電(dian)容(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)的(de)漂移問題(ti)。在觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)產品中，電(dian)容(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)是(shi)(shi)我們常用(yong)的(de)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)方式，那么，對于(yu)(yu)電(dian)容(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)來說，其(qi)產品本身應用(yong)比較廣(guang)泛，但(dan)是(shi)(shi)也存在著不少問題(ti)。而且由于(yu)(yu)現在科技(ji)的(de)發展(zhan)程(cheng)度還無法完全解(jie)決觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)產品在相關原理上出現的(de)問題(ti)，所以對于(yu)(yu)這(zhe)些問題(ti)，目前(qian)還是(shi)(shi)普遍(bian)存在的(de)。
在這(zhe)里武漢公司(si)要跟大家(jia)討論(lun)的(de)是(shi)關于(yu)電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)的(de)"漂移(yi)(yi)"問(wen)(wen)題，這(zhe)個問(wen)(wen)題比較常見(jian)，也是(shi)我們在解決產(chan)品(pin)問(wen)(wen)題時主要考慮的(de)方(fang)面。 電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)的(de)漂移(yi)(yi)問(wen)(wen)題介紹(shao)！ 武漢觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)公司(si)提示，電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)本身實際是(shi)一套(tao)精密的(de)漏電(dian)(dian)(dian)傳感器(qi)，帶手套(tao)的(de)手不能(neng)觸(chu)(chu)(chu)(chu)摸(mo)(mo)，由于(yu)使用電(dian)(dian)(dian)容方(fang)式，導致(zhi)有漂移(yi)(yi)現象(xiang)。電(dian)(dian)(dian)容觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)和電(dian)(dian)(dian)阻觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)都(dou)是(shi)電(dian)(dian)(dian)原理工作方(fang)式，電(dian)(dian)(dian)工作方(fang)式對于(yu)多點(dian)觸(chu)(chu)(chu)(chu)摸(mo)(mo)，不管是(shi)多少點(dian)，也不管是(shi)連(lian)續(xu)的(de)還是(shi)不連(lian)續(xu)的(de)都(dou)是(shi)取多點(dian)觸(chu)(chu)(chu)(chu)摸(mo)(mo)的(de)中心(xin)點(dian)判(pan)斷，因為電(dian)(dian)(dian)流疊加(jia)是(shi)分不出來誰是(shi)誰的(de)，沒(mei)有辦(ban)法。
但(dan)是(shi)(shi)，目(mu)(mu)前(qian)來(lai)(lai)說，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)仍然有不(bu)少問(wen)題(ti)存在(zai)。武漢(han)公司信為(wei)，觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)目(mu)(mu)前(qian)的(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)材(cai)料ITO--氧(yang)化金屬非(fei)常脆弱，觸(chu)(chu)摸(mo)(mo)(mo)幾(ji)下就會損(sun)壞(huai)，還不(bu)能(neng)直(zhi)(zhi)(zhi)接用(yong)來(lai)(lai)作工(gong)作層。材(cai)料的(de)(de)(de)(de)問(wen)題(ti)一(yi)時還難以解決，只好(hao)委曲求全(quan)：在(zai)外(wai)部增加一(yi)層非(fei)常薄的(de)(de)(de)(de)堅硬(ying)玻(bo)璃，它顯然是(shi)(shi)不(bu)能(neng)導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)，直(zhi)(zhi)(zhi)流是(shi)(shi)不(bu)行了(le)(le)，改用(yong)高頻交流信號，靠(kao)人(ren)的(de)(de)(de)(de)手指頭（隔著(zhu)薄玻(bo)璃）與工(gong)作面(mian)(mian)形成的(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)(lai)吸走(zou)一(yi)個(ge)交流電(dian)(dian)(dian)(dian)流，這就是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)"名字(zi)的(de)(de)(de)(de)由來(lai)(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)之所以出現(xian)"漂移(yi)"的(de)(de)(de)(de)問(wen)題(ti)，是(shi)(shi)因為(wei)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)方(fang)式(shi)是(shi)(shi)不(bu)穩(wen)(wen)定(ding)(ding)的(de)(de)(de)(de)，它直(zhi)(zhi)(zhi)接受溫度(du)、濕度(du)、手指濕潤程度(du)、人(ren)體(ti)體(ti)重、地面(mian)(mian)干燥程度(du)影響，受外(wai)界大面(mian)(mian)積物(wu)體(ti)的(de)(de)(de)(de)干擾也非(fei)常大，帶來(lai)(lai)了(le)(le)不(bu)穩(wen)(wen)定(ding)(ding)的(de)(de)(de)(de)結(jie)果，這些都直(zhi)(zhi)(zhi)接違背了(le)(le)作為(wei)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)這種坐標系統的(de)(de)(de)(de)基本(ben)要求，不(bu)可避(bi)免的(de)(de)(de)(de)要產生漂移(yi)，有的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)欲求通過25點(dian)校準法甚至96點(dian)校準法來(lai)(lai)解決漂移(yi)問(wen)題(ti)，其實(shi)是(shi)(shi)不(bu)可能(neng)的(de)(de)(de)(de)，漂移(yi)是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作的(de)(de)(de)(de)這種方(fang)式(shi)決定(ding)(ding)的(de)(de)(de)(de)，即(ji)使(shi)是(shi)(shi)在(zai)控制(zhi)器(qi)的(de)(de)(de)(de)單(dan)片程序上(shang)利用(yong)動態(tai)計算和(he)經(jing)驗(yan)值查(cha)表，也只能(neng)是(shi)(shi)治(zhi)標不(bu)治(zhi)本(ben)。 其實(shi)，多點(dian)校準法最早是(shi)(shi)大屏(ping)(ping)(ping)幕投影觸(chu)(chu)摸(mo)(mo)(mo)板使(shi)用(yong)的(de)(de)(de)(de)方(fang)法，目(mu)(mu)的(de)(de)(de)(de)是(shi)(shi)消除坐標對應(ying)的(de)(de)(de)(de)線(xian)xing失真，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)線(xian)xing失真也非(fei)常厲害，主要是(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)計算建立在(zai)四個(ge)電(dian)(dian)(dian)(dian)流量與觸(chu)(chu)摸(mo)(mo)(mo)點(dian)到四個(ge)電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)距離成比例的(de)(de)(de)(de)理(li)想狀態(tai)上(shang)，實(shi)際(ji)由于受環境電(dian)(dian)(dian)(dian)容(rong)(rong)、線(xian)路寄生電(dian)(dian)(dian)(dian)容(rong)(rong)和(he)不(bu)同人(ren)使(shi)用(yong)的(de)(de)(de)(de)影響。
