電容觸(chu)摸(mo)(mo)(mo)屏(ping)的(de)漂移問題。在(zai)觸(chu)摸(mo)(mo)(mo)屏(ping)產品中，電容觸(chu)摸(mo)(mo)(mo)屏(ping)是我們常用的(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，其產品本身應(ying)用比(bi)較廣泛，但(dan)是也存在(zai)著不(bu)少問題。而且由于現在(zai)科技的(de)發展程(cheng)度還無法完全解決觸(chu)摸(mo)(mo)(mo)屏(ping)產品在(zai)相關(guan)原理上出現的(de)問題，所(suo)以對于這些問題，目前(qian)還是普遍存在(zai)的(de)。
在這里武漢公(gong)司要跟大家討(tao)論(lun)的(de)(de)是(shi)(shi)關于電容(rong)觸(chu)摸(mo)(mo)屏的(de)(de)"漂(piao)(piao)移"問(wen)題(ti)，這個問(wen)題(ti)比較常見，也(ye)是(shi)(shi)我們在解決產品問(wen)題(ti)時主要考慮的(de)(de)方(fang)面。 電容(rong)觸(chu)摸(mo)(mo)屏的(de)(de)漂(piao)(piao)移問(wen)題(ti)介紹(shao)！ 武漢觸(chu)摸(mo)(mo)屏公(gong)司提(ti)示，電容(rong)觸(chu)摸(mo)(mo)屏本身(shen)實際是(shi)(shi)一(yi)套(tao)精密的(de)(de)漏電傳(chuan)感器，帶手套(tao)的(de)(de)手不(bu)能觸(chu)摸(mo)(mo)，由于使用電容(rong)方(fang)式(shi)，導致有(you)(you)漂(piao)(piao)移現象。電容(rong)觸(chu)摸(mo)(mo)屏和電阻觸(chu)摸(mo)(mo)屏都是(shi)(shi)電原理工(gong)作方(fang)式(shi)，電工(gong)作方(fang)式(shi)對于多點(dian)觸(chu)摸(mo)(mo)，不(bu)管(guan)是(shi)(shi)多少點(dian)，也(ye)不(bu)管(guan)是(shi)(shi)連續的(de)(de)還是(shi)(shi)不(bu)連續的(de)(de)都是(shi)(shi)取多點(dian)觸(chu)摸(mo)(mo)的(de)(de)中(zhong)心(xin)點(dian)判斷(duan)，因為(wei)電流疊加是(shi)(shi)分(fen)不(bu)出(chu)來誰是(shi)(shi)誰的(de)(de)，沒有(you)(you)辦法。
但是(shi)(shi)，目前來(lai)說，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)仍然(ran)有(you)不(bu)(bu)(bu)少問題(ti)存在。武漢公司信為(wei)，觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)目前的(de)(de)(de)(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)材料(liao)ITO--氧化金屬非(fei)常(chang)脆弱(ruo)，觸(chu)摸(mo)(mo)幾下就(jiu)會損壞，還(huan)不(bu)(bu)(bu)能(neng)直(zhi)接(jie)用來(lai)作(zuo)(zuo)工(gong)作(zuo)(zuo)層。材料(liao)的(de)(de)(de)(de)(de)(de)(de)(de)問題(ti)一(yi)時還(huan)難(nan)以(yi)解決，只(zhi)好委曲(qu)求全：在外部增加(jia)一(yi)層非(fei)常(chang)薄的(de)(de)(de)(de)(de)(de)(de)(de)堅硬玻璃，它(ta)顯(xian)然(ran)是(shi)(shi)不(bu)(bu)(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)，直(zhi)流(liu)(liu)是(shi)(shi)不(bu)(bu)(bu)行(xing)了(le)，改用高頻(pin)交流(liu)(liu)信號，靠人的(de)(de)(de)(de)(de)(de)(de)(de)手指(zhi)頭(tou)（隔著薄玻璃）與(yu)工(gong)作(zuo)(zuo)面形(xing)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)耦(ou)合電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)吸走(zou)一(yi)個交流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，這就(jiu)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)"名字(zi)的(de)(de)(de)(de)(de)(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)之(zhi)所以(yi)出現(xian)"漂(piao)移"的(de)(de)(de)(de)(de)(de)(de)(de)問題(ti)，是(shi)(shi)因為(wei)耦(ou)合電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)式是(shi)(shi)不(bu)(bu)(bu)穩(wen)定的(de)(de)(de)(de)(de)(de)(de)(de)，它(ta)直(zhi)接(jie)受(shou)溫度、濕度、手指(zhi)濕潤程度、人體體重、地面干燥程度影響，受(shou)外界大(da)面積物(wu)體的(de)(de)(de)(de)(de)(de)(de)(de)干擾也(ye)非(fei)常(chang)大(da)，帶(dai)來(lai)了(le)不(bu)(bu)(bu)穩(wen)定的(de)(de)(de)(de)(de)(de)(de)(de)結果，這些都直(zhi)接(jie)違背了(le)作(zuo)(zuo)為(wei)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)這種坐標系統的(de)(de)(de)(de)(de)(de)(de)(de)基本要求，不(bu)(bu)(bu)可避免(mian)的(de)(de)(de)(de)(de)(de)(de)(de)要產生漂(piao)移，有(you)的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)欲(yu)求通過25點(dian)(dian)校(xiao)準(zhun)(zhun)法(fa)(fa)甚至96點(dian)(dian)校(xiao)準(zhun)(zhun)法(fa)(fa)來(lai)解決漂(piao)移問題(ti)，其實是(shi)(shi)不(bu)(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)(de)(de)(de)，漂(piao)移是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)這種方(fang)式決定的(de)(de)(de)(de)(de)(de)(de)(de)，即使(shi)是(shi)(shi)在控(kong)制器的(de)(de)(de)(de)(de)(de)(de)(de)單片程序上利用動態(tai)(tai)計算(suan)和經驗值(zhi)查表，也(ye)只(zhi)能(neng)是(shi)(shi)治(zhi)(zhi)標不(bu)(bu)(bu)治(zhi)(zhi)本。 其實，多(duo)點(dian)(dian)校(xiao)準(zhun)(zhun)法(fa)(fa)最(zui)早是(shi)(shi)大(da)屏(ping)(ping)(ping)幕投影觸(chu)摸(mo)(mo)板使(shi)用的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)法(fa)(fa)，目的(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)消除(chu)坐標對應的(de)(de)(de)(de)(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)線xing失真也(ye)非(fei)常(chang)厲害，主要是(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)(de)計算(suan)建立在四(si)個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)量與(yu)觸(chu)摸(mo)(mo)點(dian)(dian)到四(si)個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)的(de)(de)(de)(de)(de)(de)(de)(de)距離(li)成(cheng)比例的(de)(de)(de)(de)(de)(de)(de)(de)理(li)想狀態(tai)(tai)上，實際(ji)由于受(shou)環境電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄(ji)生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)(bu)同人使(shi)用的(de)(de)(de)(de)(de)(de)(de)(de)影響。
