電(dian)容(rong)觸摸(mo)屏的(de)漂移問(wen)題。在(zai)觸摸(mo)屏產(chan)品(pin)中,電(dian)容(rong)觸摸(mo)屏是我們常用(yong)的(de)觸摸(mo)屏方(fang)式,那么(me),對(dui)于電(dian)容(rong)觸摸(mo)屏來說,其產(chan)品(pin)本身應用(yong)比較廣泛,但是也存在(zai)著不少(shao)問(wen)題。而且由于現在(zai)科技的(de)發展(zhan)程度還(huan)無(wu)法完全(quan)解決觸摸(mo)屏產(chan)品(pin)在(zai)相關(guan)原(yuan)理上(shang)出現的(de)問(wen)題,所以對(dui)于這些問(wen)題,目前還(huan)是普(pu)遍存在(zai)的(de)。
在(zai)這里武(wu)(wu)漢(han)(han)公(gong)司(si)要跟大(da)家討論的(de)(de)(de)是(shi)(shi)關于(yu)電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏的(de)(de)(de)"漂移"問(wen)(wen)題,這個問(wen)(wen)題比較常見,也(ye)是(shi)(shi)我們在(zai)解決(jue)產品問(wen)(wen)題時主要考慮的(de)(de)(de)方(fang)面(mian)。 電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏的(de)(de)(de)漂移問(wen)(wen)題介紹! 武(wu)(wu)漢(han)(han)觸(chu)摸(mo)(mo)屏公(gong)司(si)提示,電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏本身實際是(shi)(shi)一套(tao)精密的(de)(de)(de)漏電(dian)(dian)(dian)(dian)傳感器(qi),帶手(shou)(shou)套(tao)的(de)(de)(de)手(shou)(shou)不(bu)能觸(chu)摸(mo)(mo),由于(yu)使(shi)用電(dian)(dian)(dian)(dian)容(rong)方(fang)式,導致有(you)(you)漂移現象。電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏和電(dian)(dian)(dian)(dian)阻(zu)觸(chu)摸(mo)(mo)屏都是(shi)(shi)電(dian)(dian)(dian)(dian)原理工(gong)作方(fang)式,電(dian)(dian)(dian)(dian)工(gong)作方(fang)式對于(yu)多點觸(chu)摸(mo)(mo),不(bu)管(guan)是(shi)(shi)多少點,也(ye)不(bu)管(guan)是(shi)(shi)連(lian)續的(de)(de)(de)還是(shi)(shi)不(bu)連(lian)續的(de)(de)(de)都是(shi)(shi)取(qu)多點觸(chu)摸(mo)(mo)的(de)(de)(de)中心點判斷(duan),因為電(dian)(dian)(dian)(dian)流(liu)疊加是(shi)(shi)分不(bu)出(chu)來誰是(shi)(shi)誰的(de)(de)(de),沒(mei)有(you)(you)辦法。
但是,目前來(lai)說,電(dian)容(rong)(rong)(rong)(rong)(rong)觸摸(mo)屏仍然有不(bu)(bu)(bu)(bu)(bu)少問(wen)題存在。武漢公司信(xin)為(wei)(wei),觸摸(mo)屏目前的(de)(de)(de)(de)(de)透明導(dao)電(dian)材料ITO--氧化金(jin)屬非常脆弱,觸摸(mo)幾(ji)下就會損壞,還不(bu)(bu)(bu)(bu)(bu)能直接(jie)用(yong)(yong)來(lai)作(zuo)(zuo)工作(zuo)(zuo)層。材料的(de)(de)(de)(de)(de)問(wen)題一(yi)時還難以解(jie)決,只(zhi)好委曲求全:在外部(bu)增加(jia)一(yi)層非常薄(bo)的(de)(de)(de)(de)(de)堅硬玻璃,它顯然是不(bu)(bu)(bu)(bu)(bu)能導(dao)電(dian)的(de)(de)(de)(de)(de),直流(liu)(liu)是不(bu)(bu)(bu)(bu)(bu)行了,改用(yong)(yong)高(gao)頻交(jiao)流(liu)(liu)信(xin)號,靠人的(de)(de)(de)(de)(de)手指頭(隔著薄(bo)玻璃)與工作(zuo)(zuo)面形(xing)成的(de)(de)(de)(de)(de)耦(ou)合(he)電(dian)容(rong)(rong)(rong)(rong)(rong)來(lai)吸走一(yi)個交(jiao)流(liu)(liu)電(dian)流(liu)(liu),這(zhe)(zhe)就是電(dian)容(rong)(rong)(rong)(rong)(rong)屏"電(dian)容(rong)(rong)(rong)(rong)(rong)"名(ming)字的(de)(de)(de)(de)(de)由來(lai)。 