LED is glow diode (LightEmittingDiode) abbreviation, it is the application in photoelectricity domain very extensive glow shows
With material, choose different material to be able to happen below certain condition red, green, yellow, blue wait for color, LED has following characteristic, make its
Make the first selection material that makes big screen:
◆ brightness is tall, the brightness of outdoors sheet lamp is at present adjacent already 6, 000mcd;
◆ power comsumption is low, have taller photoelectricity to change efficiency;
◆ life is long, LED life is as long as 200, 000 hours of above;
◆ answers speed fast, ns class, without more than ash;
Drive of electric current of depress of ◆ low report, easily with computer interface.
1. 2LED shows the characteristic of screen
Show with other big screen screen appearance is compared, LED shows screen basically has following characteristic:
◆ screen dimension but can small, can accomplish 500m2 greatly most.
◆ perspective is big, indoor screen perspective is more than ± 80 degrees, perspective of the screen outdoor is more than ± 60 degrees.
The product that ◆ apparent distance can spur through choosing different diameter and differentia will adjust, small go to a few centimeters, go to hundreds of meters greatly all but full
Sufficient demand, at present the smallest like element diameter can make 1.9mm.
◆ configuration is agile, show simply to the number, complex the product that inspects screen to have different sort to complete color can satisfy a requirement, room
There is corresponding product outside ben.
◆ is easy with computer interface, supportive software is rich.
Current, other big screen monitor basically have following a few kinds, its function each has his strong point. Defect of screen type advantage
Power comsumption of magnetism platform trap door is low answer speed slow, show video impossibly, fault rate is high
TV wall complete color has disjunctive line, brightness is low, unwell at showing a character, cannot be outdoor use
Umbriferous complete color, the picture is exquisite brightness is low, cannot be outdoor use, definition is poor (the picture gets light not divide evenly)
Cost of CRT complete color is high, power comsumption is big, area cannot too big
PDP complete color, the picture is exquisite cost is high, the perspective is little, area cannot too big