電容(rong)觸摸(mo)屏的漂移問(wen)(wen)(wen)題(ti)。在(zai)觸摸(mo)屏產(chan)品(pin)(pin)中，電容(rong)觸摸(mo)屏是(shi)我們常用(yong)的觸摸(mo)屏方式，那么，對于電容(rong)觸摸(mo)屏來說，其產(chan)品(pin)(pin)本(ben)身應用(yong)比(bi)較廣泛(fan)，但是(shi)也存(cun)在(zai)著不少(shao)問(wen)(wen)(wen)題(ti)。而(er)且由于現在(zai)科(ke)技(ji)的發展程度還(huan)無法(fa)完全解決觸摸(mo)屏產(chan)品(pin)(pin)在(zai)相關(guan)原理上出(chu)現的問(wen)(wen)(wen)題(ti)，所以對于這些問(wen)(wen)(wen)題(ti)，目前還(huan)是(shi)普遍存(cun)在(zai)的。
在(zai)這里(li)武(wu)漢(han)公(gong)司要(yao)跟大家(jia)討(tao)論的(de)(de)是(shi)(shi)關(guan)于電(dian)(dian)(dian)容(rong)觸(chu)摸屏(ping)的(de)(de)"漂(piao)移(yi)(yi)"問(wen)題，這個問(wen)題比較常見(jian)，也(ye)是(shi)(shi)我們在(zai)解決產品問(wen)題時(shi)主要(yao)考(kao)慮的(de)(de)方面。 電(dian)(dian)(dian)容(rong)觸(chu)摸屏(ping)的(de)(de)漂(piao)移(yi)(yi)問(wen)題介(jie)紹！ 武(wu)漢(han)觸(chu)摸屏(ping)公(gong)司提(ti)示(shi)，電(dian)(dian)(dian)容(rong)觸(chu)摸屏(ping)本(ben)身實(shi)際是(shi)(shi)一套精密的(de)(de)漏電(dian)(dian)(dian)傳感器(qi)，帶手套的(de)(de)手不(bu)能觸(chu)摸，由于使用電(dian)(dian)(dian)容(rong)方式，導致有(you)漂(piao)移(yi)(yi)現象。電(dian)(dian)(dian)容(rong)觸(chu)摸屏(ping)和電(dian)(dian)(dian)阻(zu)觸(chu)摸屏(ping)都是(shi)(shi)電(dian)(dian)(dian)原理工(gong)作(zuo)(zuo)方式，電(dian)(dian)(dian)工(gong)作(zuo)(zuo)方式對于多點觸(chu)摸，不(bu)管是(shi)(shi)多少點，也(ye)不(bu)管是(shi)(shi)連續的(de)(de)還(huan)是(shi)(shi)不(bu)連續的(de)(de)都是(shi)(shi)取多點觸(chu)摸的(de)(de)中心(xin)點判斷，因為電(dian)(dian)(dian)流(liu)疊加是(shi)(shi)分不(bu)出來誰是(shi)(shi)誰的(de)(de)，沒有(you)辦法(fa)。
但(dan)是(shi)(shi)，目前來(lai)說，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸屏(ping)仍然(ran)有不(bu)(bu)(bu)少問題(ti)存在。武漢公司(si)信為(wei)，觸(chu)(chu)(chu)摸屏(ping)目前的(de)(de)(de)透(tou)明導(dao)電(dian)(dian)(dian)(dian)材料ITO--氧化金屬非(fei)常(chang)脆弱，觸(chu)(chu)(chu)摸幾下(xia)就會(hui)損壞，還不(bu)(bu)(bu)能(neng)直(zhi)接(jie)(jie)用(yong)來(lai)作(zuo)工(gong)作(zuo)層(ceng)。材料的(de)(de)(de)問題(ti)一(yi)時還難以(yi)解(jie)決，只(zhi)好(hao)委曲求全：在外部(bu)增加(jia)一(yi)層(ceng)非(fei)常(chang)薄的(de)(de)(de)堅(jian)硬玻璃，它顯然(ran)是(shi)(shi)不(bu)(bu)(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)的(de)(de)(de)，直(zhi)流是(shi)(shi)不(bu)(bu)(bu)行了，改用(yong)高頻交(jiao)流信號，靠人的(de)(de)(de)手指頭（隔著薄玻璃）與工(gong)作(zuo)面(mian)形成的