顯(xian)示屏(ping)的(de)(de)(de)亮度：要(yao)在一個環(huan)境(jing)中正確的(de)(de)(de)顯(xian)示信(xin)息，要(yao)有(you)足夠的(de)(de)(de)亮度以(yi)圖像的(de)(de)(de)實際對比(bi)度，尤其是(shi)用(yong)(yong)在戶外(wai)環(huan)境(jing)條(tiao)件惡劣的(de)(de)(de)戶外(wai)LED顯(xian)示屏(ping)。所(suo)以(yi)，根據使用(yong)(yong)環(huan)境(jing)的(de)(de)(de)不同顯(xian)示屏(ping)要(yao)有(you)相(xiang)應的(de)(de)(de)亮度來。顯(xian)示屏(ping)投入使用(yong)(yong)后，做為發光源的(de)(de)(de)LED管的(de)(de)(de)亮度就開始衰減，所(suo)以(yi)亮度衰減的(de)(de)(de)速率(lv)是(shi)LED顯(xian)示屏(ping)的(de)(de)(de)重要(yao)性(xing)能之一。
場(chang)(chang)掃描電(dian)(dian)路(lu)：包括(kuo)場(chang)(chang)振(zhen)蕩和(he)場(chang)(chang)輸出(chu)兩部分。場(chang)(chang)振(zhen)蕩電(dian)(dian)路(lu)在同(tong)步(bu)信號下(xia)，形成場(chang)(chang)頻(pin)鋸(ju)齒波(bo)(bo)，鋸(ju)齒波(bo)(bo)再(zai)由場(chang)(chang)輸出(chu)電(dian)(dian)路(lu)功率放大(da)后(hou)加至場(chang)(chang)偏轉線圈，形成掃描電(dian)(dian)流，使(shi)電(dian)(dian)子槍(qiang)發射出(chu)的(de)(de)電(dian)(dian)子上下(xia)拉開。場(chang)(chang)幅和(he)場(chang)(chang)中(zhong)心(xin)調節的(de)(de)功能也(ye)是在場(chang)(chang)掃描電(dian)(dian)路(lu)中(zhong)實(shi)現(xian)的(de)(de)，此外(wai)還輸出(chu)場(chang)(chang)頻(pin)鋸(ju)齒波(bo)(bo)到(dao)枕(zhen)形校正(zheng)電(dian)(dian)路(lu)，以(yi)校正(zheng)水平枕(zhen)形失真。
LCD顯(xian)示(shi)(shi)器(qi)即液(ye)晶(jing)顯(xian)示(shi)(shi)器(qi)。它的(de)(de)(de)優(you)點有機(ji)身薄、占(zhan)地小和(he)(he)輻射小。LCD顯(xian)示(shi)(shi)器(qi)內部有很多液(ye)晶(jing)粒(li)子(zi)，它們有規律地排列成(cheng)一定的(de)(de)(de)形狀(zhuang)，并且它們每一面(mian)的(de)(de)(de)顏(yan)(yan)色(se)(se)(se)都不(bu)(bu)同，分為(wei)紅色(se)(se)(se)、綠色(se)(se)(se)和(he)(he)藍色(se)(se)(se)。這三原色(se)(se)(se)能還(huan)原成(cheng)任意的(de)(de)(de)其他顏(yan)(yan)色(se)(se)(se)。當(dang)顯(xian)示(shi)(shi)器(qi)收到(dao)顯(xian)示(shi)(shi)數據時(shi)，會控制(zhi)每個液(ye)晶(jing)粒(li)子(zi)轉動到(dao)不(bu)(bu)同顏(yan)(yan)色(se)(se)(se)的(de)(de)(de)面(mian)，從(cong)而組合(he)成(cheng)不(bu)(bu)同的(de)(de)(de)顏(yan)(yan)色(se)(se)(se)和(he)(he)圖像。也因為(wei)這樣，LCD顯(xian)示(shi)(shi)器(qi)的(de)(de)(de)缺點有色(se)(se)(se)彩不(bu)(bu)夠艷和(he)(he)可(ke)視角度不(bu)(bu)大(da)等。
LED顯示器集微電子技術、計算機技術、信息處理(li)技術于一(yi)體，以其色(se)彩鮮艷(yan)、動態范圍廣、亮度高、壽命長、工作穩定可(ke)靠等優(you)點，成為具優(you)勢(shi)的(de)新(xin)一(yi)代顯示設備。目前，LED顯示器已廣泛應用于大型(xing)廣場、體育場館、證(zheng)券交易大廳等場所，可(ke)以滿(man)足不(bu)同環境(jing)的(de)需(xu)要。
