電(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)的(de)(de)漂移(yi)問題。在(zai)(zai)觸(chu)(chu)摸(mo)屏(ping)產品中(zhong)，電(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)是我們常用(yong)的(de)(de)觸(chu)(chu)摸(mo)屏(ping)方式，那么，對(dui)于電(dian)容(rong)觸(chu)(chu)摸(mo)屏(ping)來(lai)說，其產品本身(shen)應用(yong)比較廣泛，但是也存在(zai)(zai)著(zhu)不少問題。而且(qie)由(you)于現(xian)在(zai)(zai)科(ke)技的(de)(de)發展程度還無法完全解決(jue)觸(chu)(chu)摸(mo)屏(ping)產品在(zai)(zai)相關(guan)原理上出現(xian)的(de)(de)問題，所以對(dui)于這些問題，目前還是普遍存在(zai)(zai)的(de)(de)。
在這里武漢公(gong)司(si)要(yao)(yao)跟大家討論的(de)是(shi)關(guan)于(yu)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)的(de)"漂移"問(wen)題，這個問(wen)題比較常見，也(ye)是(shi)我們在解決產品問(wen)題時主要(yao)(yao)考慮(lv)的(de)方面。 電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)的(de)漂移問(wen)題介(jie)紹！ 武漢觸(chu)(chu)(chu)摸(mo)屏(ping)公(gong)司(si)提示，電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)本(ben)身實(shi)際是(shi)一套精(jing)密(mi)的(de)漏(lou)電(dian)(dian)(dian)傳感器，帶(dai)手套的(de)手不(bu)(bu)能觸(chu)(chu)(chu)摸(mo)，由于(yu)使用電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)方式，導致有漂移現象。電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)和電(dian)(dian)(dian)阻觸(chu)(chu)(chu)摸(mo)屏(ping)都是(shi)電(dian)(dian)(dian)原理工作方式，電(dian)(dian)(dian)工作方式對于(yu)多(duo)(duo)點(dian)(dian)觸(chu)(chu)(chu)摸(mo)，不(bu)(bu)管是(shi)多(duo)(duo)少點(dian)(dian)，也(ye)不(bu)(bu)管是(shi)連(lian)續的(de)還是(shi)不(bu)(bu)連(lian)續的(de)都是(shi)取(qu)多(duo)(duo)點(dian)(dian)觸(chu)(chu)(chu)摸(mo)的(de)中心(xin)點(dian)(dian)判斷(duan)，因(yin)為電(dian)(dian)(dian)流疊加是(shi)分不(bu)(bu)出來(lai)誰是(shi)誰的(de)，沒有辦法。
但是(shi)，目(mu)前(qian)來(lai)說(shuo)，電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)仍然有不少(shao)問題存在(zai)。武漢公司(si)信為(wei)，觸摸(mo)(mo)屏(ping)目(mu)前(qian)的(de)(de)(de)(de)透(tou)明(ming)導電(dian)(dian)(dian)(dian)材料ITO--氧化金屬非常(chang)脆弱(ruo)，觸摸(mo)(mo)幾(ji)下就會損壞(huai)，還不能(neng)(neng)直接(jie)(jie)用(yong)(yong)來(lai)作工(gong)作層。材料的(de)(de)(de)(de)問題一時還難以解決(jue)，只(zhi)好(hao)委(wei)曲(qu)求全：在(zai)外部增加一層非常(chang)薄的(de)(de)(de)(de)堅硬玻璃，它顯然是(shi)不能(neng)(neng)導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)，直流(liu)是(shi)不行了，改(gai)用(yong)(yong)高頻交(jiao)流(liu)信號，靠人的(de)(de)(de)(de)手指(zhi)頭（隔著(zhu)薄玻璃）與工(gong)作面形成的(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)吸走一個(ge)(ge)交(jiao)流(liu)電(dian)(dian)(dian)(dian)流(liu)，這就是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)"名(ming)字的(de)(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)之(zhi)所以出現"漂(piao)移(yi)"的(de)(de)(de)(de)問題，是(shi)因(yin)為(wei)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)方(fang)式是(shi)不穩定的(de)(de)(de)(de)，它直接(jie)(jie)受溫度、濕(shi)度、手指(zhi)濕(shi)潤(run)程度、人體體重、地面干(gan)燥程度影響，受外界(jie)大面積(ji)物體的(de)(de)(de)(de)干(gan)擾也非常(chang)大，帶來(lai)了不穩定的(de)(de)(de)(de)結果，這些都直接(jie)(jie)違背(bei)了作為(wei)觸摸(mo)(mo)屏(ping)這種坐標(biao)系統的(de)(de)(de)(de)基本要求，不可(ke)避免的(de)(de)(de)(de)要產生(sheng)漂(piao)移(yi)，有的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)欲求通過25點校(xiao)(xiao)準(zhun)(zhun)法(fa)甚至(zhi)96點校(xiao)(xiao)準(zhun)(zhun)法(fa)來(lai)解決(jue)漂(piao)移(yi)問題，其實(shi)是(shi)不可(ke)能(neng)(neng)的(de)(de)(de)(de)，漂(piao)移(yi)是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作的(de)(de)(de)(de)這種方(fang)式決(jue)定的(de)(de)(de)(de)，即使(shi)是(shi)在(zai)控制器的(de)(de)(de)(de)單片程序上(shang)利(li)用(yong)(yong)動(dong)態(tai)計(ji)算(suan)和(he)(he)經(jing)驗值查表，也只(zhi)能(neng)(neng)是(shi)治標(biao)不治本。 其實(shi)，多點校(xiao)(xiao)準(zhun)(zhun)法(fa)最早(zao)是(shi)大屏(ping)幕(mu)投(tou)影觸摸(mo)(mo)板使(shi)用(yong)(yong)的(de)(de)(de)(de)方(fang)法(fa)，目(mu)的(de)(de)(de)(de)是(shi)消除坐標(biao)對應的(de)(de)(de)(de)線xing失(shi)真(zhen)，電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)的(de)(de)(de)(de)線xing失(shi)真(zhen)也非常(chang)厲害，主(zhu)要是(shi)因(yin)為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)的(de)(de)(de)(de)計(ji)算(suan)建立在(zai)四個(ge)(ge)電(dian)(dian)(dian)(dian)流(liu)量與觸摸(mo)(mo)點到四個(ge)(ge)電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)距離(li)成比例的(de)(de)(de)(de)理想狀態(tai)上(shang)，實(shi)際由于受環境電(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生(sheng)電(dian)(dian)(dian)(dian)容(rong)(rong)和(he)(he)不同(tong)人使(shi)用(yong)(yong)的(de)(de)(de)(de)影響。
