顯(xian)(xian)示(shi)屏的(de)(de)(de)亮度(du)(du)(du)：要(yao)在一(yi)個環(huan)境中正確的(de)(de)(de)顯(xian)(xian)示(shi)信息，要(yao)有(you)(you)足夠的(de)(de)(de)亮度(du)(du)(du)以(yi)(yi)(yi)圖像的(de)(de)(de)實際對比度(du)(du)(du)，尤其是用(yong)在戶外環(huan)境條件(jian)惡(e)劣的(de)(de)(de)戶外LED顯(xian)(xian)示(shi)屏。所以(yi)(yi)(yi)，根據使用(yong)環(huan)境的(de)(de)(de)不同顯(xian)(xian)示(shi)屏要(yao)有(you)(you)相應的(de)(de)(de)亮度(du)(du)(du)來。顯(xian)(xian)示(shi)屏投(tou)入(ru)使用(yong)后，做為發光源的(de)(de)(de)LED管的(de)(de)(de)亮度(du)(du)(du)就開始衰(shuai)減，所以(yi)(yi)(yi)亮度(du)(du)(du)衰(shuai)減的(de)(de)(de)速率是LED顯(xian)(xian)示(shi)屏的(de)(de)(de)重要(yao)性能之(zhi)一(yi)。
場(chang)(chang)(chang)(chang)掃描(miao)電(dian)(dian)(dian)路(lu)(lu)(lu)：包括場(chang)(chang)(chang)(chang)振蕩和(he)(he)場(chang)(chang)(chang)(chang)輸出兩部分。場(chang)(chang)(chang)(chang)振蕩電(dian)(dian)(dian)路(lu)(lu)(lu)在同步信號下，形(xing)成(cheng)場(chang)(chang)(chang)(chang)頻(pin)鋸(ju)齒波(bo)(bo)，鋸(ju)齒波(bo)(bo)再由場(chang)(chang)(chang)(chang)輸出電(dian)(dian)(dian)路(lu)(lu)(lu)功率放大后(hou)加(jia)至(zhi)場(chang)(chang)(chang)(chang)偏轉線圈，形(xing)成(cheng)掃描(miao)電(dian)(dian)(dian)流，使電(dian)(dian)(dian)子(zi)槍發射出的電(dian)(dian)(dian)子(zi)上下拉開。場(chang)(chang)(chang)(chang)幅和(he)(he)場(chang)(chang)(chang)(chang)中心調節(jie)的功能也(ye)是在場(chang)(chang)(chang)(chang)掃描(miao)電(dian)(dian)(dian)路(lu)(lu)(lu)中實現(xian)的，此外還輸出場(chang)(chang)(chang)(chang)頻(pin)鋸(ju)齒波(bo)(bo)到枕形(xing)校(xiao)正(zheng)電(dian)(dian)(dian)路(lu)(lu)(lu)，以校(xiao)正(zheng)水(shui)平(ping)枕形(xing)失真。
LCD顯(xian)示器(qi)(qi)(qi)即液晶(jing)(jing)顯(xian)示器(qi)(qi)(qi)。它的(de)(de)優點有(you)(you)(you)機身薄、占(zhan)地小(xiao)和(he)輻射小(xiao)。LCD顯(xian)示器(qi)(qi)(qi)內部有(you)(you)(you)很多液晶(jing)(jing)粒(li)子，它們有(you)(you)(you)規律地排列成一定的(de)(de)形狀，并(bing)且它們每一面(mian)的(de)(de)顏(yan)(yan)色都不(bu)(bu)同(tong)(tong)，分為紅色、綠色和(he)藍色。這三原(yuan)色能還原(yuan)成任意(yi)的(de)(de)其他顏(yan)(yan)色。當顯(xian)示器(qi)(qi)(qi)收到顯(xian)示數據時(shi)，會控制每個液晶(jing)(jing)粒(li)子轉動到不(bu)(bu)同(tong)(tong)顏(yan)(yan)色的(de)(de)面(mian)，從而組合成不(bu)(bu)同(tong)(tong)的(de)(de)顏(yan)(yan)色和(he)圖(tu)像。也因為這樣，LCD顯(xian)示器(qi)(qi)(qi)的(de)(de)缺(que)點有(you)(you)(you)色彩不(bu)(bu)夠艷和(he)可視角度(du)不(bu)(bu)大等(deng)。
