電(dian)容觸摸屏(ping)(ping)(ping)的漂(piao)移問(wen)題(ti)(ti)。在(zai)觸摸屏(ping)(ping)(ping)產品(pin)(pin)中,電(dian)容觸摸屏(ping)(ping)(ping)是(shi)我們常用的觸摸屏(ping)(ping)(ping)方(fang)式,那么(me),對于電(dian)容觸摸屏(ping)(ping)(ping)來說,其產品(pin)(pin)本(ben)身應用比(bi)較廣泛,但是(shi)也存在(zai)著不少問(wen)題(ti)(ti)。而(er)且由于現在(zai)科技的發展程度還無法(fa)完全解決觸摸屏(ping)(ping)(ping)產品(pin)(pin)在(zai)相關原(yuan)理上出(chu)現的問(wen)題(ti)(ti),所以對于這些問(wen)題(ti)(ti),目前(qian)還是(shi)普遍存在(zai)的。
在(zai)這(zhe)里武漢公司要跟(gen)大家討論的(de)(de)是(shi)(shi)關(guan)于(yu)電(dian)容觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)"漂(piao)移"問題,這(zhe)個問題比較常(chang)見(jian),也是(shi)(shi)我們在(zai)解(jie)決產品問題時主要考慮的(de)(de)方(fang)(fang)(fang)面。 電(dian)容觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)漂(piao)移問題介(jie)紹! 武漢觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)公司提示,電(dian)容觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)本身實際(ji)是(shi)(shi)一(yi)套(tao)精密的(de)(de)漏電(dian)傳感器,帶手套(tao)的(de)(de)手不能(neng)觸(chu)(chu)(chu)摸(mo)(mo)(mo),由(you)于(yu)使用電(dian)容方(fang)(fang)(fang)式(shi)(shi),導致有(you)漂(piao)移現象。電(dian)容觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)和電(dian)阻觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)都(dou)是(shi)(shi)電(dian)原理工作方(fang)(fang)(fang)式(shi)(shi),電(dian)工作方(fang)(fang)(fang)式(shi)(shi)對于(yu)多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)(mo),不管是(shi)(shi)多(duo)少(shao)點(dian),也不管是(shi)(shi)連續的(de)(de)還(huan)是(shi)(shi)不連續的(de)(de)都(dou)是(shi)(shi)取多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)(mo)的(de)(de)中心點(dian)判斷,因為電(dian)流疊(die)加是(shi)(shi)分不出來誰是(shi)(shi)誰的(de)(de),沒有(you)辦法。
但是(shi)(shi)(shi)(shi)(shi),目(mu)前(qian)來(lai)(lai)說(shuo),電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)仍(reng)然(ran)有不少問(wen)題存(cun)在(zai)(zai)。武漢(han)公司信(xin)為,觸摸(mo)(mo)屏(ping)(ping)目(mu)前(qian)的(de)(de)(de)(de)(de)透(tou)明導電(dian)(dian)(dian)材(cai)料ITO--氧化金屬非(fei)常(chang)脆弱,觸摸(mo)(mo)幾(ji)下就(jiu)會損壞,還(huan)不能(neng)直(zhi)接用(yong)(yong)(yong)來(lai)(lai)作工作層(ceng)。材(cai)料的(de)(de)(de)(de)(de)問(wen)題一時(shi)還(huan)難以(yi)解決,只(zhi)好委曲(qu)求全(quan):在(zai)(zai)外(wai)部增加一層(ceng)非(fei)常(chang)薄的(de)(de)(de)(de)(de)堅硬玻(bo)璃,它(ta)顯然(ran)是(shi)(shi)(shi)(shi)(shi)不能(neng)導電(dian)(dian)(dian)的(de)(de)(de)(de)(de),直(zhi)流是(shi)(shi)(shi)(shi)(shi)不行了,改用(yong)(yong)(yong)高頻交流信(xin)號,靠人(ren)的(de)(de)(de)(de)(de)手(shou)指(zhi)頭(隔著薄玻(bo)璃)與工作面(mian)形成的(de)(de)(de)(de)(de)耦(ou)合(he)(he)電(dian)(dian)(dian)容(rong)(rong)來(lai)(lai)吸(xi)走一個交流電(dian)(dian)(dian)流,這(zhe)就(jiu)是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)(de)(de)由(you)(you)來(lai)(lai)。 電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)之所以(yi)出現(xian)"漂移"的(de)(de)(de)(de)(de)問(wen)題,是(shi)(shi)(shi)(shi)(shi)因(yin)為耦(ou)合(he)(he)電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)方式是(shi)(shi)(shi)(shi)(shi)不穩定(ding)的(de)(de)(de)(de)(de),它(ta)直(zhi)接受(shou)溫度、濕(shi)度、手(shou)指(zhi)濕(shi)潤程(cheng)度、人(ren)體(ti)體(ti)重、地面(mian)干燥(zao)程(cheng)度影響,受(shou)外(wai)界大面(mian)積物體(ti)的(de)(de)(de)(de)(de)干擾(rao)也(ye)(ye)非(fei)常(chang)大,帶(dai)來(lai)(lai)了不穩定(ding)的(de)(de)(de)(de)(de)結果,這(zhe)些(xie)都直(zhi)接違背了作為觸摸(mo)(mo)屏(ping)(ping)這(zhe)種坐標(biao)(biao)系統的(de)(de)(de)(de)(de)基本(ben)要(yao)求,不可避免的(de)(de)(de)(de)(de)要(yao)產生(sheng)漂移,有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)欲求通(tong)過25點校準(zhun)法(fa)(fa)甚至96點校準(zhun)法(fa)(fa)來(lai)(lai)解決漂移問(wen)題,其(qi)實是(shi)(shi)(shi)(shi)(shi)不可能(neng)的(de)(de)(de)(de)(de),漂移是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)工作的(de)(de)(de)(de)(de)這(zhe)種方式決定(ding)的(de)(de)(de)(de)(de),即使(shi)是(shi)(shi)(shi)(shi)(shi)在(zai)(zai)控制(zhi)器的(de)(de)(de)(de)(de)單片程(cheng)序上利用(yong)(yong)(yong)動態(tai)(tai)計(ji)算(suan)和經驗值查表,也(ye)(ye)只(zhi)能(neng)是(shi)(shi)(shi)(shi)(shi)治標(biao)(biao)不治本(ben)。 其(qi)實,多點校準(zhun)法(fa)(fa)最(zui)早是(shi)(shi)(shi)(shi)(shi)大屏(ping)(ping)幕投影觸摸(mo)(mo)板(ban)使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)方法(fa)(fa),目(mu)的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)消除(chu)坐標(biao)(biao)對應的(de)(de)(de)(de)(de)線(xian)xing失真,電(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)的(de)(de)(de)(de)(de)線(xian)xing失真也(ye)(ye)非(fei)常(chang)厲害(hai),主(zhu)要(yao)是(shi)(shi)(shi)(shi)(shi)因(yin)為電(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)計(ji)算(suan)建立在(zai)(zai)四個電(dian)(dian)(dian)流量與觸摸(mo)(mo)點到四個電(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距離成比(bi)例的(de)(de)(de)(de)(de)理(li)想(xiang)狀態(tai)(tai)上,實際由(you)(you)于受(shou)環(huan)境電(dian)(dian)(dian)容(rong)(rong)、線(xian)路寄生(sheng)電(dian)(dian)(dian)容(rong)(rong)和不同人(ren)使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)影響。