電容(rong)觸(chu)摸屏(ping)的(de)漂移問題。在(zai)(zai)(zai)觸(chu)摸屏(ping)產品中(zhong)，電容(rong)觸(chu)摸屏(ping)是(shi)(shi)我們常用的(de)觸(chu)摸屏(ping)方式，那么，對(dui)于電容(rong)觸(chu)摸屏(ping)來說，其(qi)產品本身應用比較廣泛(fan)，但是(shi)(shi)也存在(zai)(zai)(zai)著不(bu)少問題。而且由于現(xian)在(zai)(zai)(zai)科技的(de)發展程度還(huan)無法完全解決觸(chu)摸屏(ping)產品在(zai)(zai)(zai)相關原(yuan)理上出(chu)現(xian)的(de)問題，所以對(dui)于這些問題，目前還(huan)是(shi)(shi)普遍(bian)存在(zai)(zai)(zai)的(de)。
在(zai)這(zhe)里(li)武漢公司(si)要(yao)跟大家討(tao)論的(de)(de)是(shi)(shi)關于電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)"漂(piao)移"問(wen)(wen)題，這(zhe)個問(wen)(wen)題比較常(chang)見(jian)，也是(shi)(shi)我們在(zai)解決產品問(wen)(wen)題時主要(yao)考慮(lv)的(de)(de)方(fang)面。 電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)漂(piao)移問(wen)(wen)題介紹！ 武漢觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)公司(si)提示，電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)本身實(shi)際是(shi)(shi)一套精密的(de)(de)漏電(dian)(dian)(dian)傳感器，帶手套的(de)(de)手不(bu)(bu)能觸(chu)(chu)摸(mo)，由于使用電(dian)(dian)(dian)容(rong)方(fang)式(shi)，導致有漂(piao)移現象。電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)和電(dian)(dian)(dian)阻觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)都(dou)是(shi)(shi)電(dian)(dian)(dian)原(yuan)理工(gong)(gong)作方(fang)式(shi)，電(dian)(dian)(dian)工(gong)(gong)作方(fang)式(shi)對(dui)于多點(dian)(dian)觸(chu)(chu)摸(mo)，不(bu)(bu)管(guan)是(shi)(shi)多少點(dian)(dian)，也不(bu)(bu)管(guan)是(shi)(shi)連續的(de)(de)還是(shi)(shi)不(bu)(bu)連續的(de)(de)都(dou)是(shi)(shi)取多點(dian)(dian)觸(chu)(chu)摸(mo)的(de)(de)中心點(dian)(dian)判斷，因(yin)為電(dian)(dian)(dian)流疊加(jia)是(shi)(shi)分(fen)不(bu)(bu)出(chu)來誰(shui)是(shi)(shi)誰(shui)的(de)(de)，沒(mei)有辦法。
但(dan)是(shi)(shi)(shi)(shi)，目(mu)前(qian)來(lai)說，電(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)仍然有不(bu)(bu)少問(wen)(wen)題(ti)存在。武漢公司信為，觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)目(mu)前(qian)的(de)(de)(de)(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)材(cai)料ITO--氧化金屬非(fei)常脆(cui)弱，觸(chu)(chu)摸(mo)(mo)(mo)(mo)幾下(xia)就(jiu)(jiu)會損壞，還不(bu)(bu)能直(zhi)(zhi)接(jie)用(yong)來(lai)作工(gong)(gong)作層(ceng)。材(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)一(yi)時還難(nan)以(yi)(yi)解決，只(zhi)(zhi)好委曲求(qiu)全：在外部(bu)增加(jia)一(yi)層(ceng)非(fei)常薄(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)堅(jian)硬玻璃(li)，它顯然是(shi)(shi)(shi)(shi)不(bu)(bu)能導電(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)，直(zhi)(zhi)流(liu)是(shi)(shi)(shi)(shi)不(bu)(bu)行了(le)，改用(yong)高頻交流(liu)信號，靠人的(de)(de)(de)(de)(de)(de)(de)(de)手指頭（隔(ge)著薄(bo)(bo)玻璃(li)）與工(gong)(gong)作面形成的(de)(de)(de)(de)(de)(de)(de)(de)耦(ou)合電(dian)(dian)(dian)容(rong)(rong)來(lai)吸走一(yi)個(ge)交流(liu)電(dian)(dian)(dian)流(liu)，這(zhe)就(jiu)(jiu)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)(ping)"電(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)(de)(de)(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)之所以(yi)(yi)出現"漂(piao)移(yi)"的(de)(de)(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)，是(shi)(shi)(shi)(shi)因為耦(ou)合電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)式是(shi)(shi)(shi)(shi)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)，它直(zhi)(zhi)接(jie)受溫(wen)度(du)、濕度(du)、手指濕潤程度(du)、人體(ti)體(ti)重、地(di)面干(gan)燥程度(du)影(ying)(ying)響，受外界大(da)面積物體(ti)的(de)(de)(de)(de)(de)(de)(de)(de)干(gan)擾也非(fei)常大(da)，帶來(lai)了(le)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)結果，這(zhe)些(xie)都直(zhi)(zhi)接(jie)違(wei)背了(le)作為觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)這(zhe)種(zhong)坐標(biao)系(xi)統的(de)(de)(de)(de)(de)(de)(de)(de)基本(ben)(ben)要求(qiu)，不(bu)(bu)可避(bi)免的(de)(de)(de)(de)(de)(de)(de)(de)要產生漂(piao)移(yi)，有的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)欲求(qiu)通過(guo)25點(dian)(dian)校準(zhun)法甚至96點(dian)(dian)校準(zhun)法來(lai)解決漂(piao)移(yi)問(wen)(wen)題(ti)，其(qi)實是(shi)(shi)(shi)(shi)不(bu)(bu)可能的(de)(de)(de)(de)(de)(de)(de)(de)，漂(piao)移(yi)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)工(gong)(gong)作的(de)(de)(de)(de)(de)(de)(de)(de)這(zhe)種(zhong)方(fang)式決定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)(shi)在控(kong)制器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)單片程序上利用(yong)動態(tai)計算(suan)和(he)經驗值查表，也只(zhi)(zhi)能是(shi)(shi)(shi)(shi)治標(biao)不(bu)(bu)治本(ben)(ben)。 其(qi)實，多點(dian)(dian)校準(zhun)法最早是(shi)(shi)(shi)(shi)大(da)屏(ping)(ping)(ping)(ping)幕投影(ying)(ying)觸(chu)(chu)摸(mo)(mo)(mo)(mo)板使用(yong)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)法，目(mu)的(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐標(biao)對應的(de)(de)(de)(de)(de)(de)(de)(de)線xing失(shi)真，電(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)線xing失(shi)真也非(fei)常厲害，主要是(shi)(shi)(shi)(shi)因為電(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)計算(suan)建立在四個(ge)電(dian)(dian)(dian)流(liu)量(liang)與觸(chu)(chu)摸(mo)(mo)(mo)(mo)點(dian)(dian)到四個(ge)電(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)(de)(de)(de)理想狀態(tai)上，實際由于(yu)受環境電(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)容(rong)(rong)和(he)不(bu)(bu)同人使用(yong)的(de)(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)響。
