Electronic screen software called LED display. LED display (LEDdisplay) is a flat panel display, composed of a small panel of LED modules, used to display text, images, video and other kinds of information equipment. LED electronic display set of microelectronics technology, computer technology, information processing in one, with bright colors, LED electronic display integrates microelectronics technology, computer technology, information processing, has the advantages of bright color, wide dynamic range, high brightness, long life, stable and reliable work, etc. LED display is widely used in commercial media, cultural performance market, sports venues, information dissemination, news release, securities trading, etc., which can meet the needs of different environments. Liquid crystal display, abbreviated as LCD full name is LiquidCrystalDisplay, is a kind of flat panel display. Used for television and computer screen display. The advantages of this display are low power consumption, small size, low radiation. Liquid crystal display uses two pieces of polarized material in the liquid crystal solution, so that the current through the liquid will make the crystal rearrangement to achieve the purpose of imaging.