一(yi)般濕度保(bao)持在30%-80%之間(jian)，顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)都能正(zheng)常工作(zuo)，但一(yi)旦室(shi)內(nei)濕度高(gao)于80%后，顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)內(nei)部就會產(chan)生(sheng)(sheng)結露(lu)現象。其(qi)內(nei)部的電(dian)(dian)源(yuan)變壓器(qi)(qi)和(he)其(qi)他(ta)線(xian)圈受潮后也易(yi)產(chan)生(sheng)(sheng)漏電(dian)(dian)，甚至有可(ke)能造成連線(xian)短路(lu)；而顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)的高(gao)壓部位則極易(yi)產(chan)生(sheng)(sheng)放電(dian)(dian)現象；機(ji)(ji)內(nei)元器(qi)(qi)件容易(yi)生(sheng)(sheng)銹、腐(fu)蝕，嚴重時(shi)(shi)會使電(dian)(dian)路(lu)板發生(sheng)(sheng)短路(lu)。因(yin)此，LCD顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)注意防潮，長(chang)時(shi)(shi)間(jian)不用的顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)，可(ke)以定期通電(dian)(dian)工作(zuo)一(yi)段(duan)時(shi)(shi)間(jian)，讓顯(xian)(xian)(xian)示(shi)(shi)器(qi)(qi)工作(zuo)時(shi)(shi)產(chan)生(sheng)(sheng)的熱量(liang)將機(ji)(ji)內(nei)的潮氣驅(qu)趕(gan)出去。
花屏通常是由(you)于(yu)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)器(qi)不支(zhi)持主機(ji)送(song)來的(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)模(mo)式(shi)，往往是高于(yu)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)器(qi)的(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)模(mo)式(shi)，引(yin)起屏幕(mu)的(de)圖(tu)像(xiang)混亂，無法看(kan)清楚屏幕(mu)上的(de)圖(tu)像(xiang)和文字(zi)。如(ru)果是具(ju)有模(mo)式(shi)自動(dong)識別的(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)器(qi)，有可(ke)(ke)能是黑屏狀態(tai)，但(dan)這時(shi)面板下(xia)方指(zhi)示(shi)(shi)(shi)(shi)燈為綠(lv)色。這時(shi)重(zhong)新啟動(dong)即(ji)可(ke)(ke)恢復。如(ru)果這種方法不行，可(ke)(ke)以(yi)在(zai)把(ba)顯(xian)(xian)(xian)(xian)(xian)卡(ka)(ka)驅(qu)動(dong)程序刪除，然后在(zai)重(zhong)新安裝顯(xian)(xian)(xian)(xian)(xian)卡(ka)(ka)驅(qu)動(dong)即(ji)可(ke)(ke)。還有在(zai)顯(xian)(xian)(xian)(xian)(xian)卡(ka)(ka)顯(xian)(xian)(xian)(xian)(xian)存發(fa)生故障(zhang)時(shi)會(hui)出現屏幕(mu)上固定位置顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)混亂，而其他(ta)地方卻(que)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)(shi)正常。也有顯(xian)(xian)(xian)(xian)(xian)卡(ka)(ka)損壞(huai)造成花屏的(de)。
