1.LED general knowLEDge :LED is shortening of Lighting Emitting Diode . LED display as a new pattern display of media developed on all over the world at 90 A D 20 century .its large display screen made up of LED dots module or pixels with various hi-tech technolog of micro-electronicsy ,optics ,computer and information process. LED display turn into the main leader product in field of large flat display as its high reliability ,long lifte time , strong environment applicability ,competitive price and low material cost feature . It is widely used in Stadium , Government squarement ,Vocal concert ,Station , Airfield and other public place with its more obviously capability advantage than Rear Projection Display ,PDP and LCD in Information display field . The field expert forecast that LED display (include fullcolor ,puppet clolor ,two basical color and single color ect )will be required all over the world rise to several billions USD within future years but more and more .Many international city such as New York ,Paris ,London and Tokyo all use fullcolor LED display widely as the new pattern carrier for information transmiting and advertisement publicing .In China , the requirement of LED display over 30% in domestic market with the quick economy development ,especially joined WTO and applied 2008 Olympics successfully , many Stadiums established and Government project rebuilded .So LED fullcolor display is the most important carrier for information transmiting in modern times and already is a sparkling symbol on the information world modern times .
2.the composition of LED display
It formed by PC ,Control System(sending card ,receiving card ), data line , display panel , power supplier ,frame ect .
3.the type of LED display
1.By environment : a: Indoor , b: outdoor
2.By color :
(1)By display color : single color (red ,green), basical two color ,three color
(2)By grey degree: 16 ,32,64,128,256 level
3 .By display performance
a .graphic display , b: PC video display ,c: TV video display ,d: market LED display ,d:communication display
4 .by lighting dot
a indoor ： Ф 3mm . . Ф 3.7mm . Ф 5mm . Ф 10mm （half outdoor ）
b outdoor ： P 12mm . P 14mm . P 16mm . P 18mm . P 20mm . P 22mm . P 25mm
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