電容觸(chu)摸(mo)(mo)(mo)屏(ping)的(de)(de)(de)漂移問(wen)題(ti)(ti)(ti)。在觸(chu)摸(mo)(mo)(mo)屏(ping)產品(pin)中，電容觸(chu)摸(mo)(mo)(mo)屏(ping)是我們常用(yong)的(de)(de)(de)觸(chu)摸(mo)(mo)(mo)屏(ping)方式，那么，對于電容觸(chu)摸(mo)(mo)(mo)屏(ping)來說(shuo)，其(qi)產品(pin)本身(shen)應用(yong)比較(jiao)廣泛，但(dan)是也存在著不少(shao)問(wen)題(ti)(ti)(ti)。而且由于現在科技的(de)(de)(de)發展程度(du)還無法完全(quan)解決觸(chu)摸(mo)(mo)(mo)屏(ping)產品(pin)在相(xiang)關原(yuan)理上出(chu)現的(de)(de)(de)問(wen)題(ti)(ti)(ti)，所以對于這些(xie)問(wen)題(ti)(ti)(ti)，目前還是普遍存在的(de)(de)(de)。
在(zai)這(zhe)里武漢(han)公司要(yao)跟大家(jia)討論的(de)是(shi)(shi)(shi)關于電(dian)(dian)容觸摸屏的(de)"漂(piao)移(yi)"問(wen)題，這(zhe)個問(wen)題比較常(chang)見，也(ye)(ye)是(shi)(shi)(shi)我們在(zai)解決產品問(wen)題時主(zhu)要(yao)考慮的(de)方(fang)(fang)面。 電(dian)(dian)容觸摸屏的(de)漂(piao)移(yi)問(wen)題介紹！ 武漢(han)觸摸屏公司提示，電(dian)(dian)容觸摸屏本身實際是(shi)(shi)(shi)一套精(jing)密的(de)漏電(dian)(dian)傳感器，帶手套的(de)手不(bu)能觸摸，由于使用電(dian)(dian)容方(fang)(fang)式，導致(zhi)有漂(piao)移(yi)現象。電(dian)(dian)容觸摸屏和電(dian)(dian)阻觸摸屏都是(shi)(shi)(shi)電(dian)(dian)原(yuan)理工作方(fang)(fang)式，電(dian)(dian)工作方(fang)(fang)式對于多(duo)(duo)點觸摸，不(bu)管是(shi)(shi)(shi)多(duo)(duo)少點，也(ye)(ye)不(bu)管是(shi)(shi)(shi)連(lian)續的(de)還是(shi)(shi)(shi)不(bu)連(lian)續的(de)都是(shi)(shi)(shi)取多(duo)(duo)點觸摸的(de)中心點判斷，因為電(dian)(dian)流疊加是(shi)(shi)(shi)分不(bu)出來誰是(shi)(shi)(shi)誰的(de)，沒有辦法。
但是(shi)(shi)(shi)，目前(qian)來(lai)(lai)說(shuo)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏仍然有不(bu)(bu)(bu)少(shao)問(wen)題(ti)(ti)存在(zai)。武漢公(gong)司信(xin)為(wei)，觸(chu)(chu)(chu)摸(mo)屏目前(qian)的(de)(de)(de)(de)(de)(de)(de)透明(ming)導電(dian)(dian)(dian)(dian)材料ITO--氧化金屬非(fei)(fei)(fei)常脆弱，觸(chu)(chu)(chu)摸(mo)幾下就會損壞，還不(bu)(bu)(bu)能直(zhi)(zhi)接用(yong)(yong)來(lai)(lai)作工作層。材料的(de)(de)(de)(de)(de)(de)(de)問(wen)題(ti)(ti)一時(shi)還難(nan)以解決(jue)(jue)，只(zhi)好委曲(qu)求全：在(zai)外(wai)部增加(jia)一層非(fei)(fei)(fei)常薄的(de)(de)(de)(de)(de)(de)(de)堅硬玻璃，它(ta)顯(xian)然是(shi)(shi)(shi)不(bu)(bu)(bu)能導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)，直(zhi)(zhi)流是(shi)(shi)(shi)不(bu)(bu)(bu)行了，改用(yong)(yong)高(gao)頻(pin)交流信(xin)號，靠(kao)人(ren)的(de)(de)(de)(de)(de)(de)(de)手(shou)(shou)指頭(tou)（隔著薄玻璃）與(yu)(yu)工作面(mian)形成(cheng)(cheng)的(de)(de)(de)(de)(de)(de)(de)耦(ou)(ou)合電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)(lai)吸走一個交流電(dian)(dian)(dian)(dian)流，這(zhe)就是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏"電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)(de)(de)(de)由來(lai)(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏之所以出現(xian)"漂移(yi)"的(de)(de)(de)(de)(de)(de)(de)問(wen)題(ti)(ti)，是(shi)(shi)(shi)因為(wei)耦(ou)(ou)合電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)式是(shi)(shi)(shi)不(bu)(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)(de)，它(ta)直(zhi)(zhi)接受(shou)溫度、濕度、手(shou)(shou)指濕潤程度、人(ren)體體重、地面(mian)干燥程度影(ying)(ying)響(xiang)，受(shou)外(wai)界大(da)面(mian)積物體的(de)(de)(de)(de)(de)(de)(de)干擾也(ye)非(fei)(fei)(fei)常大(da)，帶來(lai)(lai)了不(bu)(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)(de)結果(guo)，這(zhe)些都直(zhi)(zhi)接違背(bei)了作為(wei)觸(chu)(chu)(chu)摸(mo)屏這(zhe)種坐(zuo)標系統的(de)(de)(de)(de)(de)(de)(de)基本要求，不(bu)(bu)(bu)可(ke)避免的(de)(de)(de)(de)(de)(de)(de)要產生漂移(yi)，有的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏欲求通過25點(dian)(dian)校(xiao)準法甚至96點(dian)(dian)校(xiao)準法來(lai)(lai)解決(jue)(jue)漂移(yi)問(wen)題(ti)(ti)，其(qi)實是(shi)(shi)(shi)不(bu)(bu)(bu)可(ke)能的(de)(de)(de)(de)(de)(de)(de)，漂移(yi)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工作的(de)(de)(de)(de)(de)(de)(de)這(zhe)種方(fang)(fang)式決(jue)(jue)定(ding)的(de)(de)(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)在(zai)控制器的(de)(de)(de)(de)(de)(de)(de)單片程序上利用(yong)(yong)動態計算和(he)經驗值查表，也(ye)只(zhi)能是(shi)(shi)(shi)治標不(bu)(bu)(bu)治本。 其(qi)實，多點(dian)(dian)校(xiao)準法最(zui)早是(shi)(shi)(shi)大(da)屏幕投影(ying)(ying)觸(chu)(chu)(chu)摸(mo)板使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)法，目的(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)消除坐(zuo)標對應的(de)(de)(de)(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏的(de)(de)(de)(de)(de)(de)(de)線xing失真也(ye)非(fei)(fei)(fei)常厲害，主要是(shi)(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏的(de)(de)(de)(de)(de)(de)(de)計算建立在(zai)四(si)個電(dian)(dian)(dian)(dian)流量與(yu)(yu)觸(chu)(chu)(chu)摸(mo)點(dian)(dian)到四(si)個電(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)(de)(de)(de)距(ju)離成(cheng)(cheng)比例的(de)(de)(de)(de)(de)(de)(de)理想(xiang)狀態上，實際(ji)由于受(shou)環(huan)境(jing)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和(he)不(bu)(bu)(bu)同人(ren)使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)響(xiang)。
