電容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)的(de)(de)漂移問題(ti)(ti)(ti)。在觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)產(chan)品中，電容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)是(shi)我們常用的(de)(de)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)方式，那么(me)，對(dui)于(yu)電容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)來說，其產(chan)品本身應用比較廣(guang)泛(fan)，但是(shi)也(ye)存在著不(bu)少問題(ti)(ti)(ti)。而(er)且由于(yu)現在科技(ji)的(de)(de)發展程(cheng)度(du)還(huan)無法完全解(jie)決觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)產(chan)品在相關原(yuan)理上出(chu)現的(de)(de)問題(ti)(ti)(ti)，所(suo)以對(dui)于(yu)這(zhe)些(xie)問題(ti)(ti)(ti)，目前(qian)還(huan)是(shi)普遍存在的(de)(de)。
在(zai)這(zhe)(zhe)里武(wu)漢公司要跟大家(jia)討論的(de)(de)(de)是(shi)關于(yu)電(dian)(dian)容觸(chu)摸(mo)屏(ping)(ping)的(de)(de)(de)"漂(piao)移(yi)"問(wen)題(ti)，這(zhe)(zhe)個問(wen)題(ti)比較(jiao)常見，也(ye)是(shi)我們在(zai)解決產(chan)品(pin)問(wen)題(ti)時主要考慮的(de)(de)(de)方面。 電(dian)(dian)容觸(chu)摸(mo)屏(ping)(ping)的(de)(de)(de)漂(piao)移(yi)問(wen)題(ti)介紹！ 武(wu)漢觸(chu)摸(mo)屏(ping)(ping)公司提示，電(dian)(dian)容觸(chu)摸(mo)屏(ping)(ping)本身實際是(shi)一套精(jing)密的(de)(de)(de)漏電(dian)(dian)傳(chuan)感器，帶(dai)手(shou)(shou)套的(de)(de)(de)手(shou)(shou)不(bu)能觸(chu)摸(mo)，由于(yu)使用(yong)電(dian)(dian)容方式，導(dao)致(zhi)有(you)漂(piao)移(yi)現象。電(dian)(dian)容觸(chu)摸(mo)屏(ping)(ping)和電(dian)(dian)阻觸(chu)摸(mo)屏(ping)(ping)都是(shi)電(dian)(dian)原(yuan)理工(gong)作方式，電(dian)(dian)工(gong)作方式對于(yu)多點觸(chu)摸(mo)，不(bu)管是(shi)多少點，也(ye)不(bu)管是(shi)連續的(de)(de)(de)還是(shi)不(bu)連續的(de)(de)(de)都是(shi)取多點觸(chu)摸(mo)的(de)(de)(de)中(zhong)心點判斷，因為電(dian)(dian)流(liu)疊加是(shi)分不(bu)出來誰是(shi)誰的(de)(de)(de)，沒有(you)辦法。
但是(shi)，目(mu)(mu)前來(lai)(lai)說，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)仍然(ran)有不(bu)(bu)少問題存在(zai)(zai)。武漢公司信為(wei)，觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)目(mu)(mu)前的(de)(de)(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料ITO--氧化金屬非(fei)(fei)常脆弱(ruo)，觸(chu)摸(mo)(mo)幾下(xia)就(jiu)會損(sun)壞，還不(bu)(bu)能直接(jie)用(yong)(yong)來(lai)(lai)作(zuo)工作(zuo)層。材(cai)料的(de)(de)(de)(de)(de)(de)(de)問題一(yi)時(shi)還難以(yi)解決，只好委曲求全：在(zai)(zai)外部增加一(yi)層非(fei)(fei)常薄的(de)(de)(de)(de)(de)(de)(de)堅(jian)硬玻(bo)璃，它顯然(ran)是(shi)不(bu)(bu)能導電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)，直流(liu)是(shi)不(bu)(bu)行了(le)(le)，改用(yong)(yong)高(gao)頻交(jiao)(jiao)流(liu)信號，靠人(ren)的(de)(de)(de)(de)(de)(de)(de)手指(zhi)頭(tou)（隔著薄玻(bo)璃）與(yu)工作(zuo)面(mian)形成的(de)(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)(lai)吸(xi)走一(yi)個(ge)交(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這(zhe)就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)(de)(de)(de)(de)由來(lai)(lai)。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)之所以(yi)出現"漂移(yi)"的(de)(de)(de)(de)(de)(de)(de)問題，是(shi)因為(wei)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)(de)方式(shi)是(shi)不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de)，它直接(jie)受溫度(du)(du)、濕度(du)(du)、手指(zhi)濕潤程(cheng)(cheng)度(du)(du)、人(ren)體體重、地面(mian)干燥程(cheng)(cheng)度(du)(du)影響(xiang)，受外界大面(mian)積(ji)物(wu)體的(de)(de)(de)(de)(de)(de)(de)干擾也(ye)非(fei)(fei)常大，帶來(lai)(lai)了(le)(le)不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de)結(jie)果，這(zhe)些都直接(jie)違背了(le)(le)作(zuo)為(wei)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)這(zhe)種(zhong)坐(zuo)標系(xi)統的(de)(de)(de)(de)(de)(de)(de)基本要(yao)求，不(bu)(bu)可(ke)避免的(de)(de)(de)(de)(de)(de)(de)要(yao)產生漂移(yi)，有的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)欲求通(tong)過25點(dian)校準(zhun)法(fa)(fa)甚至(zhi)96點(dian)校準(zhun)法(fa)(fa)來(lai)(lai)解決漂移(yi)問題，其(qi)實是(shi)不(bu)(bu)可(ke)能的(de)(de)(de)(de)(de)(de)(de)，漂移(yi)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)工作(zuo)的(de)(de)(de)(de)(de)(de)(de)這(zhe)種(zhong)方式(shi)決定的(de)(de)(de)(de)(de)(de)(de)，即使是(shi)在(zai)(zai)控制器的(de)(de)(de)(de)(de)(de)(de)單片程(cheng)(cheng)序上(shang)利用(yong)(yong)動態計算(suan)(suan)和經驗值查(cha)表，也(ye)只能是(shi)治標不(bu)(bu)治本。 其(qi)實，多點(dian)校準(zhun)法(fa)(fa)最早是(shi)大屏(ping)(ping)(ping)幕(mu)投影觸(chu)摸(mo)(mo)板使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)方法(fa)(fa)，目(mu)(mu)的(de)(de)(de)(de)(de)(de)(de)是(shi)消除坐(zuo)標對應的(de)(de)(de)(de)(de)(de)(de)線(xian)xing失(shi)真，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)線(xian)xing失(shi)真也(ye)非(fei)(fei)常厲害，主要(yao)是(shi)因為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)(de)計算(suan)(suan)建立(li)在(zai)(zai)四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量與(yu)觸(chu)摸(mo)(mo)點(dian)到(dao)四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)(de)(de)理(li)想狀態上(shang)，實際由于受環境電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)、線(xian)路寄(ji)生電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)同人(ren)使用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)影響(xiang)。
