電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)屏(ping)的(de)(de)(de)漂移(yi)問題。在(zai)觸(chu)(chu)摸(mo)(mo)屏(ping)產品(pin)中(zhong)，電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)屏(ping)是(shi)我們常用的(de)(de)(de)觸(chu)(chu)摸(mo)(mo)屏(ping)方式，那么，對于(yu)電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)屏(ping)來(lai)說，其產品(pin)本身應用比較廣泛，但是(shi)也存在(zai)著不少問題。而且(qie)由于(yu)現(xian)在(zai)科技的(de)(de)(de)發展程度還無法完(wan)全(quan)解決觸(chu)(chu)摸(mo)(mo)屏(ping)產品(pin)在(zai)相關原理上出現(xian)的(de)(de)(de)問題，所以對于(yu)這些問題，目前(qian)還是(shi)普遍(bian)存在(zai)的(de)(de)(de)。
在(zai)這里(li)武漢公(gong)司要跟大家討論(lun)的(de)(de)是(shi)(shi)(shi)關于電(dian)容觸(chu)摸(mo)屏的(de)(de)"漂(piao)移"問(wen)題(ti)(ti)(ti)，這個問(wen)題(ti)(ti)(ti)比(bi)較常見，也(ye)是(shi)(shi)(shi)我(wo)們在(zai)解決產品問(wen)題(ti)(ti)(ti)時主(zhu)要考慮的(de)(de)方(fang)(fang)面。 電(dian)容觸(chu)摸(mo)屏的(de)(de)漂(piao)移問(wen)題(ti)(ti)(ti)介(jie)紹！ 武漢觸(chu)摸(mo)屏公(gong)司提(ti)示，電(dian)容觸(chu)摸(mo)屏本(ben)身實際是(shi)(shi)(shi)一套精密的(de)(de)漏電(dian)傳(chuan)感器，帶手套的(de)(de)手不能(neng)觸(chu)摸(mo)，由于使用電(dian)容方(fang)(fang)式，導致有(you)漂(piao)移現象(xiang)。電(dian)容觸(chu)摸(mo)屏和電(dian)阻觸(chu)摸(mo)屏都是(shi)(shi)(shi)電(dian)原(yuan)理工作方(fang)(fang)式，電(dian)工作方(fang)(fang)式對于多點(dian)觸(chu)摸(mo)，不管(guan)是(shi)(shi)(shi)多少點(dian)，也(ye)不管(guan)是(shi)(shi)(shi)連(lian)續(xu)的(de)(de)還是(shi)(shi)(shi)不連(lian)續(xu)的(de)(de)都是(shi)(shi)(shi)取多點(dian)觸(chu)摸(mo)的(de)(de)中心點(dian)判斷，因為電(dian)流(liu)疊加(jia)是(shi)(shi)(shi)分(fen)不出來(lai)誰(shui)(shui)是(shi)(shi)(shi)誰(shui)(shui)的(de)(de)，沒有(you)辦法(fa)。
但是，目(mu)前來說(shuo)，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)仍(reng)然有不(bu)(bu)(bu)少問(wen)題(ti)存在(zai)。武漢公司信為，觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)目(mu)前的(de)(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)(dian)材料ITO--氧(yang)化金(jin)屬非(fei)常脆弱，觸(chu)(chu)(chu)摸(mo)(mo)(mo)幾下就會(hui)損壞，還不(bu)(bu)(bu)能(neng)直(zhi)接(jie)用(yong)(yong)來作工(gong)作層(ceng)。材料的(de)(de)(de)問(wen)題(ti)一時還難以解(jie)決(jue)，只好(hao)委曲(qu)求(qiu)(qiu)全：在(zai)外部增加一層(ceng)非(fei)常薄(bo)(bo)的(de)(de)(de)堅硬玻(bo)璃，它(ta)顯然是不(bu)(bu)(bu)能(neng)導電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)，直(zhi)流(liu)是不(bu)(bu)(bu)行了(le)，改(gai)用(yong)(yong)高頻交(jiao)流(liu)信號，靠人的(de)(de)(de)手(shou)指頭（隔著(zhu)薄(bo)(bo)玻(bo)璃）與工(gong)作面(mian)形成的(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)來吸走一個(ge)交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這(zhe)就是電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)"名字的(de)(de)(de)由來。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)之所(suo)以出現(xian)"漂(piao)移"的(de)(de)(de)問(wen)題(ti)，是因為耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)方式(shi)是不(bu)(bu)(bu)穩(wen)定(ding)的(de)(de)(de)，它(ta)直(zhi)接(jie)受溫度、濕(shi)度、手(shou)指濕(shi)潤(run)程度、人體體重、地面(mian)干燥程度影響，受外界大(da)面(mian)積物體的(de)(de)(de)干擾也非(fei)常大(da)，帶來了(le)不(bu)(bu)(bu)穩(wen)定(ding)的(de)(de)(de)結(jie)果，這(zhe)些都直(zhi)接(jie)違背了(le)作為觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)這(zhe)種坐(zuo)標系統的(de)(de)(de)基(ji)本(ben)要(yao)求(qiu)(qiu)，不(bu)(bu)(bu)可(ke)避免的(de)(de)(de)要(yao)產生漂(piao)移，有的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)欲求(qiu)(qiu)通過(guo)25點(dian)校(xiao)準(zhun)法甚至96點(dian)校(xiao)準(zhun)法來解(jie)決(jue)漂(piao)移問(wen)題(ti)，其實是不(bu)(bu)(bu)可(ke)能(neng)的(de)(de)(de)，漂(piao)移是電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)工(gong)作的(de)(de)(de)這(zhe)種方式(shi)決(jue)定(ding)的(de)(de)(de)，即使是在(zai)控制(zhi)器(qi)的(de)(de)(de)單(dan)片(pian)程序上利(li)用(yong)(yong)動態(tai)計算和(he)經驗(yan)值查表(biao)，也只能(neng)是治(zhi)標不(bu)(bu)(bu)治(zhi)本(ben)。 其實，多(duo)點(dian)校(xiao)準(zhun)法最早是大(da)屏(ping)(ping)幕投(tou)影觸(chu)(chu)(chu)摸(mo)(mo)(mo)板使用(yong)(yong)的(de)(de)(de)方法，目(mu)的(de)(de)(de)是消除坐(zuo)標對應的(de)(de)(de)線xing失(shi)真(zhen)，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)(de)線xing失(shi)真(zhen)也非(fei)常厲害，主要(yao)是因為電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)的(de)(de)(de)計算建立在(zai)四(si)(si)個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量與觸(chu)(chu)(chu)摸(mo)(mo)(mo)點(dian)到四(si)(si)個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)距離成比(bi)例的(de)(de)(de)理想狀態(tai)上，實際由于受環境電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、線路(lu)寄生電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)和(he)不(bu)(bu)(bu)同人使用(yong)(yong)的(de)(de)(de)影響。
