LED the large displaying screen electron or the monitor is one of the most advanced demonstration media at present. The ultra big picture, the ultra strong vision establishes a new school. Compared with other demonstration media, it has the rich demonstration content, the broad dynamirange, the vivid picture, the simple safe and reliable, as well as no pollution, the long life and high brightness, the good effect and so on. Long life and low price made her to be the best one in the displaying medias LED displaying monitor is the high-tech product which is made by: the electronic technology, the micro electron technology, the computer technology, the information processing technology .It is used for demonstrating the writing and the computer screen synchronization graph, and widely used in the world. It is applied to financial securities, bank rate, commercial advertizing, cultural entertainment, and gained huge social efficiency and the rich economic efficiency. Rich color, diverse change in the displaying mode , high brightness, the long life made her to be the epoch-making product. The light emitter diode displaying monitor industry in our country emerges from the beginning of the 90's, in recent years unceasingly obtains the new breakthrough, and opens up the new application scope, the market development is rapid. In 2000 the total market sales is 300 million Yuan, in 2001 the LED displaying monitor market total sales are 600 million Yuan, in 2002 the market demand amount is 810 million Yuan; The Chinese marke. LED market demand amount amounts to 2.2 billion Yuan in 2005, among those the super bright LED is 25%, high bright LED is 35%, the ordinary brightness is 40%.