Compared with the traditional LED display, Liaoning led full color, fine pitch LED prominent feature is a smaller dot pitch. In practice, the smaller the dot pitch, the higher the pixel density, suitable viewing distance is more recent, on the contrary, is suitable farther viewing distance. Small pitch LED screen in order to achieve the best visual effects Liaoning led full color, has the best line of sight, the user can perform simple calculations, there is an established formula that best viewing distance = spacing /0.3~0.8 . The smaller the dot pitch, the cost of a small pitch LED display full color led Liaoning higher, so the actual purchase, users should consider their own cost, demand, application and other factors. Angle Angle emitting arc tube arc tube means to decrease the luminance observation direction normal to the direction of the LED display luminance one-half, two observation directions and the normal direction of the plane formed by the same angle. Divided into horizontal and vertical viewing. Horizontal viewing angle SMD vertical viewing angle horizontal viewing angle elliptical oval patch of light-emitting tubes emitting tube arc tube arc tube vertical viewing angle led electronic screen | Liaoning led | Gao Jin photoelectric provided by Jinan Optoelectronics Technology Co., Ltd. Gao Jin. Jinan Gao Jin Optoelectronics Technology Co., Ltd. (www.gjlled.cn) strong, credible, in Jinan, Shandong liquid crystal device industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Gao Jin photoelectric and you hand into the brilliant, for a better future!