Main technical parameter for P20 full color display number technology item technical parameter 1 display mode: full color lattice, well radiation coherence, no mosaic phenomena 2 pixel composition: Adopt high luminance LED wavelength as follow: G(pure green) 520±5(nm) B(pure blue) 470±5(nm) R(red) 625±5(nm) 3 pixel rules and density: pixel spacing:20mm,density:2500/ m² 4 effective display area: full color:1.23m² 5 module dimension: 1280mm×960mm 6 viewing angle: horizontal 160°,vertical 100° no distortion 7 Driving Mode: constant current 8 video grayness grade: each 256 grayness grade for red, pure green,pure blue 9 display color: red, green and blue form 256×256×256=16777216 color. Have the technology of revising the asymmetry caused by LED disperse. 10 maximal luminance the: maximal luminance of the display screen is ≥5800cd/m² , insure the words visible outdoor, the color of screen and the screen brightness are symmetrical 11 exchange frame speed: refresh frame frequency:≥200HZ, the full screen doesn't glitter. exchange frame speed: ≥60/second 12 brightness adjustment: Adjustable for both software and hardware 13 Chinese characters showing: Each panel can show 12 lines Chinese characters,16 words for each line. Size of Chinese character:320mm×320mm 14 the best viewing distance: 5m-500m