A few this years the demand of LED big screen jumps, cause the growth like all sorts of size factory emerge, instantly each say oneself is good, client difficult differentiate is very ugly, and it is with the price mostly oriented. But common saying says to buy the home to be inferior to selling the home seed, substantially shows Mai Jiaru He Jingming goes demand a low price, go asking to sell the home, return however hard astute sell the home too, let sold the home to take petty gain. The result was not bought just like the BMW of 500 thousand bought the nimble of 300 thousand to amount to however.

However, have the production firm of sincere letter as, should tell the important information inside the industry to buy the home beforehand, choose in order to offer them, do not do information asymmetry.

Big screen of LED full prize passes development of these a few years, thick look to already was mature industry it seems that, actually, no matter be the manufacturer of home or abroad, still be shoulder heavy responsibilities, especially outdoors big screen, majority product passes two years after moving, maintain very hard be in the expectation value of the user.

Why to meet such?

Here has a big error above all, major person thinks life of the main material LED of screen, IC all achieves 100 thousand hours, by 365 days / year, 24 hours / the day moves, service life has 11 years many, so major client cares only with famous LED and IC. Actually this different is requirement only, is not sufficient condition, plant because of red, green, La San of tube reasonable use, more important to displaying screen, to the tube of different color, should make its work in groove, good to indication screen will be more important. The reasonable adjustment of IC, also conduce to the unreasonable wiring problem that overcomes PCB. Was like a car to have good engine and circuit control, can not make a good car certainly. The crucial factor inside this is such:

Because LED, IC belongs to semiconductor device, they ask to nag to environmental use condition, best in room temperature 25 ℃ are controlled, its job mechanism is best. But in fact together outdoors big screen can apply below different temperature environment, summer may be in 60 ℃ above, be in possibly in the winter - 20 ℃ are the following. When manufacturer produces a product, should be it is test condition with 25 ℃ , classification of different product component archives, but the condition that the fact runs is 60 ℃ or - 20 ℃ , at this moment LED, IC work efficiency and expression are abhorrent, belong to first gear possibly so can become much archives, brightness is abhorrent, screen system becomes naturally also beautiful. Because be below different temperature condition,this is, red, green, La San is planted the brightness attenuation of the lamp and dropping is different, when 25 ℃ , its are normal evenly in vain, but when 60 ℃ , the brightness of the LED of 3 kinds of color drops somewhat, and its attenuation value is abhorrent, so brightness of meeting generation full screen drops and slant lubricious phenomenon, the quality of full screen can drop. And Where is IC? The working temperature limits of IC is to be in - 40 ℃ , 85 ℃ . Because external temperature is exorbitant and bring about the temperature inside casing to lift, if the temperature inside box exceeds 85 ℃ , because temperature is exorbitant,IC is met and bring about the job to be not stabilized, or Wen Piao differs and produce the electricity between the passageway or piece a difference is too big and bring about Hua Bing.
Previous12 Next