顯(xian)示(shi)屏的(de)(de)亮(liang)度：要(yao)在一個環(huan)境(jing)中(zhong)正確(que)的(de)(de)顯(xian)示(shi)信息，要(yao)有(you)足夠的(de)(de)亮(liang)度以(yi)圖像(xiang)的(de)(de)實際對比(bi)度，尤其是用在戶外環(huan)境(jing)條(tiao)件惡(e)劣的(de)(de)戶外LED顯(xian)示(shi)屏。所(suo)(suo)以(yi)，根據使用環(huan)境(jing)的(de)(de)不(bu)同顯(xian)示(shi)屏要(yao)有(you)相應的(de)(de)亮(liang)度來。顯(xian)示(shi)屏投入使用后，做為(wei)發光源的(de)(de)LED管的(de)(de)亮(liang)度就開始衰(shuai)減(jian)，所(suo)(suo)以(yi)亮(liang)度衰(shuai)減(jian)的(de)(de)速(su)率是LED顯(xian)示(shi)屏的(de)(de)重要(yao)性(xing)能(neng)之一。
場(chang)(chang)(chang)(chang)(chang)掃描電(dian)(dian)路(lu)(lu)：包括場(chang)(chang)(chang)(chang)(chang)振(zhen)蕩和(he)(he)場(chang)(chang)(chang)(chang)(chang)輸(shu)出兩(liang)部分。場(chang)(chang)(chang)(chang)(chang)振(zhen)蕩電(dian)(dian)路(lu)(lu)在同(tong)步信號下，形成場(chang)(chang)(chang)(chang)(chang)頻(pin)鋸齒波(bo)，鋸齒波(bo)再(zai)由(you)場(chang)(chang)(chang)(chang)(chang)輸(shu)出電(dian)(dian)路(lu)(lu)功(gong)率放(fang)大后加(jia)至(zhi)場(chang)(chang)(chang)(chang)(chang)偏轉線圈，形成掃描電(dian)(dian)流，使電(dian)(dian)子(zi)槍發射(she)出的電(dian)(dian)子(zi)上下拉開。場(chang)(chang)(chang)(chang)(chang)幅(fu)和(he)(he)場(chang)(chang)(chang)(chang)(chang)中(zhong)心調節的功(gong)能(neng)也是(shi)在場(chang)(chang)(chang)(chang)(chang)掃描電(dian)(dian)路(lu)(lu)中(zhong)實現的，此外還輸(shu)出場(chang)(chang)(chang)(chang)(chang)頻(pin)鋸齒波(bo)到(dao)枕形校正電(dian)(dian)路(lu)(lu)，以(yi)校正水(shui)平枕形失真。
LCD顯(xian)(xian)示(shi)(shi)器(qi)(qi)即液(ye)(ye)晶(jing)顯(xian)(xian)示(shi)(shi)器(qi)(qi)。它的(de)(de)優點(dian)有(you)機身薄、占地小和(he)輻(fu)射(she)小。LCD顯(xian)(xian)示(shi)(shi)器(qi)(qi)內部有(you)很多液(ye)(ye)晶(jing)粒子，它們有(you)規(gui)律地排列(lie)成一定的(de)(de)形狀，并(bing)且它們每一面的(de)(de)顏色(se)都不(bu)(bu)(bu)同(tong)，分為紅色(se)、綠色(se)和(he)藍色(se)。這三原色(se)能(neng)還原成任意的(de)(de)其他顏色(se)。當顯(xian)(xian)示(shi)(shi)器(qi)(qi)收(shou)到顯(xian)(xian)示(shi)(shi)數據時，會控(kong)制每個液(ye)(ye)晶(jing)粒子轉(zhuan)動到不(bu)(bu)(bu)同(tong)顏色(se)的(de)(de)面，從(cong)而組合成不(bu)(bu)(bu)同(tong)的(de)(de)顏色(se)和(he)圖(tu)像(xiang)。也因(yin)為這樣，LCD顯(xian)(xian)示(shi)(shi)器(qi)(qi)的(de)(de)缺(que)點(dian)有(you)色(se)彩不(bu)(bu)(bu)夠艷和(he)可視角度不(bu)(bu)(bu)大等。
LED顯示器集微電(dian)子技術、計算機技術、信息處理技術于(yu)一(yi)體，以(yi)其色(se)彩鮮艷、動態范圍(wei)廣(guang)、亮度高、壽命長、工(gong)作穩定可靠(kao)等(deng)優點(dian)，成為具優勢的(de)新一(yi)代顯示設備。目前，LED顯示器已廣(guang)泛(fan)應(ying)用于(yu)大(da)型廣(guang)場、體育場館、證(zheng)券交易大(da)廳等(deng)場所，可以(yi)滿(man)足不同環境的(de)需要。
一(yi)般濕(shi)度保持在30%-80%之間，顯示器(qi)(qi)(qi)都能正常工(gong)作(zuo)，但一(yi)旦(dan)室(shi)內(nei)(nei)濕(shi)度高于80%后，顯示器(qi)(qi)(qi)內(nei)(nei)部就會產(chan)生結露現象。其(qi)(qi)內(nei)(nei)部的電(dian)(dian)(dian)源變壓器(qi)(qi)(qi)和其(qi)(qi)他線圈(quan)受潮(chao)(chao)后也易(yi)產(chan)生漏電(dian)(dian)(dian)，甚至有可能造成連線短路(lu)；而顯示器(qi)(qi)(qi)的高壓部位則極(ji)易(yi)產(chan)生放電(dian)(dian)(dian)現象；機內(nei)(nei)元(yuan)器(qi)(qi)(qi)件容易(yi)生銹、腐蝕，嚴重(zhong)時會使電(dian)(dian)(dian)路(lu)板發生短路(lu)。因此，LCD顯示器(qi)(qi)(qi)注意防(fang)潮(chao)(chao)，長(chang)時間不用的顯示器(qi)(qi)(qi)，可以定期通電(dian)(dian)(dian)工(gong)作(zuo)一(yi)段時間，讓(rang)顯示器(qi)(qi)(qi)工(gong)作(zuo)時產(chan)生的熱量將機內(nei)(nei)的潮(chao)(chao)氣驅趕(gan)出去。
花屏(ping)通常是(shi)由于顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器不支持主機送(song)來的顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模式(shi)(shi)，往(wang)往(wang)是(shi)高(gao)于顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器的顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模式(shi)(shi)，引起屏(ping)幕的圖像混亂，無法(fa)看清楚屏(ping)幕上(shang)的圖像和文(wen)字。如(ru)果(guo)是(shi)具(ju)有(you)模式(shi)(shi)自(zi)動(dong)識(shi)別的顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器，有(you)可能是(shi)黑屏(ping)狀態，但這時面板下(xia)方(fang)(fang)指示(shi)(shi)(shi)燈為綠(lv)色。這時重(zhong)新啟動(dong)即可恢復。如(ru)果(guo)這種方(fang)(fang)法(fa)不行，可以在(zai)把顯(xian)(xian)(xian)(xian)卡(ka)驅動(dong)程序刪(shan)除，然后在(zai)重(zhong)新安(an)裝顯(xian)(xian)(xian)(xian)卡(ka)驅動(dong)即可。還有(you)在(zai)顯(xian)(xian)(xian)(xian)卡(ka)顯(xian)(xian)(xian)(xian)存發生故(gu)障時會出現(xian)屏(ping)幕上(shang)固定(ding)位(wei)置(zhi)顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)混亂，而其他地方(fang)(fang)卻顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)正常。也有(you)顯(xian)(xian)(xian)(xian)卡(ka)損壞造成花屏(ping)的。