(de)(de)(de)耦(ou)合電(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)吸走一(yi)個(ge)交(jiao)流電(dian)(dian)(dian)(dian)流，這(zhe)就是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)"名(ming)字的(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸屏(ping)之(zhi)所以(yi)出現"漂(piao)移(yi)"的(de)(de)(de)問題(ti)，是(shi)(shi)因(yin)為(wei)耦(ou)合電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)方式是(shi)(shi)不(bu)(bu)(bu)穩定(ding)(ding)的(de)(de)(de)，它直(zhi)接(jie)(jie)受(shou)溫(wen)度(du)(du)、濕(shi)度(du)(du)、手指濕(shi)潤程(cheng)度(du)(du)、人體(ti)體(ti)重、地面(mian)干燥程(cheng)度(du)(du)影(ying)響，受(shou)外界大(da)面(mian)積物體(ti)的(de)(de)(de)干擾也非(fei)常(chang)大(da)，帶來(lai)了不(bu)(bu)(bu)穩定(ding)(ding)的(de)(de)(de)結果，這(zhe)些都直(zhi)接(jie)(jie)違背(bei)了作(zuo)為(wei)觸(chu)(chu)(chu)摸屏(ping)這(zhe)種(zhong)坐(zuo)標(biao)(biao)系(xi)統的(de)(de)(de)基本要求，不(bu)(bu)(bu)可避免(mian)的(de)(de)(de)要產生漂(piao)移(yi)，有的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸屏(ping)欲求通過25點(dian)校準(zhun)(zhun)法(fa)(fa)甚(shen)至(zhi)96點(dian)校準(zhun)(zhun)法(fa)(fa)來(lai)解(jie)決漂(piao)移(yi)問題(ti)，其(qi)實(shi)是(shi)(shi)不(bu)(bu)(bu)可能(neng)的(de)(de)(de)，漂(piao)移(yi)是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作(zuo)的(de)(de)(de)這(zhe)種(zhong)方式決定(ding)(ding)的(de)(de)(de)，即(ji)使是(shi)(shi)在控制器的(de)(de)(de)單(dan)片(pian)程(cheng)序上利用(yong)動態計(ji)算和經驗值查表(biao)，也只(zhi)能(neng)是(shi)(shi)治標(biao)(biao)不(bu)(bu)(bu)治本。 其(qi)實(shi)，多點(dian)校準(zhun)(zhun)法(fa)(fa)最(zui)早(zao)是(shi)(shi)大(da)屏(ping)幕投影(ying)觸(chu)(chu)(chu)摸板使用(yong)的(de)(de)(de)方法(fa)(fa)，目的(de)(de)(de)是(shi)(shi)消除(chu)坐(zuo)標(biao)(biao)對應的(de)(de)(de)線xing失(shi)真(zhen)，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸屏(ping)的(de)(de)(de)線xing失(shi)真(zhen)也非(fei)常(chang)厲害，主要是(shi)(shi)因(yin)為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)的(de)(de)(de)計(ji)算建立在四個(ge)電(dian)(dian)(dian)(dian)流量(liang)與觸(chu)(chu)(chu)摸點(dian)到(dao)四個(ge)電(dian)(dian)(dian)(dian)極的(de)(de)(de)距(ju)離成比例(li)的(de)(de)(de)理想狀態上，實(shi)際由于受(shou)環境電(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)(bu)同人使用(yong)的(de)(de)(de)影(ying)響。
