電容(rong)觸(chu)摸屏(ping)(ping)的(de)漂移問(wen)題。在(zai)(zai)觸(chu)摸屏(ping)(ping)產品中，電容(rong)觸(chu)摸屏(ping)(ping)是(shi)我們常(chang)用(yong)的(de)觸(chu)摸屏(ping)(ping)方式(shi)，那么，對(dui)于(yu)(yu)電容(rong)觸(chu)摸屏(ping)(ping)來說，其產品本身應用(yong)比較廣泛，但是(shi)也存(cun)在(zai)(zai)著不少問(wen)題。而且由于(yu)(yu)現在(zai)(zai)科技的(de)發展(zhan)程度還無法完全解決觸(chu)摸屏(ping)(ping)產品在(zai)(zai)相關(guan)原(yuan)理(li)上出現的(de)問(wen)題，所以對(dui)于(yu)(yu)這些問(wen)題，目前還是(shi)普遍存(cun)在(zai)(zai)的(de)。
在這(zhe)里(li)武漢公司(si)要跟大家討論(lun)的(de)是(shi)關于電(dian)容(rong)觸(chu)摸(mo)屏(ping)的(de)"漂(piao)(piao)移(yi)"問(wen)題，這(zhe)個問(wen)題比較常見，也是(shi)我們在解決產品(pin)問(wen)題時主(zhu)要考慮的(de)方(fang)(fang)面。 電(dian)容(rong)觸(chu)摸(mo)屏(ping)的(de)漂(piao)(piao)移(yi)問(wen)題介紹！ 武漢觸(chu)摸(mo)屏(ping)公司(si)提示，電(dian)容(rong)觸(chu)摸(mo)屏(ping)本(ben)身實際是(shi)一套(tao)精密的(de)漏電(dian)傳感器(qi)，帶手套(tao)的(de)手不(bu)能觸(chu)摸(mo)，由(you)于使(shi)用電(dian)容(rong)方(fang)(fang)式，導致有漂(piao)(piao)移(yi)現象(xiang)。電(dian)容(rong)觸(chu)摸(mo)屏(ping)和(he)電(dian)阻觸(chu)摸(mo)屏(ping)都(dou)是(shi)電(dian)原理工作方(fang)(fang)式，電(dian)工作方(fang)(fang)式對于多(duo)點觸(chu)摸(mo)，不(bu)管是(shi)多(duo)少點，也不(bu)管是(shi)連(lian)續的(de)還是(shi)不(bu)連(lian)續的(de)都(dou)是(shi)取多(duo)點觸(chu)摸(mo)的(de)中(zhong)心點判斷，因為電(dian)流疊加(jia)是(shi)分不(bu)出來(lai)誰(shui)是(shi)誰(shui)的(de)，沒有辦(ban)法。
但是(shi)(shi)(shi)(shi)，目前來(lai)(lai)說，電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)仍然(ran)有(you)不(bu)(bu)少問題存(cun)在(zai)(zai)。武漢公司信(xin)為，觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)目前的(de)(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)(dian)(dian)材料(liao)ITO--氧化金屬非(fei)常(chang)脆弱，觸(chu)(chu)(chu)(chu)摸(mo)幾(ji)下就會損壞，還不(bu)(bu)能(neng)直(zhi)接用(yong)來(lai)(lai)作(zuo)工作(zuo)層(ceng)。材料(liao)的(de)(de)(de)(de)(de)(de)問題一時還難以解(jie)決(jue)，只好委曲求(qiu)全：在(zai)(zai)外部增加一層(ceng)非(fei)常(chang)薄的(de)(de)(de)(de)(de)(de)堅(jian)硬玻璃(li)，它顯然(ran)是(shi)(shi)(shi)(shi)不(bu)(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)，直(zhi)流(liu)(liu)是(shi)(shi)(shi)(shi)不(bu)(bu)行了(le)，改(gai)用(yong)高頻交(jiao)流(liu)(liu)信(xin)號，靠(kao)人的(de)(de)(de)(de)(de)(de)手指頭（隔著薄玻璃(li)）與工作(zuo)面形成(cheng)的(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)來(lai)(lai)吸走一個交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，這就是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)"名(ming)字的(de)(de)(de)(de)(de)(de)由(you)來(lai)(lai)。 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)之所以出現"漂(piao)移"的(de)(de)(de)(de)(de)(de)問題，是(shi)(shi)(shi)(shi)因(yin)為耦合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)(shi)(shi)不(bu)(bu)穩定(ding)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)、人體體重、地(di)面干(gan)燥程(cheng)(cheng)度(du)(du)影響，受(shou)外界大面積(ji)物體的(de)(de)(de)(de)(de)(de)干(gan)擾也(ye)非(fei)常(chang)大，帶來(lai)(lai)了(le)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)結果，這些都直(zhi)接違背了(le)作(zuo)為觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)這種坐標系(xi)統的(de)(de)(de)(de)(de)(de)基本(ben)要求(qiu)，不(bu)(bu)可避(bi)免(mian)的(de)(de)(de)(de)(de)(de)要產生漂(piao)移，有(you)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)欲求(qiu)通過25點(dian)校(xiao)準(zhun)法(fa)(fa)甚至96點(dian)校(xiao)準(zhun)法(fa)(fa)來(lai)(lai)解(jie)決(jue)漂(piao)移問題，其實是(shi)(shi)(shi)(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)(de)，漂(piao)移是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)工作(zuo)的(de)(de)(de)(de)(de)(de)這種方式(shi)決(jue)定(ding)的(de)(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)(shi)在(zai)(zai)控(kong)制器(qi)的(de)(de)(de)(de)(de)(de)單片程(cheng)(cheng)序上利用(yong)動態(tai)計算和經(jing)驗(yan)值查表，也(ye)只能(neng)是(shi)(shi)(shi)(shi)治標不(bu)(bu)治本(ben)。 其實，多點(dian)校(xiao)準(zhun)法(fa)(fa)最早(zao)是(shi)(shi)(shi)(shi)大屏(ping)(ping)(ping)幕投影觸(chu)(chu)(chu)(chu)摸(mo)板使用(yong)的(de)(de)(de)(de)(de)(de)方法(fa)(fa)，目的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除(chu)坐標對應(ying)的(de)(de)(de)(de)(de)(de)線xing失(shi)真(zhen)，電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)線xing失(shi)真(zhen)也(ye)非(fei)常(chang)厲害，主(zhu)要是(shi)(shi)(shi)(shi)因(yin)為電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)計算建立(li)在(zai)(zai)四(si)(si)個電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)量與觸(chu)(chu)(chu)(chu)摸(mo)點(dian)到(dao)四(si)(si)個電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)(de)(de)距離成(cheng)比例的(de)(de)(de)(de)(de)(de)理想狀態(tai)上，實際由(you)于受(shou)環境(jing)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)和不(bu)(bu)同人使用(yong)的(de)(de)(de)(de)(de)(de)影響。
