電容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)漂(piao)移問(wen)題(ti)。在(zai)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)產品中，電容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)是我(wo)們常(chang)用的(de)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)方式，那么，對(dui)(dui)于電容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)來說，其產品本身應用比(bi)較廣泛，但(dan)是也存(cun)在(zai)著不(bu)少問(wen)題(ti)。而且由于現(xian)在(zai)科技的(de)發(fa)展程度(du)還無法完全解決觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)產品在(zai)相關(guan)原(yuan)理上出現(xian)的(de)問(wen)題(ti)，所(suo)以對(dui)(dui)于這些(xie)問(wen)題(ti)，目前還是普遍(bian)存(cun)在(zai)的(de)。
在這里武(wu)漢公(gong)司(si)要跟大家討論(lun)的(de)是(shi)(shi)關(guan)于電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)的(de)"漂移"問(wen)(wen)(wen)題(ti)，這個問(wen)(wen)(wen)題(ti)比較常見，也(ye)是(shi)(shi)我(wo)們(men)在解(jie)決產品(pin)問(wen)(wen)(wen)題(ti)時主要考慮(lv)的(de)方面。 電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)的(de)漂移問(wen)(wen)(wen)題(ti)介紹！ 武(wu)漢觸(chu)摸(mo)屏(ping)(ping)公(gong)司(si)提示(shi)，電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)本身實際(ji)是(shi)(shi)一套精密的(de)漏電(dian)(dian)傳感器，帶(dai)手(shou)套的(de)手(shou)不(bu)(bu)能(neng)觸(chu)摸(mo)，由(you)于使用電(dian)(dian)容(rong)(rong)方式(shi)，導致有(you)漂移現象。電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)屏(ping)(ping)和(he)電(dian)(dian)阻觸(chu)摸(mo)屏(ping)(ping)都是(shi)(shi)電(dian)(dian)原理工作方式(shi)，電(dian)(dian)工作方式(shi)對(dui)于多點(dian)(dian)觸(chu)摸(mo)，不(bu)(bu)管(guan)是(shi)(shi)多少點(dian)(dian)，也(ye)不(bu)(bu)管(guan)是(shi)(shi)連續的(de)還(huan)是(shi)(shi)不(bu)(bu)連續的(de)都是(shi)(shi)取多點(dian)(dian)觸(chu)摸(mo)的(de)中心(xin)點(dian)(dian)判(pan)斷，因為電(dian)(dian)流疊加是(shi)(shi)分不(bu)(bu)出(chu)來誰是(shi)(shi)誰的(de)，沒有(you)辦法。
但是(shi)(shi)，目(mu)前(qian)(qian)來(lai)說，電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸摸(mo)屏仍然有(you)不(bu)(bu)少問(wen)題(ti)(ti)存(cun)在(zai)。武漢公司(si)信為(wei)，觸摸(mo)屏目(mu)前(qian)(qian)的(de)(de)(de)透(tou)明(ming)導電(dian)(dian)(dian)材(cai)料(liao)ITO--氧化金(jin)屬非(fei)(fei)常脆弱，觸摸(mo)幾(ji)下就會損壞，還不(bu)(bu)能(neng)(neng)直(zhi)接(jie)用(yong)來(lai)作(zuo)(zuo)工(gong)作(zuo)(zuo)層。材(cai)料(liao)的(de)(de)(de)問(wen)題(ti)(ti)一時還難以解決(jue)，只好委曲求(qiu)(qiu)全：在(zai)外部增加一層非(fei)(fei)常薄的(de)(de)(de)堅硬玻(bo)璃，它顯然是(shi)(shi)不(bu)(bu)能(neng)(neng)導電(dian)(dian)(dian)的(de)(de)(de)，直(zhi)流是(shi)(shi)不(bu)(bu)行了，改(gai)用(yong)高頻交流信號，靠人(ren)的(de)(de)(de)手指頭（隔著薄玻(bo)璃）與工(gong)作(zuo)(zuo)面形成的(de)(de)(de)耦合(he)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)來(lai)吸走一個(ge)交流電(dian)(dian)(dian)流，這(zhe)(zhe)就是(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏"電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)"名字的(de)(de)(de)由(you)來(lai)。 電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸摸(mo)屏之所以出現"漂(piao)移(yi)"的(de)(de)(de)問(wen)題(ti)(ti)，是(shi)(shi)因為(wei)耦合(he)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)方(fang)式(shi)是(shi)(shi)不(bu)(bu)穩定的(de)(de)(de)，它直(zhi)接(jie)受(shou)溫度(du)(du)、濕度(du)(du)、手指濕潤程(cheng)度(du)(du)、人(ren)體體重、地面干燥程(cheng)度(du)(du)影(ying)響，受(shou)外界大面積物體的(de)(de)(de)干擾也非(fei)(fei)常大，帶來(lai)了不(bu)(bu)穩定的(de)(de)(de)結(jie)果，這(zhe)(zhe)些都直(zhi)接(jie)違背了作(zuo)(zuo)為(wei)觸摸(mo)屏這(zhe)(zhe)種(zhong)坐(zuo)標系(xi)統的(de)(de)(de)基本要(yao)(yao)求(qiu)(qiu)，不(bu)(bu)可避免的(de)(de)(de)要(yao)(yao)產生(sheng)漂(piao)移(yi)，有(you)的(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸摸(mo)屏欲(yu)求(qiu)(qiu)通(tong)過25點(dian)校準(zhun)法甚(shen)至96點(dian)校準(zhun)法來(lai)解決(jue)漂(piao)移(yi)問(wen)題(ti)(ti)，其(qi)實是(shi)(shi)不(bu)(bu)可能(neng)(neng)的(de)(de)(de)，漂(piao)移(yi)是(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)工(gong)作(zuo)(zuo)的(de)(de)(de)這(zhe)(zhe)種(zhong)方(fang)式(shi)決(jue)定的(de)(de)(de)，即使(shi)是(shi)(shi)在(zai)控制器的(de)(de)(de)單(dan)片程(cheng)序上(shang)利(li)用(yong)動態計算和經驗(yan)值查表，也只能(neng)(neng)是(shi)(shi)治(zhi)標不(bu)(bu)治(zhi)本。 其(qi)實，多(duo)點(dian)校準(zhun)法最早是(shi)(shi)大屏幕投(tou)影(ying)觸摸(mo)板使(shi)用(yong)的(de)(de)(de)方(fang)法，目(mu)的(de)(de)(de)是(shi)(shi)消除坐(zuo)標對應的(de)(de)(de)線(xian)xing失(shi)真，電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸摸(mo)屏的(de)(de)(de)線(xian)xing失(shi)真也非(fei)(fei)常厲害，主(zhu)要(yao)(yao)是(shi)(shi)因為(wei)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏的(de)(de)(de)計算建(jian)立在(zai)四(si)個(ge)電(dian)(dian)(dian)流量與觸摸(mo)點(dian)到四(si)個(ge)電(dian)(dian)(dian)極的(de)(de)(de)距離成比例的(de)(de)(de)理想狀態上(shang)，實際由(you)于受(shou)環境電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、線(xian)路寄生(sheng)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)和不(bu)(bu)同人(ren)使(shi)用(yong)的(de)(de)(de)影(ying)響。
