電(dian)容觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)的漂移問(wen)題(ti)(ti)。在觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)產品中,電(dian)容觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)是(shi)(shi)我們常用(yong)(yong)的觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)方式(shi),那么,對(dui)于電(dian)容觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)來說,其產品本身應用(yong)(yong)比較廣泛,但(dan)是(shi)(shi)也存在著不(bu)少(shao)問(wen)題(ti)(ti)。而(er)且(qie)由于現(xian)在科(ke)技的發展程度還無(wu)法完全(quan)解(jie)決(jue)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)產品在相關原理上(shang)出現(xian)的問(wen)題(ti)(ti),所以對(dui)于這些問(wen)題(ti)(ti),目(mu)前還是(shi)(shi)普遍存在的。
在(zai)這里武漢公司要跟大家討論的(de)(de)是(shi)關(guan)于電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)"漂(piao)移(yi)"問(wen)題(ti),這個問(wen)題(ti)比較常見,也(ye)是(shi)我們在(zai)解決產品問(wen)題(ti)時主要考慮的(de)(de)方(fang)面(mian)。 電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)漂(piao)移(yi)問(wen)題(ti)介紹! 武漢觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)公司提示,電(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)本身實際是(shi)一套精(jing)密的(de)(de)漏電(dian)傳感器,帶手(shou)套的(de)(de)手(shou)不(bu)能觸(chu)(chu)(chu)摸(mo)(mo)(mo),由于使用電(dian)容(rong)方(fang)式,導致有漂(piao)移(yi)現象。電(dian)容(rong)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)電(dian)原理工作(zuo)方(fang)式,電(dian)工作(zuo)方(fang)式對于多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)(mo),不(bu)管是(shi)多(duo)少點(dian),也(ye)不(bu)管是(shi)連續的(de)(de)還是(shi)不(bu)連續的(de)(de)都(dou)是(shi)取多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)(mo)(mo)的(de)(de)中(zhong)心點(dian)判斷(duan),因為電(dian)流(liu)疊加是(shi)分不(bu)出來(lai)誰是(shi)誰的(de)(de),沒(mei)有辦法(fa)。
但是(shi),目前來(lai)說(shuo),電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)仍然(ran)有不(bu)少問(wen)(wen)題存在。武漢公司信為,觸摸(mo)(mo)屏(ping)(ping)目前的(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)材料ITO--氧(yang)化金(jin)屬非(fei)(fei)常(chang)(chang)脆弱,觸摸(mo)(mo)幾下就(jiu)會損壞(huai),還不(bu)能直(zhi)接(jie)(jie)用來(lai)作工作層(ceng)。材料的(de)(de)(de)(de)(de)問(wen)(wen)題一時(shi)還難以解決,只好委曲求全:在外部(bu)增加(jia)一層(ceng)非(fei)(fei)常(chang)(chang)薄的(de)(de)(de)(de)(de)堅硬玻(bo)璃,它顯然(ran)是(shi)不(bu)能導電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de),直(zhi)流(liu)是(shi)不(bu)行了(le),改用高頻(pin)交流(liu)信號,靠人的(de)(de)(de)(de)(de)手指(zhi)頭(隔著薄玻(bo)璃)與工作面形成的(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)吸走一個(ge)交流(liu)電(dian)(dian)(dian)(dian)(dian)流(liu),這(zhe)就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)(de)由(you)來(lai)。 電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)之(zhi)所以出現"漂移"的(de)(de)(de)(de)(de)問(wen)(wen)題,是(shi)因為耦合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)(de)方(fang)式是(shi)不(bu)穩定(ding)的(de)(de)(de)(de)(de),它直(zhi)接(jie)(jie)受溫度(du)(du)、濕(shi)度(du)(du)、手指(zhi)濕(shi)潤程度(du)(du)、人體體重、地面干燥程度(du)(du)影(ying)響,受外界大面積物體的(de)(de)(de)(de)(de)干擾(rao)也(ye)非(fei)(fei)常(chang)(chang)大,帶(dai)來(lai)了(le)不(bu)穩定(ding)的(de)(de)(de)(de)(de)結果,這(zhe)些都直(zhi)接(jie)(jie)違(wei)背了(le)作為觸摸(mo)(mo)屏(ping)(ping)這(zhe)種坐(zuo)標(biao)系統的(de)(de)(de)(de)(de)基(ji)本(ben)要求,不(bu)可避(bi)免的(de)(de)(de)(de)(de)要產生漂移,有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)欲(yu)求通過25點校準法(fa)甚至96點校準法(fa)來(lai)解決漂移問(wen)(wen)題,其實(shi)(shi)是(shi)不(bu)可能的(de)(de)(de)(de)(de),漂移是(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工作的(de)(de)(de)(de)(de)這(zhe)種方(fang)式決定(ding)的(de)(de)(de)(de)(de),即(ji)使是(shi)在控制器的(de)(de)(de)(de)(de)單片(pian)程序上利用動態計算和經(jing)驗值查表,也(ye)只能是(shi)治(zhi)標(biao)不(bu)治(zhi)本(ben)。 其實(shi)(shi),多點校準法(fa)最早是(shi)大屏(ping)(ping)幕投(tou)影(ying)觸摸(mo)(mo)板(ban)使用的(de)(de)(de)(de)(de)方(fang)法(fa),目的(de)(de)(de)(de)(de)是(shi)消(xiao)除坐(zuo)標(biao)對應(ying)的(de)(de)(de)(de)(de)線(xian)xing失真(zhen),電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)屏(ping)(ping)的(de)(de)(de)(de)(de)線(xian)xing失真(zhen)也(ye)非(fei)(fei)常(chang)(chang)厲害,主要是(shi)因為電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)計算建(jian)立在四個(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)量與觸摸(mo)(mo)點到四個(ge)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距離成比例(li)的(de)(de)(de)(de)(de)理想狀態上,實(shi)(shi)際由(you)于受環(huan)境電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線(xian)路寄(ji)生電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和不(bu)同(tong)人使用的(de)(de)(de)(de)(de)影(ying)響。