電容觸(chu)摸(mo)屏的(de)漂(piao)移問(wen)題(ti)(ti)。在(zai)觸(chu)摸(mo)屏產品(pin)中(zhong),電容觸(chu)摸(mo)屏是我(wo)們常用的(de)觸(chu)摸(mo)屏方式,那么,對于電容觸(chu)摸(mo)屏來說,其產品(pin)本身(shen)應用比(bi)較廣(guang)泛,但是也存在(zai)著不少(shao)問(wen)題(ti)(ti)。而且(qie)由于現(xian)在(zai)科技的(de)發展程度還無法完全解決觸(chu)摸(mo)屏產品(pin)在(zai)相關原(yuan)理上出現(xian)的(de)問(wen)題(ti)(ti),所以對于這些問(wen)題(ti)(ti),目前還是普遍存在(zai)的(de)。
在(zai)這里(li)武(wu)(wu)漢公(gong)司要跟(gen)大家討論的(de)(de)是(shi)關于電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏(ping)的(de)(de)"漂移(yi)"問(wen)題,這個問(wen)題比較常見,也(ye)是(shi)我們在(zai)解決產品問(wen)題時(shi)主要考慮的(de)(de)方(fang)面。 電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏(ping)的(de)(de)漂移(yi)問(wen)題介紹! 武(wu)(wu)漢觸(chu)摸(mo)(mo)屏(ping)公(gong)司提(ti)示,電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏(ping)本身實際是(shi)一套(tao)精(jing)密的(de)(de)漏電(dian)(dian)(dian)(dian)傳感器(qi),帶手(shou)套(tao)的(de)(de)手(shou)不能(neng)觸(chu)摸(mo)(mo),由(you)于使用(yong)電(dian)(dian)(dian)(dian)容(rong)方(fang)式(shi),導致(zhi)有漂移(yi)現象。電(dian)(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)屏(ping)和電(dian)(dian)(dian)(dian)阻觸(chu)摸(mo)(mo)屏(ping)都(dou)是(shi)電(dian)(dian)(dian)(dian)原理工作(zuo)方(fang)式(shi),電(dian)(dian)(dian)(dian)工作(zuo)方(fang)式(shi)對于多(duo)點(dian)觸(chu)摸(mo)(mo),不管是(shi)多(duo)少(shao)點(dian),也(ye)不管是(shi)連續的(de)(de)還是(shi)不連續的(de)(de)都(dou)是(shi)取多(duo)點(dian)觸(chu)摸(mo)(mo)的(de)(de)中心點(dian)判斷,因(yin)為(wei)電(dian)(dian)(dian)(dian)流疊加是(shi)分不出(chu)來誰(shui)是(shi)誰(shui)的(de)(de),沒有辦法。
但(dan)是(shi)(shi)(shi)(shi),目前(qian)來說(shuo),電(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)仍然(ran)(ran)有不少(shao)問題存在。武漢公司(si)信為,觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)目前(qian)的(de)(de)(de)(de)透明(ming)導(dao)(dao)電(dian)(dian)(dian)材料ITO--氧(yang)化金屬非(fei)常脆弱,觸(chu)摸(mo)(mo)(mo)(mo)幾下就(jiu)會(hui)損壞,還不能(neng)(neng)(neng)直(zhi)接(jie)用(yong)(yong)(yong)來作(zuo)工(gong)作(zuo)層。材料的(de)(de)(de)(de)問題一(yi)(yi)時還難以解決,只好委曲(qu)求(qiu)(qiu)全:在外部(bu)增(zeng)加一(yi)(yi)層非(fei)常薄的(de)(de)(de)(de)堅硬玻璃(li),它(ta)顯然(ran)(ran)是(shi)(shi)(shi)(shi)不能(neng)(neng)(neng)導(dao)(dao)電(dian)(dian)(dian)的(de)(de)(de)(de),直(zhi)流(liu)是(shi)(shi)(shi)(shi)不行了,改用(yong)(yong)(yong)高頻交(jiao)流(liu)信號,靠人的(de)(de)(de)(de)手指頭(隔著薄玻璃(li))與工(gong)作(zuo)面(mian)(mian)形成的(de)(de)(de)(de)耦(ou)合電(dian)(dian)(dian)容(rong)來吸走一(yi)(yi)個交(jiao)流(liu)電(dian)(dian)(dian)流(liu),這就(jiu)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)屏(ping)(ping)"電(dian)(dian)(dian)容(rong)"名字的(de)(de)(de)(de)由來。 電(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)之(zhi)所以出現(xian)"漂(piao)移"的(de)(de)(de)(de)問題,是(shi)(shi)(shi)(shi)因為耦(ou)合電(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)方(fang)式是(shi)(shi)(shi)(shi)不穩定的(de)(de)(de)(de),它(ta)直(zhi)接(jie)受溫(wen)度(du)、濕度(du)、手指濕潤程(cheng)度(du)、人體體重(zhong)、地面(mian)(mian)干燥(zao)程(cheng)度(du)影(ying)響(xiang),受外界大面(mian)(mian)積物體的(de)(de)(de)(de)干擾(rao)也(ye)(ye)非(fei)常大,帶來了不穩定的(de)(de)(de)(de)結(jie)果,這些都直(zhi)接(jie)違背了作(zuo)為觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)這種坐標(biao)系(xi)統(tong)的(de)(de)(de)(de)基(ji)本要(yao)(yao)求(qiu)(qiu),不可避免的(de)(de)(de)(de)要(yao)(yao)產生漂(piao)移,有的(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)欲求(qiu)(qiu)通過(guo)25點(dian)校準(zhun)法(fa)甚至96點(dian)校準(zhun)法(fa)來解決漂(piao)移問題,其(qi)實是(shi)(shi)(shi)(shi)不可能(neng)(neng)(neng)的(de)(de)(de)(de),漂(piao)移是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)工(gong)作(zuo)的(de)(de)(de)(de)這種方(fang)式決定的(de)(de)(de)(de),即使是(shi)(shi)(shi)(shi)在控制器的(de)(de)(de)(de)單片(pian)程(cheng)序上利用(yong)(yong)(yong)動態計(ji)算和經驗(yan)值查表,也(ye)(ye)只能(neng)(neng)(neng)是(shi)(shi)(shi)(shi)治標(biao)不治本。 其(qi)實,多(duo)點(dian)校準(zhun)法(fa)最早是(shi)(shi)(shi)(shi)大屏(ping)(ping)幕投影(ying)觸(chu)摸(mo)(mo)(mo)(mo)板使用(yong)(yong)(yong)的(de)(de)(de)(de)方(fang)法(fa),目的(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐標(biao)對應的(de)(de)(de)(de)線xing失真(zhen),電(dian)(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)的(de)(de)(de)(de)線xing失真(zhen)也(ye)(ye)非(fei)常厲害,主要(yao)(yao)是(shi)(shi)(shi)(shi)因為電(dian)(dian)(dian)容(rong)屏(ping)(ping)的(de)(de)(de)(de)計(ji)算建(jian)立在四(si)個電(dian)(dian)(dian)流(liu)量與觸(chu)摸(mo)(mo)(mo)(mo)點(dian)到(dao)四(si)個電(dian)(dian)(dian)極的(de)(de)(de)(de)距(ju)離成比例的(de)(de)(de)(de)理想狀態上,實際(ji)由于(yu)受環(huan)境(jing)電(dian)(dian)(dian)容(rong)、線路寄生電(dian)(dian)(dian)容(rong)和不同(tong)人使用(yong)(yong)(yong)的(de)(de)(de)(de)影(ying)響(xiang)。