電(dian)容(rong)(rong)(rong)(rong)(rong)觸摸(mo)屏之(zhi)所以出現"漂(piao)移(yi)(yi)"的(de)(de)(de)(de)(de)問(wen)題,是因為(wei)(wei)耦(ou)合(he)電(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)方(fang)式(shi)是不(bu)(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de),它直接(jie)受溫度、濕(shi)度、手指濕(shi)潤程度、人體體重、地面干(gan)燥程度影響(xiang),受外界(jie)大(da)面積物體的(de)(de)(de)(de)(de)干(gan)擾(rao)也(ye)非常大(da),帶來(lai)了不(bu)(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)結果,這(zhe)(zhe)些都(dou)直接(jie)違背了作(zuo)(zuo)為(wei)(wei)觸摸(mo)屏這(zhe)(zhe)種坐(zuo)標系統的(de)(de)(de)(de)(de)基本要(yao)(yao)求,不(bu)(bu)(bu)(bu)(bu)可(ke)避(bi)免的(de)(de)(de)(de)(de)要(yao)(yao)產生漂(piao)移(yi)(yi),有的(de)(de)(de)(de)(de)電(dian)容(rong)(rong)(rong)(rong)(rong)觸摸(mo)屏欲求通過25點(dian)校(xiao)準(zhun)(zhun)法(fa)甚至96點(dian)校(xiao)準(zhun)(zhun)法(fa)來(lai)解(jie)決漂(piao)移(yi)(yi)問(wen)題,其(qi)實(shi)(shi)是不(bu)(bu)(bu)(bu)(bu)可(ke)能的(de)(de)(de)(de)(de),漂(piao)移(yi)(yi)是電(dian)容(rong)(rong)(rong)(rong)(rong)工作(zuo)(zuo)的(de)(de)(de)(de)(de)這(zhe)(zhe)種方(fang)式(shi)決定的(de)(de)(de)(de)(de),即(ji)使(shi)是在控(kong)制(zhi)器(qi)的(de)(de)(de)(de)(de)單(dan)片程序(xu)上利用(yong)(yong)動態計(ji)算和(he)(he)經驗值查表(biao),也(ye)只(zhi)能是治標不(bu)(bu)(bu)(bu)(bu)治本。 其(qi)實(shi)(shi),多(duo)點(dian)校(xiao)準(zhun)(zhun)法(fa)最(zui)早是大(da)屏幕投(tou)影觸摸(mo)板使(shi)用(yong)(yong)的(de)(de)(de)(de)(de)方(fang)法(fa),目的(de)(de)(de)(de)(de)是消除坐(zuo)標對(dui)應的(de)(de)(de)(de)(de)線xing失(shi)真,電(dian)容(rong)(rong)(rong)(rong)(rong)觸摸(mo)屏的(de)(de)(de)(de)(de)線xing失(shi)真也(ye)非常厲害,主要(yao)(yao)是因為(wei)(wei)電(dian)容(rong)(rong)(rong)(rong)(rong)屏的(de)(de)(de)(de)(de)計(ji)算建立在四個電(dian)流(liu)(liu)量(liang)與觸摸(mo)點(dian)到四個電(dian)極(ji)的(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)理想(xiang)狀態上,實(shi)(shi)際由于受環(huan)境電(dian)容(rong)(rong)(rong)(rong)(rong)、線路寄生電(dian)容(rong)(rong)(rong)(rong)(rong)和(he)(he)不(bu)(bu)(bu)(bu)(bu)同人使(shi)用(yong)(yong)的(de)(de)(de)(de)(de)影響(xiang)。