顯(xian)(xian)示(shi)屏(ping)(ping)的(de)亮度(du)(du)：要(yao)(yao)在一個(ge)環(huan)境中正(zheng)確的(de)顯(xian)(xian)示(shi)信息，要(yao)(yao)有足(zu)夠的(de)亮度(du)(du)以(yi)圖(tu)像的(de)實(shi)際對比度(du)(du)，尤其是(shi)(shi)用(yong)(yong)在戶外(wai)環(huan)境條件(jian)惡劣的(de)戶外(wai)LED顯(xian)(xian)示(shi)屏(ping)(ping)。所以(yi)，根(gen)據使用(yong)(yong)環(huan)境的(de)不同(tong)顯(xian)(xian)示(shi)屏(ping)(ping)要(yao)(yao)有相應的(de)亮度(du)(du)來。顯(xian)(xian)示(shi)屏(ping)(ping)投入使用(yong)(yong)后，做為(wei)發光(guang)源的(de)LED管的(de)亮度(du)(du)就開(kai)始衰減(jian)，所以(yi)亮度(du)(du)衰減(jian)的(de)速率是(shi)(shi)LED顯(xian)(xian)示(shi)屏(ping)(ping)的(de)重要(yao)(yao)性能之一。
場(chang)掃(sao)描電(dian)(dian)路：包括場(chang)振(zhen)(zhen)蕩和(he)場(chang)輸出(chu)(chu)(chu)兩部分。場(chang)振(zhen)(zhen)蕩電(dian)(dian)路在同步信號下，形成場(chang)頻(pin)鋸齒波，鋸齒波再由場(chang)輸出(chu)(chu)(chu)電(dian)(dian)路功(gong)率放(fang)大后加(jia)至場(chang)偏轉線圈，形成掃(sao)描電(dian)(dian)流，使(shi)電(dian)(dian)子槍發射(she)出(chu)(chu)(chu)的(de)電(dian)(dian)子上下拉開。場(chang)幅和(he)場(chang)中心調節(jie)的(de)功(gong)能也是(shi)在場(chang)掃(sao)描電(dian)(dian)路中實現的(de)，此外(wai)還輸出(chu)(chu)(chu)場(chang)頻(pin)鋸齒波到(dao)枕形校(xiao)正(zheng)電(dian)(dian)路，以校(xiao)正(zheng)水平枕形失(shi)真(zhen)。
LCD顯(xian)(xian)(xian)示器(qi)即液(ye)晶顯(xian)(xian)(xian)示器(qi)。它(ta)的(de)(de)(de)(de)優點(dian)有(you)機身薄、占地(di)小(xiao)和輻射小(xiao)。LCD顯(xian)(xian)(xian)示器(qi)內部有(you)很多液(ye)晶粒子，它(ta)們(men)有(you)規律(lv)地(di)排列成一定的(de)(de)(de)(de)形狀，并(bing)且它(ta)們(men)每(mei)一面的(de)(de)(de)(de)顏(yan)色(se)(se)(se)(se)都不(bu)同(tong)，分為(wei)紅(hong)色(se)(se)(se)(se)、綠色(se)(se)(se)(se)和藍色(se)(se)(se)(se)。這三原色(se)(se)(se)(se)能還(huan)原成任意的(de)(de)(de)(de)其(qi)他顏(yan)色(se)(se)(se)(se)。當顯(xian)(xian)(xian)示器(qi)收到顯(xian)(xian)(xian)示數據時，會控(kong)制每(mei)個液(ye)晶粒子轉動到不(bu)同(tong)顏(yan)色(se)(se)(se)(se)的(de)(de)(de)(de)面，從而組合(he)成不(bu)同(tong)的(de)(de)(de)(de)顏(yan)色(se)(se)(se)(se)和圖像。也因為(wei)這樣，LCD顯(xian)(xian)(xian)示器(qi)的(de)(de)(de)(de)缺點(dian)有(you)色(se)(se)(se)(se)彩(cai)不(bu)夠艷和可(ke)視(shi)角度不(bu)大等。
LED顯(xian)示器集微電子技術(shu)、計算(suan)機技術(shu)、信(xin)息處理技術(shu)于(yu)一體，以(yi)其色彩鮮艷、動態范圍廣、亮度高、壽命(ming)長、工(gong)作穩定可靠等優(you)點，成為(wei)具優(you)勢的(de)新一代(dai)顯(xian)示設備。目前，LED顯(xian)示器已廣泛應用于(yu)大型廣場、體育場館、證券(quan)交易大廳等場所(suo)，可以(yi)滿足不同環(huan)境的(de)需要。
一(yi)般(ban)濕度(du)保持在30%-80%之(zhi)間，顯示(shi)器(qi)(qi)(qi)都能(neng)正常工(gong)作，但一(yi)旦(dan)室內濕度(du)高于80%后，顯示(shi)器(qi)(qi)(qi)內部就會產(chan)生(sheng)(sheng)結露現(xian)象。其(qi)內部的(de)電(dian)源變壓(ya)器(qi)(qi)(qi)和其(qi)他線圈受潮(chao)后也易產(chan)生(sheng)(sheng)漏電(dian)，甚至有(you)可能(neng)造成連線短(duan)路(lu)；而顯示(shi)器(qi)(qi)(qi)的(de)高壓(ya)部位(wei)則極易產(chan)生(sheng)(sheng)放電(dian)現(xian)象；機(ji)內元器(qi)(qi)(qi)件容易生(sheng)(sheng)銹、腐(fu)蝕(shi)，嚴重時(shi)會使(shi)電(dian)路(lu)板(ban)發生(sheng)(sheng)短(duan)路(lu)。因此，LCD顯示(shi)器(qi)(qi)(qi)注意(yi)防潮(chao)，長時(shi)間不(bu)用的(de)顯示(shi)器(qi)(qi)(qi)，可以(yi)定期通(tong)電(dian)工(gong)作一(yi)段(duan)時(shi)間，讓顯示(shi)器(qi)(qi)(qi)工(gong)作時(shi)產(chan)生(sheng)(sheng)的(de)熱(re)量(liang)將機(ji)內的(de)潮(chao)氣(qi)驅趕出去(qu)。
花屏通常是(shi)由于顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器不支持(chi)主機送(song)來的(de)顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模(mo)式，往(wang)往(wang)是(shi)高于顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器的(de)顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模(mo)式，引(yin)起屏幕的(de)圖像混亂，無法看清楚屏幕上(shang)的(de)圖像和文字(zi)。如果是(shi)具有(you)模(mo)式自動識別的(de)顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器，有(you)可(ke)(ke)能是(shi)黑屏狀態，但(dan)這時(shi)面(mian)板下方指(zhi)示(shi)(shi)(shi)燈為綠色。這時(shi)重新(xin)啟動即可(ke)(ke)恢復(fu)。如果這種方法不行，可(ke)(ke)以在(zai)把顯(xian)(xian)(xian)(xian)卡驅動程序刪除，然(ran)后在(zai)重新(xin)安裝顯(xian)(xian)(xian)(xian)卡驅動即可(ke)(ke)。還(huan)有(you)在(zai)顯(xian)(xian)(xian)(xian)卡顯(xian)(xian)(xian)(xian)存(cun)發生(sheng)故障時(shi)會出現屏幕上(shang)固定位置顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)混亂，而其他(ta)地方卻顯(xian)(xian)(xian)(xian)示(shi)(shi)(shi)正常。也(ye)有(you)顯(xian)(xian)(xian)(xian)卡損(sun)壞造成花屏的(de)。
