For the blue LED, the voltage can vary between 4.5V ~ 5.5V without affecting the light output to cause any significant impact Honghu LED display production, or bring the pixel difference unpleasant. Basically, the voltage LED not be less than 4.0V, because the blue LED has a higher than conventional GaP technology uses color along breakover voltage; logic voltage can vary between 3V ~ 5.5V and will not affect the display of information or show strength, lower than 4.5V working will affect the timing and logic levels may result registers and control registers changes in dot matrix if less than 3V. Blu-ray smart display offers two ways to change the brightness, respectively, and the peak current control pixels using pulse width modulation, this function can be shown in a control word group 0 D0 to D5 bit to be set . Besides, is not recommended by the LED supply voltage pulse width modulation to control the brightness of the display. Runaway number of pixels than the total number of full-screen pixel, which we call "the whole screen pixels out of control rate." Also Xiaogan LED display production, in order to avoid runaway pixels concentrated in a single area of ??Suizhou LED display production, we propose the total number of pixels in the pixel region "region pixels runaway rate", which is in the region of 100 × 100 pixels, runaway ( 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. Wufeng LED display production _LED display production _ 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!