電(dian)容觸(chu)摸(mo)(mo)屏(ping)的漂移問(wen)題(ti)。在觸(chu)摸(mo)(mo)屏(ping)產(chan)(chan)品中,電(dian)容觸(chu)摸(mo)(mo)屏(ping)是我們常用的觸(chu)摸(mo)(mo)屏(ping)方式(shi),那(nei)么,對(dui)于(yu)(yu)電(dian)容觸(chu)摸(mo)(mo)屏(ping)來說,其產(chan)(chan)品本(ben)身應用比較廣泛,但是也(ye)存在著不少問(wen)題(ti)。而且(qie)由(you)于(yu)(yu)現在科技的發展程度還無(wu)法完全解決(jue)觸(chu)摸(mo)(mo)屏(ping)產(chan)(chan)品在相關原理上出現的問(wen)題(ti),所以對(dui)于(yu)(yu)這些(xie)問(wen)題(ti),目前還是普遍存在的。
在這(zhe)(zhe)里(li)武(wu)漢公(gong)司要跟大(da)家討論的是(shi)(shi)(shi)關于電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)的"漂移(yi)(yi)"問(wen)題,這(zhe)(zhe)個問(wen)題比(bi)較(jiao)常(chang)見,也(ye)是(shi)(shi)(shi)我們在解決(jue)產品問(wen)題時主(zhu)要考慮的方(fang)(fang)面。 電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)的漂移(yi)(yi)問(wen)題介紹! 武(wu)漢觸(chu)(chu)摸(mo)屏(ping)公(gong)司提示,電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)本身實際是(shi)(shi)(shi)一套精密(mi)的漏電(dian)(dian)傳感器(qi),帶手(shou)套的手(shou)不能觸(chu)(chu)摸(mo),由于使(shi)用電(dian)(dian)容(rong)方(fang)(fang)式,導(dao)致有漂移(yi)(yi)現象。電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)和電(dian)(dian)阻觸(chu)(chu)摸(mo)屏(ping)都是(shi)(shi)(shi)電(dian)(dian)原(yuan)理工作方(fang)(fang)式,電(dian)(dian)工作方(fang)(fang)式對于多(duo)(duo)點(dian)(dian)觸(chu)(chu)摸(mo),不管(guan)是(shi)(shi)(shi)多(duo)(duo)少點(dian)(dian),也(ye)不管(guan)是(shi)(shi)(shi)連續的還是(shi)(shi)(shi)不連續的都是(shi)(shi)(shi)取多(duo)(duo)點(dian)(dian)觸(chu)(chu)摸(mo)的中心點(dian)(dian)判斷,因為電(dian)(dian)流(liu)疊加是(shi)(shi)(shi)分不出來(lai)誰是(shi)(shi)(shi)誰的,沒有辦法。
但是(shi)(shi),目(mu)(mu)(mu)前來說,電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏仍然有不少問(wen)題存在。武漢公司信為(wei),觸(chu)(chu)摸(mo)(mo)(mo)屏目(mu)(mu)(mu)前的(de)(de)(de)(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)材料ITO--氧化金屬非(fei)(fei)常脆弱,觸(chu)(chu)摸(mo)(mo)(mo)幾(ji)下就會損壞,還不能(neng)(neng)直接用(yong)(yong)來作(zuo)(zuo)工作(zuo)(zuo)層(ceng)。材料的(de)(de)(de)(de)(de)(de)(de)(de)問(wen)題一時還難以解決(jue),只(zhi)好委(wei)曲(qu)求(qiu)全:在外部增加一層(ceng)非(fei)(fei)常薄(bo)的(de)(de)(de)(de)(de)(de)(de)(de)堅硬玻璃(li)(li),它顯然是(shi)(shi)不能(neng)(neng)導(dao)電(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de),直流(liu)是(shi)(shi)不行(xing)了(le),改(gai)用(yong)(yong)高頻交流(liu)信號,靠人的(de)(de)(de)(de)(de)(de)(de)(de)手指頭(tou)(隔(ge)著薄(bo)玻璃(li)(li))與(yu)工作(zuo)(zuo)面(mian)形成的(de)(de)(de)(de)(de)(de)(de)(de)耦(ou)合(he)電(dian)(dian)(dian)容(rong)來吸走一個(ge)交流(liu)電(dian)(dian)(dian)流(liu),這(zhe)就是(shi)(shi)電(dian)(dian)(dian)容(rong)屏"電(dian)(dian)(dian)容(rong)"名字的(de)(de)(de)(de)(de)(de)(de)(de)由來。 