顯(xian)(xian)示(shi)屏的亮(liang)度(du)：要(yao)(yao)在(zai)一(yi)(yi)個環境(jing)中正確的顯(xian)(xian)示(shi)信息，要(yao)(yao)有足夠的亮(liang)度(du)以圖像的實(shi)際對比度(du)，尤(you)其(qi)是用在(zai)戶外環境(jing)條件惡劣的戶外LED顯(xian)(xian)示(shi)屏。所以，根據(ju)使用環境(jing)的不同顯(xian)(xian)示(shi)屏要(yao)(yao)有相應的亮(liang)度(du)來。顯(xian)(xian)示(shi)屏投入使用后(hou)，做為發光源的LED管的亮(liang)度(du)就(jiu)開始衰減，所以亮(liang)度(du)衰減的速率是LED顯(xian)(xian)示(shi)屏的重(zhong)要(yao)(yao)性能之一(yi)(yi)。
場(chang)(chang)(chang)掃描(miao)電(dian)(dian)(dian)路(lu)(lu)：包括場(chang)(chang)(chang)振(zhen)蕩和場(chang)(chang)(chang)輸出(chu)兩部分。場(chang)(chang)(chang)振(zhen)蕩電(dian)(dian)(dian)路(lu)(lu)在(zai)同步信號下，形(xing)成場(chang)(chang)(chang)頻鋸(ju)齒波(bo)，鋸(ju)齒波(bo)再由場(chang)(chang)(chang)輸出(chu)電(dian)(dian)(dian)路(lu)(lu)功(gong)率(lv)放(fang)大后(hou)加至場(chang)(chang)(chang)偏轉線圈，形(xing)成掃描(miao)電(dian)(dian)(dian)流，使電(dian)(dian)(dian)子槍發射出(chu)的電(dian)(dian)(dian)子上下拉開。場(chang)(chang)(chang)幅和場(chang)(chang)(chang)中心調(diao)節(jie)的功(gong)能(neng)也是在(zai)場(chang)(chang)(chang)掃描(miao)電(dian)(dian)(dian)路(lu)(lu)中實現(xian)的，此外還輸出(chu)場(chang)(chang)(chang)頻鋸(ju)齒波(bo)到枕形(xing)校正電(dian)(dian)(dian)路(lu)(lu)，以(yi)校正水平枕形(xing)失真。
LCD顯示(shi)器(qi)即液晶(jing)顯示(shi)器(qi)。它(ta)的(de)(de)優點有(you)機身薄、占地(di)小和(he)輻(fu)射小。LCD顯示(shi)器(qi)內(nei)部(bu)有(you)很多液晶(jing)粒子，它(ta)們(men)有(you)規律地(di)排列成一定的(de)(de)形狀，并且它(ta)們(men)每一面的(de)(de)顏色(se)(se)都不(bu)同(tong)，分為(wei)(wei)紅色(se)(se)、綠色(se)(se)和(he)藍色(se)(se)。這(zhe)三原色(se)(se)能(neng)還原成任(ren)意的(de)(de)其他顏色(se)(se)。當(dang)顯示(shi)器(qi)收到顯示(shi)數(shu)據時(shi)，會控制每個液晶(jing)粒子轉動(dong)到不(bu)同(tong)顏色(se)(se)的(de)(de)面，從而(er)組合成不(bu)同(tong)的(de)(de)顏色(se)(se)和(he)圖像。也因為(wei)(wei)這(zhe)樣，LCD顯示(shi)器(qi)的(de)(de)缺點有(you)色(se)(se)彩不(bu)夠(gou)艷和(he)可視角度不(bu)大等。
LED顯(xian)(xian)示(shi)(shi)(shi)器(qi)集微電子(zi)技術(shu)、計算機(ji)技術(shu)、信息處理技術(shu)于一體(ti)，以其(qi)色彩鮮艷、動態(tai)范(fan)圍廣(guang)、亮度高、壽(shou)命長、工作穩定可(ke)(ke)靠等優點，成為具優勢的新一代顯(xian)(xian)示(shi)(shi)(shi)設備(bei)。目前，LED顯(xian)(xian)示(shi)(shi)(shi)器(qi)已(yi)廣(guang)泛應用于大型廣(guang)場、體(ti)育場館、證券(quan)交(jiao)易大廳等場所，可(ke)(ke)以滿足不同環境的需要。
