電(dian)(dian)容(rong)(rong)觸(chu)摸屏(ping)(ping)的(de)(de)漂移問題(ti)。在(zai)(zai)(zai)(zai)(zai)觸(chu)摸屏(ping)(ping)產品(pin)(pin)中(zhong)，電(dian)(dian)容(rong)(rong)觸(chu)摸屏(ping)(ping)是我(wo)們常用的(de)(de)觸(chu)摸屏(ping)(ping)方式，那么(me)，對于(yu)電(dian)(dian)容(rong)(rong)觸(chu)摸屏(ping)(ping)來說，其產品(pin)(pin)本身應用比較廣泛，但是也存在(zai)(zai)(zai)(zai)(zai)著不少(shao)問題(ti)。而且由(you)于(yu)現在(zai)(zai)(zai)(zai)(zai)科技(ji)的(de)(de)發展程度還(huan)無法完全解決觸(chu)摸屏(ping)(ping)產品(pin)(pin)在(zai)(zai)(zai)(zai)(zai)相(xiang)關(guan)原理上(shang)出現的(de)(de)問題(ti)，所以對于(yu)這些問題(ti)，目前還(huan)是普遍存在(zai)(zai)(zai)(zai)(zai)的(de)(de)。
在(zai)這(zhe)里武(wu)漢(han)公(gong)司要跟大(da)家討(tao)論的(de)是(shi)關于(yu)電(dian)容(rong)觸摸屏(ping)的(de)"漂(piao)移"問題(ti)(ti)，這(zhe)個問題(ti)(ti)比(bi)較常見，也(ye)(ye)是(shi)我們在(zai)解決產品問題(ti)(ti)時主要考慮的(de)方(fang)面。 電(dian)容(rong)觸摸屏(ping)的(de)漂(piao)移問題(ti)(ti)介紹！ 武(wu)漢(han)觸摸屏(ping)公(gong)司提示，電(dian)容(rong)觸摸屏(ping)本身實際是(shi)一(yi)套精密的(de)漏電(dian)傳感器，帶手(shou)套的(de)手(shou)不(bu)能觸摸，由于(yu)使(shi)用電(dian)容(rong)方(fang)式(shi)，導致有(you)漂(piao)移現象。電(dian)容(rong)觸摸屏(ping)和電(dian)阻觸摸屏(ping)都(dou)是(shi)電(dian)原理工作方(fang)式(shi)，電(dian)工作方(fang)式(shi)對于(yu)多(duo)點觸摸，不(bu)管是(shi)多(duo)少(shao)點，也(ye)(ye)不(bu)管是(shi)連續的(de)還是(shi)不(bu)連續的(de)都(dou)是(shi)取多(duo)點觸摸的(de)中(zhong)心(xin)點判斷，因為電(dian)流疊加(jia)是(shi)分不(bu)出來(lai)誰是(shi)誰的(de)，沒有(you)辦法。
但是(shi)(shi)(shi)(shi)，目前來說，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)仍然有(you)不(bu)(bu)(bu)少問(wen)題(ti)(ti)(ti)存(cun)在(zai)。武漢公(gong)司信(xin)為(wei)，觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)目前的(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)材料ITO--氧化(hua)金屬非(fei)常脆弱(ruo)，觸(chu)(chu)(chu)摸(mo)幾下(xia)就(jiu)會(hui)損壞，還(huan)不(bu)(bu)(bu)能(neng)(neng)直(zhi)(zhi)接用(yong)來作工(gong)(gong)作層(ceng)。材料的(de)(de)(de)(de)問(wen)題(ti)(ti)(ti)一時還(huan)難以(yi)解決，只(zhi)好委曲求全：在(zai)外部增加一層(ceng)非(fei)常薄的(de)(de)(de)(de)堅硬(ying)玻璃(li)，它(ta)顯然是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)能(neng)(neng)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)，直(zhi)(zhi)流(liu)是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)行(xing)了，改用(yong)高頻交流(liu)信(xin)號，靠(kao)人的(de)(de)(de)(de)手(shou)指頭(tou)（隔著薄玻璃(li)）與工(gong)(gong)作面形成的(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來吸走一個(ge)(ge)交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這(zhe)就(jiu)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)由來。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)之所以(yi)出現"漂(piao)移"的(de)(de)(de)(de)問(wen)題(ti)(ti)(ti)，是(shi)(shi)(shi)(shi)因為(wei)耦合(he)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)方(fang)(fang)式是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)穩(wen)定的(de)(de)(de)(de)，它(ta)直(zhi)(zhi)接受(shou)溫度、濕度、手(shou)指濕潤程(cheng)度、人體(ti)體(ti)重、地面干(gan)燥程(cheng)度影響(xiang)，受(shou)外界大面積物體(ti)的(de)(de)(de)(de)干(gan)擾也非(fei)常大，帶來了不(bu)(bu)(bu)穩(wen)定的(de)(de)(de)(de)結(jie)果(guo)，這(zhe)些都直(zhi)(zhi)接違背了作為(wei)觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)這(zhe)種坐標(biao)系統的(de)(de)(de)(de)基本要求，不(bu)(bu)(bu)可(ke)避(bi)免(mian)的(de)(de)(de)(de)要產(chan)生(sheng)漂(piao)移，有(you)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)欲(yu)求通過(guo)25點校準(zhun)法甚至96點校準(zhun)法來解決漂(piao)移問(wen)題(ti)(ti)(ti)，其實是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)可(ke)能(neng)(neng)的(de)(de)(de)(de)，漂(piao)移是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工(gong)(gong)作的(de)(de)(de)(de)這(zhe)種方(fang)(fang)式決定的(de)(de)(de)(de)，即使(shi)是(shi)(shi)(shi)(shi)在(zai)控(kong)制器的(de)(de)(de)(de)單片程(cheng)序上利(li)用(yong)動態計(ji)(ji)算和(he)經驗值查表(biao)，也只(zhi)能(neng)(neng)是(shi)(shi)(shi)(shi)治標(biao)不(bu)(bu)(bu)治本。 其實，多點校準(zhun)法最(zui)早是(shi)(shi)(shi)(shi)大屏(ping)(ping)幕投影觸(chu)(chu)(chu)摸(mo)板使(shi)用(yong)的(de)(de)(de)(de)方(fang)(fang)法，目的(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除(chu)坐標(biao)對應的(de)(de)(de)(de)線xing失真(zhen)(zhen)，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)的(de)(de)(de)(de)線xing失真(zhen)(zhen)也非(fei)常厲害，主要是(shi)(shi)(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)計(ji)(ji)算建立在(zai)四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量與觸(chu)(chu)(chu)摸(mo)點到(dao)四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)距離成比例(li)的(de)(de)(de)(de)理(li)想(xiang)狀態上，實際由于受(shou)環(huan)境電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線路寄生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和(he)不(bu)(bu)(bu)同(tong)人使(shi)用(yong)的(de)(de)(de)(de)影響(xiang)。
