顯(xian)示屏的(de)(de)(de)(de)(de)(de)亮(liang)(liang)度：要在一個環(huan)境中(zhong)正(zheng)確的(de)(de)(de)(de)(de)(de)顯(xian)示信息(xi)，要有足夠的(de)(de)(de)(de)(de)(de)亮(liang)(liang)度以圖(tu)像(xiang)的(de)(de)(de)(de)(de)(de)實際對比度，尤其是用(yong)在戶外(wai)環(huan)境條件(jian)惡(e)劣(lie)的(de)(de)(de)(de)(de)(de)戶外(wai)LED顯(xian)示屏。所以，根據使用(yong)環(huan)境的(de)(de)(de)(de)(de)(de)不同顯(xian)示屏要有相應(ying)的(de)(de)(de)(de)(de)(de)亮(liang)(liang)度來。顯(xian)示屏投(tou)入使用(yong)后(hou)，做為發光源的(de)(de)(de)(de)(de)(de)LED管(guan)的(de)(de)(de)(de)(de)(de)亮(liang)(liang)度就開始衰減，所以亮(liang)(liang)度衰減的(de)(de)(de)(de)(de)(de)速(su)率是LED顯(xian)示屏的(de)(de)(de)(de)(de)(de)重要性(xing)能之一。
場(chang)(chang)掃描電(dian)(dian)(dian)(dian)路：包括場(chang)(chang)振(zhen)(zhen)蕩和(he)場(chang)(chang)輸(shu)出(chu)兩部分。場(chang)(chang)振(zhen)(zhen)蕩電(dian)(dian)(dian)(dian)路在(zai)同步(bu)信號下，形(xing)成場(chang)(chang)頻鋸(ju)齒波，鋸(ju)齒波再由場(chang)(chang)輸(shu)出(chu)電(dian)(dian)(dian)(dian)路功(gong)率放大后(hou)加至(zhi)場(chang)(chang)偏轉線(xian)圈，形(xing)成掃描電(dian)(dian)(dian)(dian)流，使電(dian)(dian)(dian)(dian)子槍(qiang)發(fa)射出(chu)的電(dian)(dian)(dian)(dian)子上下拉開(kai)。場(chang)(chang)幅和(he)場(chang)(chang)中(zhong)心調(diao)節的功(gong)能也是在(zai)場(chang)(chang)掃描電(dian)(dian)(dian)(dian)路中(zhong)實現的，此外還輸(shu)出(chu)場(chang)(chang)頻鋸(ju)齒波到枕形(xing)校正電(dian)(dian)(dian)(dian)路，以校正水平枕形(xing)失(shi)真。
LCD顯(xian)示(shi)器(qi)即(ji)液(ye)晶顯(xian)示(shi)器(qi)。它(ta)的優點(dian)有(you)機身薄(bo)、占(zhan)地小和輻(fu)射小。LCD顯(xian)示(shi)器(qi)內(nei)部有(you)很多液(ye)晶粒子，它(ta)們(men)有(you)規律(lv)地排列成(cheng)一定(ding)的形狀，并且(qie)它(ta)們(men)每一面(mian)(mian)的顏(yan)色(se)都不(bu)同(tong)，分為紅色(se)、綠色(se)和藍色(se)。這(zhe)三原色(se)能還(huan)原成(cheng)任意的其他(ta)顏(yan)色(se)。當顯(xian)示(shi)器(qi)收到(dao)顯(xian)示(shi)數據時，會控制每個液(ye)晶粒子轉動到(dao)不(bu)同(tong)顏(yan)色(se)的面(mian)(mian)，從而組(zu)合(he)成(cheng)不(bu)同(tong)的顏(yan)色(se)和圖像。也因為這(zhe)樣，LCD顯(xian)示(shi)器(qi)的缺點(dian)有(you)色(se)彩不(bu)夠(gou)艷(yan)和可視(shi)角度(du)不(bu)大等。
LED顯示(shi)器(qi)集微電子技術(shu)、計(ji)算機技術(shu)、信息(xi)處理(li)技術(shu)于一體，以(yi)其色彩鮮(xian)艷、動態范圍廣、亮(liang)度高、壽命長(chang)、工作(zuo)穩(wen)定(ding)可靠等優(you)點，成為具優(you)勢的(de)(de)新(xin)一代顯示(shi)設備。目前，LED顯示(shi)器(qi)已廣泛(fan)應用(yong)于大型廣場、體育場館、證券交易大廳等場所，可以(yi)滿(man)足不同(tong)環境的(de)(de)需要(yao)。
一(yi)般濕(shi)度保持在30%-80%之間，顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)都能正(zheng)常工(gong)(gong)作，但一(yi)旦室內濕(shi)度高(gao)于(yu)80%后，顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)內部就(jiu)會產(chan)生結露現象(xiang)。其(qi)內部的(de)電源變壓器(qi)(qi)(qi)和其(qi)他(ta)線圈(quan)受(shou)潮(chao)(chao)后也易產(chan)生漏電，甚至有可能造成連線短(duan)路；而顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)的(de)高(gao)壓部位則極易產(chan)生放(fang)電現象(xiang)；機內元器(qi)(qi)(qi)件容易生銹、腐蝕(shi)，嚴重(zhong)時會使(shi)電路板發生短(duan)路。因此(ci)，LCD顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)注意防潮(chao)(chao)，長時間不用(yong)的(de)顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)，可以(yi)定期通電工(gong)(gong)作一(yi)段時間，讓顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)工(gong)(gong)作時產(chan)生的(de)熱量將機內的(de)潮(chao)(chao)氣(qi)驅趕出去。
花屏(ping)(ping)(ping)通常是(shi)由于(yu)顯(xian)(xian)(xian)(xian)示(shi)器(qi)不支持(chi)主(zhu)機送來的顯(xian)(xian)(xian)(xian)示(shi)模式(shi)，往(wang)往(wang)是(shi)高于(yu)顯(xian)(xian)(xian)(xian)示(shi)器(qi)的顯(xian)(xian)(xian)(xian)示(shi)模式(shi)，引(yin)起屏(ping)(ping)(ping)幕的圖像混(hun)亂(luan)，無法(fa)看清楚屏(ping)(ping)(ping)幕上的圖像和文字。如(ru)果是(shi)具有模式(shi)自動識別的顯(xian)(xian)(xian)(xian)示(shi)器(qi)，有可能(neng)是(shi)黑屏(ping)(ping)(ping)狀(zhuang)態，但這(zhe)時面板(ban)下(xia)方指示(shi)燈(deng)為綠色(se)。這(zhe)時重新(xin)(xin)啟動即(ji)可恢復。如(ru)果這(zhe)種方法(fa)不行(xing)，可以在(zai)(zai)把顯(xian)(xian)(xian)(xian)卡(ka)驅(qu)動程(cheng)序刪除，然(ran)后在(zai)(zai)重新(xin)(xin)安裝顯(xian)(xian)(xian)(xian)卡(ka)驅(qu)動即(ji)可。還有在(zai)(zai)顯(xian)(xian)(xian)(xian)卡(ka)顯(xian)(xian)(xian)(xian)存(cun)發生故障(zhang)時會出現屏(ping)(ping)(ping)幕上固定位(wei)置顯(xian)(xian)(xian)(xian)示(shi)混(hun)亂(luan)，而其他地方卻顯(xian)(xian)(xian)(xian)示(shi)正常。也(ye)有顯(xian)(xian)(xian)(xian)卡(ka)損壞(huai)造(zao)成花屏(ping)(ping)(ping)的。
