電(dian)容觸摸屏(ping)的漂移問(wen)題(ti)。在(zai)(zai)觸摸屏(ping)產(chan)品中(zhong)，電(dian)容觸摸屏(ping)是我們常用(yong)的觸摸屏(ping)方式，那(nei)么，對于電(dian)容觸摸屏(ping)來說，其產(chan)品本身應(ying)用(yong)比較廣(guang)泛，但(dan)是也存(cun)在(zai)(zai)著(zhu)不(bu)少(shao)問(wen)題(ti)。而且由于現在(zai)(zai)科技(ji)的發(fa)展程度還無法完全解決觸摸屏(ping)產(chan)品在(zai)(zai)相關原理上出現的問(wen)題(ti)，所以對于這些問(wen)題(ti)，目(mu)前(qian)還是普遍存(cun)在(zai)(zai)的。
在(zai)這(zhe)里(li)武(wu)(wu)漢(han)公(gong)司要(yao)(yao)跟(gen)大家討論的(de)是(shi)(shi)關于電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的(de)"漂(piao)移"問(wen)題(ti)，這(zhe)個問(wen)題(ti)比較常見，也是(shi)(shi)我們在(zai)解決產品問(wen)題(ti)時主要(yao)(yao)考慮的(de)方面。 電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的(de)漂(piao)移問(wen)題(ti)介紹！ 武(wu)(wu)漢(han)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)公(gong)司提(ti)示，電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)本身(shen)實際是(shi)(shi)一(yi)套(tao)(tao)精(jing)密的(de)漏電(dian)(dian)傳感器，帶手(shou)套(tao)(tao)的(de)手(shou)不能觸(chu)(chu)(chu)摸(mo)(mo)，由于使用電(dian)(dian)容(rong)(rong)方式，導致有(you)(you)漂(piao)移現象。電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)和(he)電(dian)(dian)阻觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)都(dou)是(shi)(shi)電(dian)(dian)原(yuan)理工(gong)(gong)作(zuo)方式，電(dian)(dian)工(gong)(gong)作(zuo)方式對于多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)，不管是(shi)(shi)多(duo)少點(dian)，也不管是(shi)(shi)連續(xu)的(de)還(huan)是(shi)(shi)不連續(xu)的(de)都(dou)是(shi)(shi)取(qu)多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)的(de)中心點(dian)判斷(duan)，因為(wei)電(dian)(dian)流疊加是(shi)(shi)分不出來誰是(shi)(shi)誰的(de)，沒有(you)(you)辦法。
但是(shi)(shi)(shi)，目前來(lai)(lai)說，電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)仍(reng)然有(you)不(bu)(bu)(bu)少問題存在。武(wu)漢公司信(xin)(xin)為(wei)(wei)，觸摸(mo)(mo)(mo)屏(ping)目前的(de)(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)材料ITO--氧化金屬非(fei)(fei)常(chang)(chang)脆弱，觸摸(mo)(mo)(mo)幾下就會(hui)損壞，還不(bu)(bu)(bu)能直(zhi)接用(yong)來(lai)(lai)作(zuo)工(gong)作(zuo)層(ceng)。材料的(de)(de)(de)(de)(de)(de)問題一(yi)時還難以解決，只好委曲求全：在外部增加一(yi)層(ceng)非(fei)(fei)常(chang)(chang)薄的(de)(de)(de)(de)(de)(de)堅硬玻(bo)璃(li)，它顯然是(shi)(shi)(shi)不(bu)(bu)(bu)能導電(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)，直(zhi)流(liu)是(shi)(shi)(shi)不(bu)(bu)(bu)行了，改用(yong)高頻交(jiao)流(liu)信(xin)(xin)號，靠人(ren)的(de)(de)(de)(de)(de)(de)手指頭（隔著(zhu)薄玻(bo)璃(li)）與工(gong)作(zuo)面(mian)形成(cheng)的(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)容(rong)(rong)來(lai)(lai)吸走一(yi)個交(jiao)流(liu)電(dian)(dian)(dian)流(liu)，這就是(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)屏(ping)"電(dian)(dian)(dian)容(rong)(rong)"名(ming)字的(de)(de)(de)(de)(de)(de)由來(lai)(lai)。 電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)之所以出(chu)現"漂(piao)(piao)(piao)移"的(de)(de)(de)(de)(de)(de)問題，是(shi)(shi)(shi)因為(wei)(wei)耦合電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)(shi)不(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)，它直(zhi)接受(shou)溫度(du)(du)、濕(shi)度(du)(du)、手指濕(shi)潤程(cheng)(cheng)度(du)(du)、人(ren)體(ti)體(ti)重、地面(mian)干燥程(cheng)(cheng)度(du)(du)影(ying)響，受(shou)外界大面(mian)積物體(ti)的(de)(de)(de)(de)(de)(de)干擾也非(fei)(fei)常(chang)(chang)大，帶來(lai)(lai)了不(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)結果，這些都直(zhi)接違背了作(zuo)為(wei)(wei)觸摸(mo)(mo)(mo)屏(ping)這種(zhong)坐標系統(tong)的(de)(de)(de)(de)(de)(de)基本要(yao)(yao)求，不(bu)(bu)(bu)可避免的(de)(de)(de)(de)(de)(de)要(yao)(yao)產生漂(piao)(piao)(piao)移，有(you)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)欲求通過25點校準(zhun)法(fa)甚至(zhi)96點校準(zhun)法(fa)來(lai)(lai)解決漂(piao)(piao)(piao)移問題，其實(shi)是(shi)(shi)(shi)不(bu)(bu)(bu)可能的(de)(de)(de)(de)(de)(de)，漂(piao)(piao)(piao)移是(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)工(gong)作(zuo)的(de)(de)(de)(de)(de)(de)這種(zhong)方式(shi)決定的(de)(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)在控(kong)制器的(de)(de)(de)(de)(de)(de)單片(pian)程(cheng)(cheng)序上利用(yong)動(dong)態(tai)計算和經驗值(zhi)查表，也只能是(shi)(shi)(shi)治標不(bu)(bu)(bu)治本。 其實(shi)，多(duo)點校準(zhun)法(fa)最(zui)早(zao)是(shi)(shi)(shi)大屏(ping)幕(mu)投(tou)影(ying)觸摸(mo)(mo)(mo)板使用(yong)的(de)(de)(de)(de)(de)(de)方法(fa)，目的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)消(xiao)除坐標對應的(de)(de)(de)(de)(de)(de)線xing失(shi)(shi)真，電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)的(de)(de)(de)(de)(de)(de)線xing失(shi)(shi)真也非(fei)(fei)常(chang)(chang)厲害(hai)，主要(yao)(yao)是(shi)(shi)(shi)因為(wei)(wei)電(dian)(dian)(dian)容(rong)(rong)屏(ping)的(de)(de)(de)(de)(de)(de)計算建立(li)在四(si)個電(dian)(dian)(dian)流(liu)量(liang)與觸摸(mo)(mo)(mo)點到四(si)個電(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)距離成(cheng)比例(li)的(de)(de)(de)(de)(de)(de)理想(xiang)狀態(tai)上，實(shi)際由于(yu)受(shou)環境(jing)電(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)(bu)同人(ren)使用(yong)的(de)(de)(de)(de)(de)(de)影(ying)響。
