電(dian)容(rong)觸摸(mo)(mo)屏(ping)(ping)的漂(piao)移問題(ti)。在(zai)觸摸(mo)(mo)屏(ping)(ping)產品(pin)中，電(dian)容(rong)觸摸(mo)(mo)屏(ping)(ping)是(shi)我們常用(yong)的觸摸(mo)(mo)屏(ping)(ping)方(fang)式，那么，對(dui)于電(dian)容(rong)觸摸(mo)(mo)屏(ping)(ping)來說(shuo)，其產品(pin)本身(shen)應用(yong)比較廣泛，但是(shi)也存在(zai)著不(bu)少問題(ti)。而(er)且由于現(xian)(xian)在(zai)科技的發展(zhan)程度還無(wu)法完全解決觸摸(mo)(mo)屏(ping)(ping)產品(pin)在(zai)相關原(yuan)理上(shang)出現(xian)(xian)的問題(ti)，所(suo)以對(dui)于這些問題(ti)，目(mu)前(qian)還是(shi)普遍存在(zai)的。
在這里(li)武漢公(gong)(gong)司(si)要跟大家討論的是(shi)關于(yu)(yu)電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的"漂(piao)移(yi)(yi)"問(wen)題，這個(ge)問(wen)題比較常見，也是(shi)我們在解決(jue)產品(pin)問(wen)題時(shi)主要考慮的方(fang)面。 電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)的漂(piao)移(yi)(yi)問(wen)題介紹！ 武漢觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)公(gong)(gong)司(si)提(ti)示，電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)本(ben)身實際是(shi)一套精密的漏(lou)電(dian)(dian)傳感器，帶手套的手不(bu)(bu)能觸(chu)(chu)摸(mo)(mo)(mo)，由于(yu)(yu)使用電(dian)(dian)容方(fang)式，導致有漂(piao)移(yi)(yi)現象。電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)和電(dian)(dian)阻觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)都是(shi)電(dian)(dian)原理工作(zuo)方(fang)式，電(dian)(dian)工作(zuo)方(fang)式對于(yu)(yu)多(duo)點(dian)觸(chu)(chu)摸(mo)(mo)(mo)，不(bu)(bu)管(guan)是(shi)多(duo)少點(dian)，也不(bu)(bu)管(guan)是(shi)連續的還是(shi)不(bu)(bu)連續的都是(shi)取多(duo)點(dian)觸(chu)(chu)摸(mo)(mo)(mo)的中心點(dian)判斷，因為電(dian)(dian)流疊加是(shi)分不(bu)(bu)出來(lai)誰(shui)是(shi)誰(shui)的，沒有辦(ban)法。
但是(shi)(shi)(shi)(shi)，目(mu)前(qian)來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)仍然有不少(shao)問(wen)題(ti)存(cun)在。武漢公司信為(wei)，觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)目(mu)前(qian)的(de)(de)(de)(de)(de)透明(ming)導電(dian)(dian)(dian)(dian)(dian)(dian)材料ITO--氧化金(jin)屬非(fei)常(chang)脆弱，觸(chu)(chu)(chu)(chu)摸(mo)(mo)幾下就會損壞，還不能(neng)(neng)(neng)直(zhi)接(jie)用來(lai)作(zuo)工作(zuo)層(ceng)。材料的(de)(de)(de)(de)(de)問(wen)題(ti)一(yi)時還難以解決，只好委曲求全：在外(wai)部增加(jia)一(yi)層(ceng)非(fei)常(chang)薄(bo)的(de)(de)(de)(de)(de)堅(jian)硬玻璃，它顯然是(shi)(shi)(shi)(shi)不能(neng)(neng)(neng)導電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)，直(zhi)流(liu)(liu)(liu)是(shi)(shi)(shi)(shi)不行了(le)，改用高(gao)頻交流(liu)(liu)(liu)信號，靠人(ren)的(de)(de)(de)(de)(de)手指(zhi)頭（隔著薄(bo)玻璃）與工作(zuo)面形成(cheng)(cheng)的(de)(de)(de)(de)(de)耦(ou)合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)吸走一(yi)個(ge)(ge)交流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，這就是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)(de)由(you)來(lai)。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)之所以出現"漂移"的(de)(de)(de)(de)(de)問(wen)題(ti)，是(shi)(shi)(shi)(shi)因(yin)為(wei)耦(ou)合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)(de)方式是(shi)(shi)(shi)(shi)不穩(wen)(wen)定的(de)(de)(de)(de)(de)，它直(zhi)接(jie)受溫度、濕(shi)度、手指(zhi)濕(shi)潤程(cheng)度、人(ren)體體重、地面干燥(zao)程(cheng)度影(ying)(ying)響，受外(wai)界大(da)面積物體的(de)(de)(de)(de)(de)干擾也非(fei)常(chang)大(da)，帶來(lai)了(le)不穩(wen)(wen)定的(de)(de)(de)(de)(de)結果，這些都直(zhi)接(jie)違背了(le)作(zuo)為(wei)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)這種(zhong)坐標系統的(de)(de)(de)(de)(de)基本要(yao)求，不可避免的(de)(de)(de)(de)(de)要(yao)產生漂移，有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)欲(yu)求通過25點(dian)校準(zhun)(zhun)法(fa)甚(shen)至96點(dian)校準(zhun)(zhun)法(fa)來(lai)解決漂移問(wen)題(ti)，其實(shi)是(shi)(shi)(shi)(shi)不可能(neng)(neng)(neng)的(de)(de)(de)(de)(de)，漂移是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工作(zuo)的(de)(de)(de)(de)(de)這種(zhong)方式決定的(de)(de)(de)(de)(de)，即(ji)使是(shi)(shi)(shi)(shi)在控制(zhi)器的(de)(de)(de)(de)(de)單片程(cheng)序上(shang)利用動態(tai)計算(suan)和(he)經驗值查表(biao)，也只能(neng)(neng)(neng)是(shi)(shi)(shi)(shi)治(zhi)標不治(zhi)本。 其實(shi)，多點(dian)校準(zhun)(zhun)法(fa)最早是(shi)(shi)(shi)(shi)大(da)屏(ping)(ping)(ping)幕投影(ying)(ying)觸(chu)(chu)(chu)(chu)摸(mo)(mo)板使用的(de)(de)(de)(de)(de)方法(fa)，目(mu)的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐標對應(ying)的(de)(de)(de)(de)(de)線(xian)(xian)xing失真，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)線(xian)(xian)xing失真也非(fei)常(chang)厲(li)害(hai)，主要(yao)是(shi)(shi)(shi)(shi)因(yin)為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)計算(suan)建立在四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)量(liang)與觸(chu)(chu)(chu)(chu)摸(mo)(mo)點(dian)到(dao)四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距離成(cheng)(cheng)比例(li)的(de)(de)(de)(de)(de)理想狀態(tai)上(shang)，實(shi)際由(you)于受環境電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線(xian)(xian)路寄生電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和(he)不同人(ren)使用的(de)(de)(de)(de)(de)影(ying)(ying)響。
