電容觸摸(mo)屏(ping)(ping)(ping)(ping)的漂移問(wen)(wen)題。在(zai)觸摸(mo)屏(ping)(ping)(ping)(ping)產品(pin)中，電容觸摸(mo)屏(ping)(ping)(ping)(ping)是我們常用的觸摸(mo)屏(ping)(ping)(ping)(ping)方式，那么，對(dui)于(yu)電容觸摸(mo)屏(ping)(ping)(ping)(ping)來說，其(qi)產品(pin)本(ben)身應(ying)用比較(jiao)廣泛，但是也(ye)存在(zai)著不(bu)少問(wen)(wen)題。而(er)且由(you)于(yu)現在(zai)科技的發展(zhan)程(cheng)度還(huan)無法(fa)完全解(jie)決觸摸(mo)屏(ping)(ping)(ping)(ping)產品(pin)在(zai)相關原理上出現的問(wen)(wen)題，所(suo)以對(dui)于(yu)這些問(wen)(wen)題，目前還(huan)是普遍存在(zai)的。
在(zai)這里武漢公司要跟大家討論的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)關于(yu)電(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)"漂移"問(wen)題，這個問(wen)題比較常見，也(ye)是(shi)(shi)(shi)(shi)我們在(zai)解決產(chan)品問(wen)題時主要考慮(lv)的(de)(de)(de)(de)(de)方面。 電(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)漂移問(wen)題介紹！ 武漢觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)公司提示(shi)，電(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)本身實際是(shi)(shi)(shi)(shi)一套精(jing)密的(de)(de)(de)(de)(de)漏電(dian)(dian)(dian)傳(chuan)感器，帶手(shou)(shou)套的(de)(de)(de)(de)(de)手(shou)(shou)不(bu)能觸(chu)(chu)(chu)(chu)摸(mo)，由于(yu)使用電(dian)(dian)(dian)容(rong)方式(shi)，導致有漂移現(xian)象(xiang)。電(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)和電(dian)(dian)(dian)阻(zu)觸(chu)(chu)(chu)(chu)摸(mo)屏(ping)(ping)(ping)都是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)原理(li)工作方式(shi)，電(dian)(dian)(dian)工作方式(shi)對于(yu)多點(dian)(dian)觸(chu)(chu)(chu)(chu)摸(mo)，不(bu)管(guan)是(shi)(shi)(shi)(shi)多少點(dian)(dian)，也(ye)不(bu)管(guan)是(shi)(shi)(shi)(shi)連續的(de)(de)(de)(de)(de)還是(shi)(shi)(shi)(shi)不(bu)連續的(de)(de)(de)(de)(de)都是(shi)(shi)(shi)(shi)取多點(dian)(dian)觸(chu)(chu)(chu)(chu)摸(mo)的(de)(de)(de)(de)(de)中心點(dian)(dian)判斷，因(yin)為電(dian)(dian)(dian)流疊加是(shi)(shi)(shi)(shi)分不(bu)出(chu)來(lai)誰是(shi)(shi)(shi)(shi)誰的(de)(de)(de)(de)(de)，沒有辦法。
但是(shi)，目(mu)前(qian)(qian)來(lai)說，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏仍然有不(bu)(bu)(bu)(bu)少問(wen)題存在。武漢(han)公司信為，觸(chu)(chu)摸(mo)屏目(mu)前(qian)(qian)的(de)(de)(de)透(tou)明導電(dian)(dian)(dian)(dian)材料ITO--氧(yang)化金屬非(fei)(fei)常脆弱，觸(chu)(chu)摸(mo)幾下(xia)就(jiu)會損壞，還不(bu)(bu)(bu)(bu)能(neng)(neng)(neng)直(zhi)接用(yong)(yong)來(lai)作(zuo)工作(zuo)層。材料的(de)(de)(de)問(wen)題一時(shi)還難以解決，只(zhi)好委曲求(qiu)全：在外部增加(jia)一層非(fei)(fei)常薄的(de)(de)(de)堅硬玻璃，它顯然是(shi)不(bu)(bu)(bu)(bu)能(neng)(neng)(neng)導電(dian)(dian)(dian)(dian)的(de)(de)(de)，直(zhi)流(liu)(liu)是(shi)不(bu)(bu)(bu)(bu)行(xing)了，改用(yong)(yong)高頻交流(liu)(liu)信號，靠(kao)人(ren)的(de)(de)(de)手指頭（隔(ge)著薄玻璃）與工作(zuo)面形成的(de)(de)(de)耦(ou)合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)吸走一個(ge)(ge)交流(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)，這就(jiu)是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏"電(dian)(dian)(dian)(dian)容(rong)(rong)"名(ming)字的(de)(de)(de)由(you)(you)來(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏之所以出(chu)現"漂移"的(de)(de)(de)問(wen)題，是(shi)因(yin)(yin)為耦(ou)合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)方式是(shi)不(bu)(bu)(bu)(bu)穩定(ding)的(de)(de)(de)，它直(zhi)接受(shou)溫度(du)(du)、濕(shi)度(du)(du)、手指濕(shi)潤程度(du)(du)、人(ren)體體重、地面干燥程度(du)(du)影響，受(shou)外界大面積物(wu)體的(de)(de)(de)干擾也非(fei)(fei)常大，帶來(lai)了不(bu)(bu)(bu)(bu)穩定(ding)的(de)(de)(de)結果，這些都直(zhi)接違背了作(zuo)為觸(chu)(chu)摸(mo)屏這種坐標系統的(de)(de)(de)基(ji)本(ben)要求(qiu)，不(bu)(bu)(bu)(bu)可避免(mian)的(de)(de)(de)要產生(sheng)漂移，有的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏欲求(qiu)通(tong)過25點校準法甚至96點校準法來(lai)解決漂移問(wen)題，其(qi)實是(shi)不(bu)(bu)(bu)(bu)可能(neng)(neng)(neng)的(de)(de)(de)，漂移是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工作(zuo)的(de)(de)(de)這種方式決定(ding)的(de)(de)(de)，即使(shi)(shi)是(shi)在控制器的(de)(de)(de)單(dan)片程序上利(li)用(yong)(yong)動態計算和經驗(yan)值查表，也只(zhi)能(neng)(neng)(neng)是(shi)治(zhi)標不(bu)(bu)(bu)(bu)治(zhi)本(ben)。 其(qi)實，多點校準法最早是(shi)大屏幕(mu)投影觸(chu)(chu)摸(mo)板使(shi)(shi)用(yong)(yong)的(de)(de)(de)方法，目(mu)的(de)(de)(de)是(shi)消除坐標對(dui)應的(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏的(de)(de)(de)線xing失真也非(fei)(fei)常厲害(hai)，主要是(shi)因(yin)(yin)為電(dian)(dian)(dian)(dian)容(rong)(rong)屏的(de)(de)(de)計算建立(li)在四個(ge)(ge)電(dian)(dian)(dian)(dian)流(liu)(liu)量與觸(chu)(chu)摸(mo)點到四個(ge)(ge)電(dian)(dian)(dian)(dian)極的(de)(de)(de)距(ju)離(li)成比(bi)例的(de)(de)(de)理想狀(zhuang)態上，實際由(you)(you)于受(shou)環境電(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生(sheng)電(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)(bu)(bu)同人(ren)使(shi)(shi)用(yong)(yong)的(de)(de)(de)影響。
