顯(xian)(xian)(xian)示(shi)屏的亮(liang)(liang)度(du)(du)：要(yao)在一個環(huan)境中正(zheng)確的顯(xian)(xian)(xian)示(shi)信(xin)息，要(yao)有足夠的亮(liang)(liang)度(du)(du)以(yi)圖像(xiang)的實(shi)際對比度(du)(du)，尤其是(shi)用在戶(hu)外(wai)環(huan)境條件惡劣的戶(hu)外(wai)LED顯(xian)(xian)(xian)示(shi)屏。所以(yi)，根據使(shi)用環(huan)境的不(bu)同顯(xian)(xian)(xian)示(shi)屏要(yao)有相(xiang)應的亮(liang)(liang)度(du)(du)來。顯(xian)(xian)(xian)示(shi)屏投入(ru)使(shi)用后，做(zuo)為發(fa)光(guang)源的LED管的亮(liang)(liang)度(du)(du)就(jiu)開始衰(shuai)減，所以(yi)亮(liang)(liang)度(du)(du)衰(shuai)減的速(su)率是(shi)LED顯(xian)(xian)(xian)示(shi)屏的重要(yao)性能之一。
場(chang)(chang)(chang)掃描(miao)電(dian)(dian)路(lu)：包括場(chang)(chang)(chang)振蕩和(he)(he)場(chang)(chang)(chang)輸出(chu)兩部(bu)分。場(chang)(chang)(chang)振蕩電(dian)(dian)路(lu)在(zai)同步信(xin)號下，形(xing)成場(chang)(chang)(chang)頻鋸齒波(bo)(bo)(bo)，鋸齒波(bo)(bo)(bo)再由(you)場(chang)(chang)(chang)輸出(chu)電(dian)(dian)路(lu)功率放大后(hou)加至(zhi)場(chang)(chang)(chang)偏轉線(xian)圈，形(xing)成掃描(miao)電(dian)(dian)流(liu)，使電(dian)(dian)子槍發射出(chu)的電(dian)(dian)子上下拉開。場(chang)(chang)(chang)幅和(he)(he)場(chang)(chang)(chang)中(zhong)心調(diao)節的功能(neng)也是在(zai)場(chang)(chang)(chang)掃描(miao)電(dian)(dian)路(lu)中(zhong)實現的，此外還輸出(chu)場(chang)(chang)(chang)頻鋸齒波(bo)(bo)(bo)到枕形(xing)校正(zheng)電(dian)(dian)路(lu)，以校正(zheng)水(shui)平枕形(xing)失真(zhen)。
LCD顯(xian)(xian)(xian)示(shi)(shi)器即液晶(jing)顯(xian)(xian)(xian)示(shi)(shi)器。它(ta)的(de)優點有(you)機身薄、占地(di)小(xiao)和(he)輻射(she)小(xiao)。LCD顯(xian)(xian)(xian)示(shi)(shi)器內(nei)部(bu)有(you)很多液晶(jing)粒子(zi)，它(ta)們有(you)規(gui)律地(di)排列成一定的(de)形狀，并且它(ta)們每(mei)(mei)一面的(de)顏(yan)色都不同(tong)，分為紅(hong)色、綠色和(he)藍色。這三原(yuan)色能還原(yuan)成任(ren)意的(de)其他顏(yan)色。當顯(xian)(xian)(xian)示(shi)(shi)器收到顯(xian)(xian)(xian)示(shi)(shi)數據時，會控制每(mei)(mei)個液晶(jing)粒子(zi)轉動到不同(tong)顏(yan)色的(de)面，從而組(zu)合成不同(tong)的(de)顏(yan)色和(he)圖像。也因為這樣，LCD顯(xian)(xian)(xian)示(shi)(shi)器的(de)缺點有(you)色彩不夠艷和(he)可視角度不大(da)等。
LED顯示器集微電子技(ji)(ji)術(shu)、計算機技(ji)(ji)術(shu)、信息處理(li)技(ji)(ji)術(shu)于(yu)一(yi)體，以(yi)其色彩(cai)鮮艷、動態范圍廣、亮度高、壽(shou)命(ming)長、工作穩定可(ke)靠等優點，成為具優勢(shi)的新一(yi)代顯示設備。目(mu)前(qian)，LED顯示器已廣泛應用于(yu)大型(xing)廣場(chang)(chang)、體育場(chang)(chang)館、證券交易(yi)大廳等場(chang)(chang)所，可(ke)以(yi)滿足不同環境的需要。
一(yi)般濕(shi)度保持在30%-80%之間(jian)(jian)，顯(xian)(xian)示(shi)器(qi)(qi)(qi)都能正常工作(zuo)，但(dan)一(yi)旦室內濕(shi)度高于80%后(hou)，顯(xian)(xian)示(shi)器(qi)(qi)(qi)內部就會產(chan)(chan)生(sheng)結(jie)露現象。其內部的電(dian)(dian)(dian)源變壓(ya)器(qi)(qi)(qi)和其他線圈(quan)受潮(chao)后(hou)也易產(chan)(chan)生(sheng)漏電(dian)(dian)(dian)，甚至有(you)可能造成連線短路；而(er)顯(xian)(xian)示(shi)器(qi)(qi)(qi)的高壓(ya)部位則(ze)極(ji)易產(chan)(chan)生(sheng)放電(dian)(dian)(dian)現象；機(ji)內元(yuan)器(qi)(qi)(qi)件容易生(sheng)銹、腐蝕，嚴重(zhong)時會使電(dian)(dian)(dian)路板發生(sheng)短路。因此(ci)，LCD顯(xian)(xian)示(shi)器(qi)(qi)(qi)注意防(fang)潮(chao)，長時間(jian)(jian)不用的顯(xian)(xian)示(shi)器(qi)(qi)(qi)，可以定期(qi)通(tong)電(dian)(dian)(dian)工作(zuo)一(yi)段時間(jian)(jian)，讓(rang)顯(xian)(xian)示(shi)器(qi)(qi)(qi)工作(zuo)時產(chan)(chan)生(sheng)的熱量將機(ji)內的潮(chao)氣(qi)驅趕出去。
花屏(ping)通常是(shi)由于顯(xian)(xian)示器不支持主(zhu)機送來的(de)顯(xian)(xian)示模式，往(wang)往(wang)是(shi)高(gao)于顯(xian)(xian)示器的(de)顯(xian)(xian)示模式，引起屏(ping)幕的(de)圖像混亂，無(wu)法看(kan)清楚屏(ping)幕上(shang)的(de)圖像和文(wen)字。如果(guo)(guo)是(shi)具(ju)有模式自動(dong)(dong)識(shi)別(bie)的(de)顯(xian)(xian)示器，有可(ke)能是(shi)黑屏(ping)狀態，但這(zhe)時(shi)面(mian)板下(xia)方指示燈(deng)為綠色。這(zhe)時(shi)重新啟動(dong)(dong)即(ji)可(ke)恢(hui)復。如果(guo)(guo)這(zhe)種方法不行，可(ke)以在(zai)把顯(xian)(xian)卡(ka)驅(qu)動(dong)(dong)程序刪除，然(ran)后在(zai)重新安裝顯(xian)(xian)卡(ka)驅(qu)動(dong)(dong)即(ji)可(ke)。還有在(zai)顯(xian)(xian)卡(ka)顯(xian)(xian)存發生故障(zhang)時(shi)會出(chu)現屏(ping)幕上(shang)固定位置顯(xian)(xian)示混亂，而其他(ta)地方卻顯(xian)(xian)示正常。也有顯(xian)(xian)卡(ka)損(sun)壞造(zao)成花屏(ping)的(de)。
