電容觸摸(mo)屏(ping)(ping)的漂移問題。在(zai)觸摸(mo)屏(ping)(ping)產(chan)品中(zhong)，電容觸摸(mo)屏(ping)(ping)是(shi)我們常用的觸摸(mo)屏(ping)(ping)方式，那(nei)么(me)，對于(yu)(yu)電容觸摸(mo)屏(ping)(ping)來說(shuo)，其產(chan)品本身應用比較(jiao)廣泛，但(dan)是(shi)也存(cun)在(zai)著不少問題。而且由于(yu)(yu)現(xian)在(zai)科技的發展(zhan)程度還(huan)無法完全解(jie)決觸摸(mo)屏(ping)(ping)產(chan)品在(zai)相關原理上出(chu)現(xian)的問題，所(suo)以對于(yu)(yu)這些問題，目前還(huan)是(shi)普遍存(cun)在(zai)的。
在這里武漢公司要(yao)跟大家討(tao)論的是(shi)(shi)關于電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的"漂移"問題(ti)，這個問題(ti)比(bi)較常見，也(ye)是(shi)(shi)我(wo)們在解決產品問題(ti)時主要(yao)考慮(lv)的方面。 電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)的漂移問題(ti)介紹！ 武漢觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)公司提示，電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)本身實際是(shi)(shi)一(yi)套精密(mi)的漏電(dian)傳感器(qi)，帶手(shou)套的手(shou)不(bu)(bu)(bu)能(neng)觸(chu)(chu)(chu)摸(mo)(mo)，由(you)于使用電(dian)容(rong)方式，導致有漂移現象。電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)和電(dian)阻觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)都(dou)是(shi)(shi)電(dian)原理工(gong)(gong)作(zuo)方式，電(dian)工(gong)(gong)作(zuo)方式對(dui)于多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)，不(bu)(bu)(bu)管(guan)是(shi)(shi)多(duo)少(shao)點(dian)，也(ye)不(bu)(bu)(bu)管(guan)是(shi)(shi)連(lian)續(xu)的還是(shi)(shi)不(bu)(bu)(bu)連(lian)續(xu)的都(dou)是(shi)(shi)取(qu)多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)的中心點(dian)判斷，因為電(dian)流疊加是(shi)(shi)分(fen)不(bu)(bu)(bu)出來誰(shui)是(shi)(shi)誰(shui)的，沒有辦法。
但是(shi)(shi)(shi)(shi)(shi)，目(mu)(mu)前來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)仍(reng)然(ran)有(you)不(bu)(bu)(bu)少問(wen)(wen)題(ti)(ti)存(cun)在(zai)。武漢公司信為，觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)目(mu)(mu)前的(de)(de)(de)(de)(de)透明(ming)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料ITO--氧化(hua)金屬非常脆弱，觸(chu)(chu)摸(mo)(mo)(mo)幾下就會損壞，還不(bu)(bu)(bu)能(neng)直接用來(lai)作(zuo)工(gong)作(zuo)層。材(cai)料的(de)(de)(de)(de)(de)問(wen)(wen)題(ti)(ti)一時還難以(yi)解決(jue)，只好(hao)委曲求(qiu)全：在(zai)外部增加(jia)一層非常薄的(de)(de)(de)(de)(de)堅硬玻璃，它顯然(ran)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)，直流(liu)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)行(xing)了，改用高(gao)頻交流(liu)信號，靠人(ren)(ren)的(de)(de)(de)(de)(de)手(shou)指(zhi)頭（隔(ge)著(zhu)薄玻璃）與(yu)工(gong)作(zuo)面(mian)形成的(de)(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)來(lai)吸走(zou)一個(ge)交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這(zhe)就是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)"名(ming)字的(de)(de)(de)(de)(de)由(you)來(lai)。 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)之所以(yi)出(chu)現"漂移(yi)"的(de)(de)(de)(de)(de)問(wen)(wen)題(ti)(ti)，是(shi)(shi)(shi)(shi)(shi)因(yin)為耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)方(fang)式(shi)(shi)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)，它直接受(shou)溫度(du)(du)、濕度(du)(du)、手(shou)指(zhi)濕潤程度(du)(du)、人(ren)(ren)體體重、地面(mian)干燥(zao)程度(du)(du)影(ying)(ying)響，受(shou)外界大(da)面(mian)積物體的(de)(de)(de)(de)(de)干擾也(ye)非常大(da)，帶來(lai)了不(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)結果(guo)，這(zhe)些都直接違背了作(zuo)為觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)這(zhe)種坐標系統的(de)(de)(de)(de)(de)基本(ben)要(yao)(yao)(yao)求(qiu)，不(bu)(bu)(bu)可避免的(de)(de)(de)(de)(de)要(yao)(yao)(yao)產生(sheng)漂移(yi)，有(you)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)欲(yu)求(qiu)通過25點(dian)(dian)校(xiao)準法甚至96點(dian)(dian)校(xiao)準法來(lai)解決(jue)漂移(yi)問(wen)(wen)題(ti)(ti)，其(qi)實(shi)(shi)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)，漂移(yi)是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)工(gong)作(zuo)的(de)(de)(de)(de)(de)這(zhe)種方(fang)式(shi)(shi)決(jue)定的(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)(shi)(shi)在(zai)控制器的(de)(de)(de)(de)(de)單片程序上利(li)用動(dong)態(tai)計算和(he)經驗值查表，也(ye)只能(neng)是(shi)(shi)(shi)(shi)(shi)治標不(bu)(bu)(bu)治本(ben)。 其(qi)實(shi)(shi)，多點(dian)(dian)校(xiao)準法最早是(shi)(shi)(shi)(shi)(shi)大(da)屏(ping)(ping)(ping)幕投(tou)影(ying)(ying)觸(chu)(chu)摸(mo)(mo)(mo)板(ban)使用的(de)(de)(de)(de)(de)方(fang)法，目(mu)(mu)的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)消除坐標對應的(de)(de)(de)(de)(de)線(xian)xing失真，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)線(xian)xing失真也(ye)非常厲害，主要(yao)(yao)(yao)是(shi)(shi)(shi)(shi)(shi)因(yin)為電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)計算建立在(zai)四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量與(yu)觸(chu)(chu)摸(mo)(mo)(mo)點(dian)(dian)到四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)理(li)想狀態(tai)上，實(shi)(shi)際由(you)于(yu)受(shou)環(huan)境電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、線(xian)路寄生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)和(he)不(bu)(bu)(bu)同(tong)人(ren)(ren)使用的(de)(de)(de)(de)(de)影(ying)(ying)響。
