電容(rong)觸摸屏(ping)的漂移問題。在(zai)觸摸屏(ping)產(chan)品(pin)中(zhong)，電容(rong)觸摸屏(ping)是我(wo)們常用的觸摸屏(ping)方式，那么，對(dui)于(yu)電容(rong)觸摸屏(ping)來說，其(qi)產(chan)品(pin)本身應用比(bi)較廣(guang)泛(fan)，但是也存在(zai)著(zhu)不少問題。而且由于(yu)現在(zai)科技的發展程度還無法完全解(jie)決(jue)觸摸屏(ping)產(chan)品(pin)在(zai)相關原理上出現的問題，所以(yi)對(dui)于(yu)這些問題，目前還是普遍存在(zai)的。
在這里武漢公司要(yao)跟大(da)家(jia)討(tao)論(lun)的(de)是(shi)(shi)關(guan)于(yu)電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的(de)"漂移"問題，這個(ge)問題比較常見，也是(shi)(shi)我們在解(jie)決產品問題時主(zhu)要(yao)考慮的(de)方(fang)面。 電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的(de)漂移問題介紹！ 武漢觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)公司提示，電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)本身(shen)實際是(shi)(shi)一套(tao)精(jing)密的(de)漏電(dian)(dian)(dian)傳(chuan)感器，帶手套(tao)的(de)手不(bu)(bu)能(neng)觸(chu)(chu)(chu)(chu)摸(mo)(mo)，由于(yu)使用電(dian)(dian)(dian)容方(fang)式(shi)(shi)，導致(zhi)有漂移現象。電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)和(he)電(dian)(dian)(dian)阻(zu)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)都是(shi)(shi)電(dian)(dian)(dian)原理工作方(fang)式(shi)(shi)，電(dian)(dian)(dian)工作方(fang)式(shi)(shi)對(dui)于(yu)多點(dian)觸(chu)(chu)(chu)(chu)摸(mo)(mo)，不(bu)(bu)管(guan)(guan)是(shi)(shi)多少點(dian)，也不(bu)(bu)管(guan)(guan)是(shi)(shi)連(lian)續(xu)的(de)還是(shi)(shi)不(bu)(bu)連(lian)續(xu)的(de)都是(shi)(shi)取多點(dian)觸(chu)(chu)(chu)(chu)摸(mo)(mo)的(de)中心點(dian)判(pan)斷，因為電(dian)(dian)(dian)流疊(die)加(jia)是(shi)(shi)分不(bu)(bu)出來(lai)誰(shui)是(shi)(shi)誰(shui)的(de)，沒有辦法。
但是(shi)(shi)，目(mu)前來(lai)說，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)仍然有(you)不少問題(ti)存在(zai)。武漢公司信為(wei)，觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)目(mu)前的(de)(de)透明導電(dian)(dian)(dian)(dian)材(cai)料ITO--氧化金屬非常脆弱，觸(chu)摸(mo)(mo)(mo)(mo)幾下(xia)就會損壞(huai)，還不能直(zhi)接(jie)用(yong)(yong)來(lai)作(zuo)工作(zuo)層。材(cai)料的(de)(de)問題(ti)一(yi)(yi)時還難以(yi)解決，只(zhi)好委曲求全：在(zai)外部增(zeng)加一(yi)(yi)層非常薄的(de)(de)堅硬玻璃(li)，它顯(xian)然是(shi)(shi)不能導電(dian)(dian)(dian)(dian)的(de)(de)，直(zhi)流是(shi)(shi)不行了，改(gai)用(yong)(yong)高頻(pin)交流信號，靠(kao)人(ren)的(de)(de)手(shou)指頭(tou)（隔(ge)著薄玻璃(li)）與工作(zuo)面形成的(de)(de)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)吸走一(yi)(yi)個(ge)(ge)交流電(dian)(dian)(dian)(dian)流，這就是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名(ming)字(zi)的(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)之所(suo)以(yi)出現"漂移(yi)"的(de)(de)問題(ti)，是(shi)(shi)因(yin)為(wei)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)方式是(shi)(shi)不穩定(ding)(ding)的(de)(de)，它直(zhi)接(jie)受(shou)溫度、濕(shi)度、手(shou)指濕(shi)潤(run)程(cheng)度、人(ren)體體重、地面干燥程(cheng)度影響，受(shou)外界大(da)(da)面積物體的(de)(de)干擾也非常大(da)(da)，帶來(lai)了不穩定(ding)(ding)的(de)(de)結果(guo)，這些都(dou)直(zhi)接(jie)違(wei)背了作(zuo)為(wei)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)這種(zhong)坐標系(xi)統的(de)(de)基本(ben)要(yao)求，不可避免的(de)(de)要(yao)產生漂移(yi)，有(you)的(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)欲求通(tong)過25點(dian)(dian)校(xiao)準(zhun)法甚至96點(dian)(dian)校(xiao)準(zhun)法來(lai)解決漂移(yi)問題(ti)，其實是(shi)(shi)不可能的(de)(de)，漂移(yi)是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工作(zuo)的(de)(de)這種(zhong)方式決定(ding)(ding)的(de)(de)，即使是(shi)(shi)在(zai)控制器的(de)(de)單片程(cheng)序上利用(yong)(yong)動態(tai)計(ji)算和(he)經驗值查表，也只(zhi)能是(shi)(shi)治(zhi)標不治(zhi)本(ben)。 其實，多(duo)點(dian)(dian)校(xiao)準(zhun)法最早是(shi)(shi)大(da)(da)屏(ping)(ping)幕投影觸(chu)摸(mo)(mo)(mo)(mo)板使用(yong)(yong)的(de)(de)方法，目(mu)的(de)(de)是(shi)(shi)消除坐標對(dui)應的(de)(de)線(xian)(xian)(xian)xing失真(zhen)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)的(de)(de)線(xian)(xian)(xian)xing失真(zhen)也非常厲害，主要(yao)是(shi)(shi)因(yin)為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)的(de)(de)計(ji)算建立在(zai)四個(ge)(ge)電(dian)(dian)(dian)(dian)流量與觸(chu)摸(mo)(mo)(mo)(mo)點(dian)(dian)到四個(ge)(ge)電(dian)(dian)(dian)(dian)極的(de)(de)距離成比(bi)例(li)的(de)(de)理(li)想狀態(tai)上，實際由于(yu)受(shou)環境(jing)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線(xian)(xian)(xian)路(lu)寄生電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和(he)不同人(ren)使用(yong)(yong)的(de)(de)影響。