一(yi)(yi)般濕度(du)保持在30%-80%之(zhi)間，顯(xian)示器(qi)(qi)(qi)(qi)都能正常工(gong)作，但(dan)一(yi)(yi)旦室內(nei)(nei)濕度(du)高于80%后(hou)，顯(xian)示器(qi)(qi)(qi)(qi)內(nei)(nei)部(bu)就(jiu)會產(chan)生(sheng)結露(lu)現(xian)象。其內(nei)(nei)部(bu)的(de)電源(yuan)變壓器(qi)(qi)(qi)(qi)和其他線圈受潮后(hou)也易(yi)產(chan)生(sheng)漏電，甚至(zhi)有可能造成連線短(duan)路；而顯(xian)示器(qi)(qi)(qi)(qi)的(de)高壓部(bu)位(wei)則極易(yi)產(chan)生(sheng)放電現(xian)象；機(ji)(ji)內(nei)(nei)元器(qi)(qi)(qi)(qi)件(jian)容易(yi)生(sheng)銹(xiu)、腐蝕，嚴重時(shi)會使電路板(ban)發生(sheng)短(duan)路。因此(ci)，LCD顯(xian)示器(qi)(qi)(qi)(qi)注(zhu)意防潮，長時(shi)間不用(yong)的(de)顯(xian)示器(qi)(qi)(qi)(qi)，可以定期通(tong)電工(gong)作一(yi)(yi)段時(shi)間，讓顯(xian)示器(qi)(qi)(qi)(qi)工(gong)作時(shi)產(chan)生(sheng)的(de)熱量將機(ji)(ji)內(nei)(nei)的(de)潮氣驅趕出去。
花屏(ping)(ping)通(tong)常是(shi)由于(yu)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器不支持主機(ji)送來的(de)(de)(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模(mo)式，往(wang)往(wang)是(shi)高(gao)于(yu)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器的(de)(de)(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)模(mo)式，引起屏(ping)(ping)幕(mu)的(de)(de)(de)圖像(xiang)混亂(luan)，無(wu)法看清楚屏(ping)(ping)幕(mu)上的(de)(de)(de)圖像(xiang)和(he)文字。如果是(shi)具有模(mo)式自動(dong)識別的(de)(de)(de)顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)器，有可能是(shi)黑(hei)屏(ping)(ping)狀態(tai)，但這(zhe)時(shi)面板(ban)下方指示(shi)(shi)(shi)燈(deng)為綠色。這(zhe)時(shi)重新啟動(dong)即可恢(hui)復。如果這(zhe)種(zhong)方法不行，可以在(zai)把顯(xian)(xian)(xian)(xian)(xian)卡(ka)驅(qu)動(dong)程(cheng)序刪除，然(ran)后在(zai)重新安(an)裝顯(xian)(xian)(xian)(xian)(xian)卡(ka)驅(qu)動(dong)即可。還(huan)有在(zai)顯(xian)(xian)(xian)(xian)(xian)卡(ka)顯(xian)(xian)(xian)(xian)(xian)存發生故障時(shi)會出現屏(ping)(ping)幕(mu)上固(gu)定位置顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)混亂(luan)，而其他地方卻顯(xian)(xian)(xian)(xian)(xian)示(shi)(shi)(shi)正常。也有顯(xian)(xian)(xian)(xian)(xian)卡(ka)損壞(huai)造成花屏(ping)(ping)的(de)(de)(de)。
