Runaway number of pixels than the total number of full-screen pixel, which we call "the whole screen pixels out of control rate." Moreover, to avoid runaway pixels concentrated in a single area, we put forward the "region pixels runaway rate", which is in the region of 100 × 100 pixels, runaway total number of pixels with a pixel area (ie 10000) ratio. The index for "LED display general specification" SJ / T11141-2003 of "runaway pixels were discrete distribution" requirements were quantified, convenient and intuitive. (1) the ambient temperature varies greatly. When the full-color LED display work itself must have a certain amount of heat when the sun LED electronic display, if the ambient temperature is too high heat and bad Wufeng LED electronic display, integrated circuits may not work properly, or even destroyed, so that the display The system can not work properly; (2) a wide audience and LED electronic display, require far horizon, a wide field of view requirements, ambient light changes, in particular, may be exposed to direct sunlight; (3) screen installed outdoors, the sun and the rain often leaching, wind dust cover, which the harsh environment, the electronic device is wet or damp can cause serious short circuit or fire, causing malfunction or a fire, resulting in the loss; (4) the display may be subject to strong electric magnetic attacks caused by lightning . Yichang _LED electronic display LED electronic display _ 金锐光 electricity provided by the Science and Technology Co., Ltd. Yichang 金锐光. Yichang 金锐光 Technology Co., Ltd. (www.ycjrgd.com/) strong, credible, in Yichang, Hubei electronic, electrical and other industries cooperation projects accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinrui Guang electricity and you hand into the brilliant, for a better future!