business of posts and telecommunications systems, to show that the majority of customers notice, news, advertising and so on. According to the survey, people accept the message, 2 / 3 of the information obtained through the eyes. Display technology is also used in industrial production, military, medical, aerospace and even the public security system, such as the cause of the national economy, social life and in the military field, and play an important role in display technology has become a modern human society is an essential life Technology.


Reference link: http://www.17led.com/LEDdisplay/2008-03/4.html