電容觸(chu)(chu)摸(mo)(mo)屏的(de)(de)漂(piao)移問題。在(zai)觸(chu)(chu)摸(mo)(mo)屏產(chan)品(pin)中,電容觸(chu)(chu)摸(mo)(mo)屏是(shi)(shi)我們常用的(de)(de)觸(chu)(chu)摸(mo)(mo)屏方式(shi),那(nei)么,對于電容觸(chu)(chu)摸(mo)(mo)屏來說,其產(chan)品(pin)本身應(ying)用比(bi)較廣泛,但是(shi)(shi)也存(cun)在(zai)著不少問題。而且由于現在(zai)科技(ji)的(de)(de)發展(zhan)程(cheng)度還無法完(wan)全解決觸(chu)(chu)摸(mo)(mo)屏產(chan)品(pin)在(zai)相關原理上出現的(de)(de)問題,所以(yi)對于這些(xie)問題,目前還是(shi)(shi)普遍存(cun)在(zai)的(de)(de)。
在這(zhe)里(li)武漢公(gong)司要跟(gen)大家討論的(de)(de)是關于電(dian)(dian)容觸摸(mo)(mo)(mo)屏(ping)的(de)(de)"漂(piao)移"問(wen)題(ti)(ti),這(zhe)個(ge)問(wen)題(ti)(ti)比(bi)較常見,也是我們在解決產品(pin)問(wen)題(ti)(ti)時主要考慮的(de)(de)方(fang)面。 電(dian)(dian)容觸摸(mo)(mo)(mo)屏(ping)的(de)(de)漂(piao)移問(wen)題(ti)(ti)介紹(shao)! 武漢觸摸(mo)(mo)(mo)屏(ping)公(gong)司提示,電(dian)(dian)容觸摸(mo)(mo)(mo)屏(ping)本身實際是一套精密(mi)的(de)(de)漏電(dian)(dian)傳感器,帶手套的(de)(de)手不(bu)(bu)能觸摸(mo)(mo)(mo),由于使(shi)用電(dian)(dian)容方(fang)式(shi),導致有漂(piao)移現象。電(dian)(dian)容觸摸(mo)(mo)(mo)屏(ping)和電(dian)(dian)阻觸摸(mo)(mo)(mo)屏(ping)都(dou)是電(dian)(dian)原理(li)工(gong)作(zuo)方(fang)式(shi),電(dian)(dian)工(gong)作(zuo)方(fang)式(shi)對于多點(dian)(dian)(dian)(dian)觸摸(mo)(mo)(mo),不(bu)(bu)管是多少點(dian)(dian)(dian)(dian),也不(bu)(bu)管是連續(xu)的(de)(de)還是不(bu)(bu)連續(xu)的(de)(de)都(dou)是取多點(dian)(dian)(dian)(dian)觸摸(mo)(mo)(mo)的(de)(de)中心點(dian)(dian)(dian)(dian)判斷(duan),因為電(dian)(dian)流疊加是分不(bu)(bu)出來誰(shui)是誰(shui)的(de)(de),沒有辦法(fa)。
但是(shi)(shi)(shi),目前來說(shuo),電(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)仍然(ran)(ran)有不(bu)(bu)(bu)(bu)少問題存在。武漢公司信為(wei),觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)目前的(de)(de)(de)(de)透明(ming)導電(dian)(dian)材料ITO--氧化金屬非(fei)常(chang)脆弱,觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)幾(ji)下就會損壞,還不(bu)(bu)(bu)(bu)能直接(jie)用來作(zuo)工(gong)作(zuo)層。材料的(de)(de)(de)(de)問題一時還難以解決,只(zhi)好委曲求全(quan):在外部增加一層非(fei)常(chang)薄(bo)(bo)的(de)(de)(de)(de)堅硬玻(bo)璃(li),它顯(xian)然(ran)(ran)是(shi)(shi)(shi)不(bu)(bu)(bu)(bu)能導電(dian)(dian)的(de)(de)(de)(de),直流是(shi)(shi)(shi)不(bu)(bu)(bu)(bu)行了,改(gai)用高(gao)頻交流信號,靠人(ren)的(de)(de)(de)(de)手指頭(隔著薄(bo)(bo)玻(bo)璃(li))與工(gong)作(zuo)面形成(cheng)的(de)(de)(de)(de)耦合電(dian)(dian)容(rong)(rong)(rong)來吸走(zou)一個交流電(dian)(dian)流,這(zhe)(zhe)就是(shi)(shi)(shi)電(dian)(dian)容(rong)(rong)(rong)屏(ping)"電(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)由(you)來。 電(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)之所以出(chu)現"漂移(yi)"的(de)(de)(de)(de)問題,是(shi)(shi)(shi)因為(wei)耦合電(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)方式(shi)是(shi)(shi)(shi)不(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de),它直接(jie)受(shou)溫度、濕(shi)度、手指濕(shi)潤(run)程(cheng)度、人(ren)體體重、地面干(gan)燥(zao)程(cheng)度影響(xiang),受(shou)外界大面積物體的(de)(de)(de)(de)干(gan)擾也(ye)非(fei)常(chang)大,帶來了不(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de)結果,這(zhe)(zhe)些(xie)都直接(jie)違背了作(zuo)為(wei)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)這(zhe)(zhe)種坐標(biao)系統的(de)(de)(de)(de)基本(ben)要求,不(bu)(bu)(bu)(bu)可避免的(de)(de)(de)(de)要產生漂移(yi),有的(de)(de)(de)(de)電(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)欲求通過25點(dian)校(xiao)準法甚至(zhi)96點(dian)校(xiao)準法來解決漂移(yi)問題,其實是(shi)(shi)(shi)不(bu)(bu)(bu)(bu)可能的(de)(de)(de)(de),漂移(yi)是(shi)(shi)(shi)電(dian)(dian)容(rong)(rong)(rong)工(gong)作(zuo)的(de)(de)(de)(de)這(zhe)(zhe)種方式(shi)決定的(de)(de)(de)(de),即(ji)使(shi)是(shi)(shi)(shi)在控制(zhi)器的(de)(de)(de)(de)單(dan)片程(cheng)序(xu)上利(li)用動態計(ji)算和經(jing)驗值查(cha)表,也(ye)只(zhi)能是(shi)(shi)(shi)治標(biao)不(bu)(bu)(bu)(bu)治本(ben)。 其實,多點(dian)校(xiao)準法最早是(shi)(shi)(shi)大屏(ping)幕投影觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)板使(shi)用的(de)(de)(de)(de)方法,目的(de)(de)(de)(de)是(shi)(shi)(shi)消除坐標(biao)對應的(de)(de)(de)(de)線xing失真,電(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)的(de)(de)(de)(de)線xing失真也(ye)非(fei)常(chang)厲害,主(zhu)要是(shi)(shi)(shi)因為(wei)電(dian)(dian)容(rong)(rong)(rong)屏(ping)的(de)(de)(de)(de)計(ji)算建(jian)立在四個電(dian)(dian)流量(liang)與觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)點(dian)到四個電(dian)(dian)極(ji)的(de)(de)(de)(de)距離成(cheng)比(bi)例的(de)(de)(de)(de)理想(xiang)狀態上,實際(ji)由(you)于受(shou)環境電(dian)(dian)容(rong)(rong)(rong)、線路寄(ji)生電(dian)(dian)容(rong)(rong)(rong)和不(bu)(bu)(bu)(bu)同人(ren)使(shi)用的(de)(de)(de)(de)影響(xiang)。