電(dian)(dian)容觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)的(de)漂移(yi)問(wen)題。在觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)產(chan)(chan)品中，電(dian)(dian)容觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)是(shi)我們常用(yong)的(de)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)方式，那么(me)，對于(yu)電(dian)(dian)容觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)來說，其產(chan)(chan)品本身應用(yong)比較廣泛，但是(shi)也存在著不少問(wen)題。而(er)且由于(yu)現在科(ke)技的(de)發展程度(du)還無(wu)法完全解決(jue)觸(chu)(chu)摸(mo)屏(ping)(ping)(ping)產(chan)(chan)品在相關原理上出現的(de)問(wen)題，所以(yi)對于(yu)這些問(wen)題，目前(qian)還是(shi)普遍存在的(de)。
在這里武漢公司要(yao)跟大(da)家討(tao)論的(de)是(shi)(shi)關于(yu)(yu)電(dian)(dian)容(rong)觸(chu)摸屏的(de)"漂(piao)移"問(wen)(wen)題，這個問(wen)(wen)題比較常見(jian)，也是(shi)(shi)我們在解決產品問(wen)(wen)題時主要(yao)考慮的(de)方面(mian)。 電(dian)(dian)容(rong)觸(chu)摸屏的(de)漂(piao)移問(wen)(wen)題介(jie)紹(shao)！ 武漢觸(chu)摸屏公司提示，電(dian)(dian)容(rong)觸(chu)摸屏本身(shen)實(shi)際是(shi)(shi)一套(tao)(tao)精(jing)密的(de)漏電(dian)(dian)傳(chuan)感器，帶手套(tao)(tao)的(de)手不能觸(chu)摸，由于(yu)(yu)使用電(dian)(dian)容(rong)方式，導致有漂(piao)移現象。電(dian)(dian)容(rong)觸(chu)摸屏和電(dian)(dian)阻(zu)觸(chu)摸屏都是(shi)(shi)電(dian)(dian)原(yuan)理工作方式，電(dian)(dian)工作方式對于(yu)(yu)多點觸(chu)摸，不管是(shi)(shi)多少點，也不管是(shi)(shi)連續(xu)的(de)還(huan)是(shi)(shi)不連續(xu)的(de)都是(shi)(shi)取(qu)多點觸(chu)摸的(de)中心點判斷(duan)，因為電(dian)(dian)流疊加是(shi)(shi)分不出來(lai)誰是(shi)(shi)誰的(de)，沒(mei)有辦法。
但是(shi)(shi)(shi)(shi)，目前來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)仍然有不(bu)(bu)少問(wen)(wen)題(ti)存在(zai)。武漢公司信(xin)(xin)為，觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)目前的(de)(de)(de)(de)(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)材(cai)(cai)料ITO--氧化金屬非(fei)常(chang)脆弱，觸(chu)(chu)(chu)摸(mo)(mo)幾(ji)下就會損壞，還(huan)不(bu)(bu)能(neng)直接(jie)(jie)用來(lai)作(zuo)工作(zuo)層(ceng)。材(cai)(cai)料的(de)(de)(de)(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)一(yi)時還(huan)難(nan)以(yi)解決，只(zhi)好委曲(qu)求(qiu)全：在(zai)外(wai)部增加一(yi)層(ceng)非(fei)常(chang)薄(bo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)堅硬玻璃，它顯(xian)然是(shi)(shi)(shi)(shi)不(bu)(bu)能(neng)導電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)，直流(liu)(liu)是(shi)(shi)(shi)(shi)不(bu)(bu)行了，改用高(gao)頻交流(liu)(liu)信(xin)(xin)號，靠人(ren)的(de)(de)(de)(de)(de)(de)(de)(de)(de)手(shou)指頭（隔(ge)著薄(bo)玻璃）與工作(zuo)面(mian)形成的(de)(de)(de)(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)容(rong)來(lai)吸(xi)走(zou)一(yi)個(ge)交流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，這(zhe)就是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)屏(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)"名字(zi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)由(you)來(lai)。 電(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)之所以(yi)出現"漂移(yi)(yi)"的(de)(de)(de)(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)，是(shi)(shi)(shi)(shi)因為耦合電(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)式是(shi)(shi)(shi)(shi)不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de)(de)(de)，它直接(jie)(jie)受溫(wen)度(du)、濕(shi)度(du)、手(shou)指濕(shi)潤(run)程度(du)、人(ren)體體重(zhong)、地面(mian)干燥程度(du)影(ying)響(xiang)，受外(wai)界大面(mian)積(ji)物體的(de)(de)(de)(de)(de)(de)(de)(de)(de)干擾也非(fei)常(chang)大，帶來(lai)了不(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)(de)(de)(de)結果(guo)，這(zhe)些都直接(jie)(jie)違背了作(zuo)為觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)這(zhe)種坐(zuo)標系統的(de)(de)(de)(de)(de)(de)(de)(de)(de)基本要求(qiu)，不(bu)(bu)可避免的(de)(de)(de)(de)(de)(de)(de)(de)(de)要產生(sheng)漂移(yi)(yi)，有的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)欲求(qiu)通過25點(dian)校準(zhun)(zhun)法(fa)(fa)甚至(zhi)96點(dian)校準(zhun)(zhun)法(fa)(fa)來(lai)解決漂移(yi)(yi)問(wen)(wen)題(ti)，其實(shi)是(shi)(shi)(shi)(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)，漂移(yi)(yi)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)工作(zuo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)這(zhe)種方(fang)式決定的(de)(de)(de)(de)(de)(de)(de)(de)(de)，即使(shi)是(shi)(shi)(shi)(shi)在(zai)控制器的(de)(de)(de)(de)(de)(de)(de)(de)(de)單片程序上(shang)利用動(dong)態計算和(he)經驗值查表，也只(zhi)能(neng)是(shi)(shi)(shi)(shi)治標不(bu)(bu)治本。 其實(shi)，多點(dian)校準(zhun)(zhun)法(fa)(fa)最(zui)早是(shi)(shi)(shi)(shi)大屏(ping)幕投影(ying)觸(chu)(chu)(chu)摸(mo)(mo)板使(shi)用的(de)(de)(de)(de)(de)(de)(de)(de)(de)方(fang)法(fa)(fa)，目的(de)(de)(de)(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐(zuo)標對應的(de)(de)(de)(de)(de)(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)的(de)(de)(de)(de)(de)(de)(de)(de)(de)線xing失真也非(fei)常(chang)厲害，主要是(shi)(shi)(shi)(shi)因為電(dian)(dian)(dian)(dian)(dian)容(rong)屏(ping)的(de)(de)(de)(de)(de)(de)(de)(de)(de)計算建立在(zai)四個(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)量與觸(chu)(chu)(chu)摸(mo)(mo)點(dian)到四個(ge)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)(de)(de)(de)(de)(de)理想(xiang)狀態上(shang)，實(shi)際由(you)于受環境(jing)電(dian)(dian)(dian)(dian)(dian)容(rong)、線路寄生(sheng)電(dian)(dian)(dian)(dian)(dian)容(rong)和(he)不(bu)(bu)同人(ren)使(shi)用的(de)(de)(de)(de)(de)(de)(de)(de)(de)影(ying)響(xiang)。