電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏之所以出現"漂(piao)移(yi)(yi)"的(de)(de)(de)(de)(de)(de)(de)(de)問(wen)題,是(shi)(shi)因為(wei)耦(ou)合(he)電(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)不穩定(ding)的(de)(de)(de)(de)(de)(de)(de)(de),它直接受溫度(du)、濕度(du)、手指濕潤(run)程(cheng)(cheng)度(du)、人體體重、地(di)面(mian)干燥程(cheng)(cheng)度(du)影響,受外界大面(mian)積物體的(de)(de)(de)(de)(de)(de)(de)(de)干擾也非(fei)(fei)常大,帶(dai)來了(le)不穩定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)結果,這(zhe)些都(dou)直接違(wei)背了(le)作(zuo)(zuo)為(wei)觸(chu)(chu)摸(mo)(mo)(mo)屏這(zhe)種坐標系(xi)統的(de)(de)(de)(de)(de)(de)(de)(de)基本要(yao)求(qiu),不可避免的(de)(de)(de)(de)(de)(de)(de)(de)要(yao)產生漂(piao)移(yi)(yi),有的(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏欲(yu)求(qiu)通過25點(dian)校(xiao)準法(fa)(fa)甚(shen)至(zhi)96點(dian)校(xiao)準法(fa)(fa)來解決(jue)漂(piao)移(yi)(yi)問(wen)題,其(qi)實(shi)是(shi)(shi)不可能(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)(de),漂(piao)移(yi)(yi)是(shi)(shi)電(dian)(dian)(dian)容(rong)工作(zuo)(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)這(zhe)種方式(shi)決(jue)定(ding)的(de)(de)(de)(de)(de)(de)(de)(de),即使是(shi)(shi)在控(kong)制器的(de)(de)(de)(de)(de)(de)(de)(de)單片(pian)程(cheng)(cheng)序上(shang)利用(yong)(yong)動態計算(suan)和經驗值查表,也只(zhi)能(neng)(neng)是(shi)(shi)治(zhi)標不治(zhi)本。 其(qi)實(shi),多(duo)點(dian)校(xiao)準法(fa)(fa)最(zui)早是(shi)(shi)大屏幕投影觸(chu)(chu)摸(mo)(mo)(mo)板使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)方法(fa)(fa),目(mu)(mu)(mu)的(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)消(xiao)除坐標對應的(de)(de)(de)(de)(de)(de)(de)(de)線(xian)xing失真,電(dian)(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏的(de)(de)(de)(de)(de)(de)(de)(de)線(xian)xing失真也非(fei)(fei)常厲害,主要(yao)是(shi)(shi)因為(wei)電(dian)(dian)(dian)容(rong)屏的(de)(de)(de)(de)(de)(de)(de)(de)計算(suan)建立在四個(ge)電(dian)(dian)(dian)流(liu)量與(yu)觸(chu)(chu)摸(mo)(mo)(mo)點(dian)到四個(ge)電(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)(de)(de)(de)理(li)想狀(zhuang)態上(shang),實(shi)際由于受環境電(dian)(dian)(dian)容(rong)、線(xian)路寄生電(dian)(dian)(dian)容(rong)和不同(tong)人使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)(de)影響。