LED顯(xian)(xian)示(shi)(shi)器(qi)集(ji)微電子(zi)技(ji)術、計算機技(ji)術、信(xin)息處理技(ji)術于一體，以(yi)其色彩鮮艷、動態范(fan)圍廣、亮度(du)高、壽命(ming)長(chang)、工作穩定可靠等優點(dian)，成為具(ju)優勢(shi)的新(xin)一代顯(xian)(xian)示(shi)(shi)設備(bei)。目前，LED顯(xian)(xian)示(shi)(shi)器(qi)已廣泛應用(yong)于大型廣場(chang)(chang)、體育場(chang)(chang)館、證券交易大廳等場(chang)(chang)所，可以(yi)滿足不同環(huan)境的需要。
一般濕度保(bao)持(chi)在30%-80%之(zhi)間，顯(xian)(xian)示(shi)(shi)器(qi)(qi)都能正常工作(zuo)，但一旦室內濕度高(gao)于80%后，顯(xian)(xian)示(shi)(shi)器(qi)(qi)內部就會產(chan)生(sheng)結(jie)露現象(xiang)。其(qi)內部的(de)電源變(bian)壓(ya)器(qi)(qi)和其(qi)他線圈(quan)受潮(chao)后也易(yi)產(chan)生(sheng)漏電，甚至有可能造成(cheng)連線短路；而(er)顯(xian)(xian)示(shi)(shi)器(qi)(qi)的(de)高(gao)壓(ya)部位(wei)則極易(yi)產(chan)生(sheng)放電現象(xiang)；機內元器(qi)(qi)件容易(yi)生(sheng)銹、腐蝕，嚴(yan)重(zhong)時(shi)(shi)會使電路板發生(sheng)短路。因此，LCD顯(xian)(xian)示(shi)(shi)器(qi)(qi)注(zhu)意防潮(chao)，長時(shi)(shi)間不用(yong)的(de)顯(xian)(xian)示(shi)(shi)器(qi)(qi)，可以(yi)定期通電工作(zuo)一段時(shi)(shi)間，讓顯(xian)(xian)示(shi)(shi)器(qi)(qi)工作(zuo)時(shi)(shi)產(chan)生(sheng)的(de)熱量將機內的(de)潮(chao)氣驅趕出(chu)去。
花(hua)屏(ping)(ping)通常(chang)是(shi)(shi)由于(yu)(yu)顯(xian)(xian)(xian)示(shi)(shi)器(qi)不支持主機送來的(de)顯(xian)(xian)(xian)示(shi)(shi)模式，往(wang)往(wang)是(shi)(shi)高于(yu)(yu)顯(xian)(xian)(xian)示(shi)(shi)器(qi)的(de)顯(xian)(xian)(xian)示(shi)(shi)模式，引起屏(ping)(ping)幕(mu)(mu)(mu)的(de)圖(tu)像混亂，無法看清楚屏(ping)(ping)幕(mu)(mu)(mu)上(shang)的(de)圖(tu)像和文字。如果(guo)是(shi)(shi)具有(you)模式自動識(shi)別的(de)顯(xian)(xian)(xian)示(shi)(shi)器(qi)，有(you)可(ke)能是(shi)(shi)黑屏(ping)(ping)狀態，但這(zhe)時(shi)面板下(xia)方(fang)指示(shi)(shi)燈為綠色。這(zhe)時(shi)重(zhong)新啟動即可(ke)恢復。如果(guo)這(zhe)種方(fang)法不行(xing)，可(ke)以(yi)在把顯(xian)(xian)(xian)卡(ka)驅動程(cheng)序(xu)刪除，然后在重(zhong)新安裝(zhuang)顯(xian)(xian)(xian)卡(ka)驅動即可(ke)。還有(you)在顯(xian)(xian)(xian)卡(ka)顯(xian)(xian)(xian)存發(fa)生故障時(shi)會(hui)出現屏(ping)(ping)幕(mu)(mu)(mu)上(shang)固定位(wei)置顯(xian)(xian)(xian)示(shi)(shi)混亂，而其他地方(fang)卻顯(xian)(xian)(xian)示(shi)(shi)正(zheng)常(chang)。也有(you)顯(xian)(xian)(xian)卡(ka)損(sun)壞造成花(hua)屏(ping)(ping)的(de)。
