電容觸摸(mo)(mo)屏(ping)的(de)漂移問(wen)題(ti)(ti)。在觸摸(mo)(mo)屏(ping)產(chan)品(pin)(pin)中,電容觸摸(mo)(mo)屏(ping)是我們常用的(de)觸摸(mo)(mo)屏(ping)方式,那么,對于電容觸摸(mo)(mo)屏(ping)來說,其產(chan)品(pin)(pin)本身應用比較(jiao)廣泛,但是也存在著不(bu)少問(wen)題(ti)(ti)。而且(qie)由(you)于現(xian)在科(ke)技的(de)發展程度還(huan)無法完全解決觸摸(mo)(mo)屏(ping)產(chan)品(pin)(pin)在相關原理(li)上出現(xian)的(de)問(wen)題(ti)(ti),所以對于這些問(wen)題(ti)(ti),目(mu)前還(huan)是普遍存在的(de)。
在這(zhe)里武漢(han)公司要跟大家討(tao)論(lun)的(de)是(shi)(shi)(shi)關于(yu)電(dian)容觸(chu)(chu)摸(mo)屏(ping)的(de)"漂移"問(wen)題,這(zhe)個(ge)問(wen)題比較常(chang)見,也(ye)是(shi)(shi)(shi)我們在解決產品問(wen)題時(shi)主要考(kao)慮的(de)方(fang)面。 電(dian)容觸(chu)(chu)摸(mo)屏(ping)的(de)漂移問(wen)題介紹! 武漢(han)觸(chu)(chu)摸(mo)屏(ping)公司提示,電(dian)容觸(chu)(chu)摸(mo)屏(ping)本(ben)身(shen)實(shi)際是(shi)(shi)(shi)一套精密的(de)漏電(dian)傳感器,帶手套的(de)手不(bu)(bu)能觸(chu)(chu)摸(mo),由(you)于(yu)使用(yong)電(dian)容方(fang)式,導致有漂移現(xian)象。電(dian)容觸(chu)(chu)摸(mo)屏(ping)和電(dian)阻觸(chu)(chu)摸(mo)屏(ping)都是(shi)(shi)(shi)電(dian)原理工(gong)作(zuo)方(fang)式,電(dian)工(gong)作(zuo)方(fang)式對于(yu)多(duo)(duo)點(dian)觸(chu)(chu)摸(mo),不(bu)(bu)管(guan)是(shi)(shi)(shi)多(duo)(duo)少點(dian),也(ye)不(bu)(bu)管(guan)是(shi)(shi)(shi)連續的(de)還是(shi)(shi)(shi)不(bu)(bu)連續的(de)都是(shi)(shi)(shi)取多(duo)(duo)點(dian)觸(chu)(chu)摸(mo)的(de)中心點(dian)判斷,因(yin)為電(dian)流疊加是(shi)(shi)(shi)分(fen)不(bu)(bu)出來誰是(shi)(shi)(shi)誰的(de),沒有辦法。
但(dan)是(shi),目前來說(shuo),電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)仍然有(you)不(bu)(bu)少問(wen)題(ti)存(cun)在(zai)。武漢公司信(xin)為,觸(chu)摸(mo)(mo)屏(ping)目前的(de)(de)(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)材(cai)(cai)料ITO--氧(yang)化金屬非(fei)常(chang)脆(cui)弱,觸(chu)摸(mo)(mo)幾(ji)下(xia)就會損(sun)壞,還不(bu)(bu)能(neng)直接用(yong)來作(zuo)(zuo)工作(zuo)(zuo)層(ceng)。材(cai)(cai)料的(de)(de)(de)(de)(de)(de)(de)問(wen)題(ti)一(yi)(yi)時還難以解決(jue),只(zhi)(zhi)好委(wei)曲求全:在(zai)外部增(zeng)加一(yi)(yi)層(ceng)非(fei)常(chang)薄的(de)(de)(de)(de)(de)(de)(de)堅硬玻璃(li)(li),它顯然是(shi)不(bu)(bu)能(neng)導電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de),直流(liu)(liu)是(shi)不(bu)(bu)行(xing)了(le)(le),改用(yong)高頻交(jiao)流(liu)(liu)信(xin)號,靠(kao)人的(de)(de)(de)(de)(de)(de)(de)手指頭(隔(ge)著薄玻璃(li)(li))與工作(zuo)(zuo)面形成(cheng)的(de)(de)(de)(de)(de)(de)(de)耦(ou)合(he)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)來吸走(zou)一(yi)(yi)個(ge)交(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu),這(zhe)(zhe)就是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)"名字(zi)的(de)(de)(de)(de)(de)(de)(de)由(you)來。 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)之(zhi)所(suo)以出現"漂(piao)(piao)移"的(de)(de)(de)(de)(de)(de)(de)問(wen)題(ti),是(shi)因為耦(ou)合(he)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)(de)方(fang)式是(shi)不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de),它直接受(shou)(shou)溫度(du)(du)、濕度(du)(du)、手指濕潤程(cheng)(cheng)度(du)(du)、人體(ti)(ti)體(ti)(ti)重、地面干燥(zao)程(cheng)(cheng)度(du)(du)影(ying)響,受(shou)(shou)外界大(da)面積(ji)物體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)干擾也非(fei)常(chang)大(da),帶(dai)來了(le)(le)不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de)結果,這(zhe)(zhe)些(xie)都直接違(wei)背了(le)(le)作(zuo)(zuo)為觸(chu)摸(mo)(mo)屏(ping)這(zhe)(zhe)種坐標(biao)(biao)系統的(de)(de)(de)(de)(de)(de)(de)基本要求,不(bu)(bu)可避(bi)免(mian)的(de)(de)(de)(de)(de)(de)(de)要產生漂(piao)(piao)移,有(you)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)欲求通過25點校(xiao)準法(fa)甚至(zhi)96點校(xiao)準法(fa)來解決(jue)漂(piao)(piao)移問(wen)題(ti),其實是(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)(de)(de),漂(piao)(piao)移是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)工作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)這(zhe)(zhe)種方(fang)式決(jue)定的(de)(de)(de)(de)(de)(de)(de),即使是(shi)在(zai)控制器的(de)(de)(de)(de)(de)(de)(de)單片程(cheng)(cheng)序上利用(yong)動態計算和經驗(yan)值查表,也只(zhi)(zhi)能(neng)是(shi)治(zhi)標(biao)(biao)不(bu)(bu)治(zhi)本。 其實,多(duo)點校(xiao)準法(fa)最(zui)早是(shi)大(da)屏(ping)幕投影(ying)觸(chu)摸(mo)(mo)板使用(yong)的(de)(de)(de)(de)(de)(de)(de)方(fang)法(fa),目的(de)(de)(de)(de)(de)(de)(de)是(shi)消除坐標(biao)(biao)對應的(de)(de)(de)(de)(de)(de)(de)線xing失真,電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)的(de)(de)(de)(de)(de)(de)(de)線xing失真也非(fei)常(chang)厲(li)害,主要是(shi)因為電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)的(de)(de)(de)(de)(de)(de)(de)計算建立(li)在(zai)四個(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)量與觸(chu)摸(mo)(mo)點到四個(ge)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)(de)距離成(cheng)比(bi)例的(de)(de)(de)(de)(de)(de)(de)理想狀態上,實際(ji)由(you)于受(shou)(shou)環(huan)境(jing)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)同人使用(yong)的(de)(de)(de)(de)(de)(de)(de)影(ying)響。