顯(xian)(xian)示(shi)(shi)屏的(de)(de)(de)(de)(de)亮(liang)度：要在一(yi)個環境(jing)中正確的(de)(de)(de)(de)(de)顯(xian)(xian)示(shi)(shi)信息，要有(you)足夠的(de)(de)(de)(de)(de)亮(liang)度以(yi)圖像的(de)(de)(de)(de)(de)實際(ji)對比(bi)度，尤其是用在戶外環境(jing)條件(jian)惡劣的(de)(de)(de)(de)(de)戶外LED顯(xian)(xian)示(shi)(shi)屏。所(suo)以(yi)，根據使(shi)用環境(jing)的(de)(de)(de)(de)(de)不同顯(xian)(xian)示(shi)(shi)屏要有(you)相應的(de)(de)(de)(de)(de)亮(liang)度來。顯(xian)(xian)示(shi)(shi)屏投入使(shi)用后，做為(wei)發(fa)光源的(de)(de)(de)(de)(de)LED管(guan)的(de)(de)(de)(de)(de)亮(liang)度就開始衰減，所(suo)以(yi)亮(liang)度衰減的(de)(de)(de)(de)(de)速率是LED顯(xian)(xian)示(shi)(shi)屏的(de)(de)(de)(de)(de)重要性能之一(yi)。
場掃(sao)描電(dian)(dian)路(lu)：包括場振蕩和(he)場輸出(chu)兩部分。場振蕩電(dian)(dian)路(lu)在(zai)同步信號(hao)下，形成(cheng)場頻鋸齒波，鋸齒波再由場輸出(chu)電(dian)(dian)路(lu)功(gong)率放大后(hou)加至場偏轉線(xian)圈，形成(cheng)掃(sao)描電(dian)(dian)流，使電(dian)(dian)子槍發射出(chu)的電(dian)(dian)子上下拉(la)開(kai)。場幅(fu)和(he)場中心調節的功(gong)能也是在(zai)場掃(sao)描電(dian)(dian)路(lu)中實現的，此外還輸出(chu)場頻鋸齒波到枕形校正(zheng)電(dian)(dian)路(lu)，以(yi)校正(zheng)水(shui)平枕形失真。
LCD顯示(shi)(shi)(shi)器(qi)即(ji)液晶(jing)顯示(shi)(shi)(shi)器(qi)。它的(de)(de)(de)(de)優點(dian)有機身薄、占地(di)小和(he)輻射小。LCD顯示(shi)(shi)(shi)器(qi)內部有很(hen)多液晶(jing)粒子，它們有規律地(di)排列成(cheng)一定的(de)(de)(de)(de)形狀(zhuang)，并且(qie)它們每(mei)一面(mian)(mian)的(de)(de)(de)(de)顏(yan)(yan)色(se)都不(bu)同(tong)，分為(wei)紅色(se)、綠色(se)和(he)藍色(se)。這三(san)原(yuan)色(se)能還(huan)原(yuan)成(cheng)任意的(de)(de)(de)(de)其(qi)他顏(yan)(yan)色(se)。當顯示(shi)(shi)(shi)器(qi)收(shou)到顯示(shi)(shi)(shi)數據時，會(hui)控(kong)制每(mei)個液晶(jing)粒子轉動(dong)到不(bu)同(tong)顏(yan)(yan)色(se)的(de)(de)(de)(de)面(mian)(mian)，從而組合(he)成(cheng)不(bu)同(tong)的(de)(de)(de)(de)顏(yan)(yan)色(se)和(he)圖像。也因為(wei)這樣，LCD顯示(shi)(shi)(shi)器(qi)的(de)(de)(de)(de)缺點(dian)有色(se)彩不(bu)夠(gou)艷和(he)可視角度不(bu)大等。
LED顯(xian)(xian)示器(qi)集微電子技術(shu)、計算機技術(shu)、信息處理技術(shu)于一體(ti)，以其(qi)色彩鮮艷、動態范圍廣、亮度高、壽命(ming)長(chang)、工作穩定可靠等優點，成為(wei)具優勢的新一代(dai)顯(xian)(xian)示設備。目前，LED顯(xian)(xian)示器(qi)已廣泛應(ying)用于大型(xing)廣場(chang)、體(ti)育(yu)場(chang)館、證(zheng)券交易大廳等場(chang)所，可以滿足不同環(huan)境的需要。
一般(ban)濕(shi)(shi)度保持在30%-80%之間，顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)都能(neng)(neng)正常(chang)工(gong)作(zuo)(zuo)，但一旦室(shi)內(nei)濕(shi)(shi)度高(gao)于80%后(hou)，顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)內(nei)部(bu)(bu)就會(hui)產(chan)生(sheng)結露現象(xiang)。其內(nei)部(bu)(bu)的電(dian)(dian)源變壓器(qi)(qi)(qi)和其他線(xian)圈受潮后(hou)也易(yi)產(chan)生(sheng)漏電(dian)(dian)，甚至有可(ke)能(neng)(neng)造成連線(xian)短路(lu)；而顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)的高(gao)壓部(bu)(bu)位則極易(yi)產(chan)生(sheng)放(fang)電(dian)(dian)現象(xiang)；機內(nei)元器(qi)(qi)(qi)件(jian)容易(yi)生(sheng)銹(xiu)、腐(fu)蝕(shi)，嚴重時會(hui)使電(dian)(dian)路(lu)板發(fa)生(sheng)短路(lu)。因此，LCD顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)注意防潮，長時間不用(yong)的顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)，可(ke)以定期通(tong)電(dian)(dian)工(gong)作(zuo)(zuo)一段時間，讓顯(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)(qi)工(gong)作(zuo)(zuo)時產(chan)生(sheng)的熱量將機內(nei)的潮氣驅趕出去。
花屏(ping)(ping)通(tong)常是由于顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)不(bu)支(zhi)持主機送來的顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模式，往往是高于顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)的顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模式，引起屏(ping)(ping)幕的圖像混亂，無法看清楚屏(ping)(ping)幕上的圖像和文字。如(ru)果是具有(you)模式自動(dong)(dong)識別的顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器(qi)(qi)，有(you)可(ke)能(neng)是黑屏(ping)(ping)狀態(tai)，但這(zhe)時(shi)(shi)面板下方(fang)指示(shi)(shi)(shi)燈為綠色。這(zhe)時(shi)(shi)重新(xin)啟動(dong)(dong)即(ji)可(ke)恢復。如(ru)果這(zhe)種方(fang)法不(bu)行，可(ke)以在把(ba)顯(xian)(xian)(xian)(xian)(xian)卡(ka)驅(qu)動(dong)(dong)程(cheng)序刪(shan)除(chu)，然后在重新(xin)安裝顯(xian)(xian)(xian)(xian)(xian)卡(ka)驅(qu)動(dong)(dong)即(ji)可(ke)。還有(you)在顯(xian)(xian)(xian)(xian)(xian)卡(ka)顯(xian)(xian)(xian)(xian)(xian)存發(fa)生故(gu)障時(shi)(shi)會出現屏(ping)(ping)幕上固定位置顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)混亂，而(er)其他地方(fang)卻顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)正常。也(ye)有(you)顯(xian)(xian)(xian)(xian)(xian)卡(ka)損壞(huai)造成花屏(ping)(ping)的。
