電容(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)的(de)漂(piao)移(yi)問(wen)題(ti)。在(zai)(zai)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)產品中(zhong)，電容(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)是我們常用(yong)的(de)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)方式，那(nei)么，對于電容(rong)(rong)觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)來說，其產品本身應用(yong)比較廣泛，但(dan)是也存(cun)在(zai)(zai)著不少問(wen)題(ti)。而且由于現在(zai)(zai)科技的(de)發展程度還無法完全解決觸(chu)(chu)(chu)(chu)摸(mo)(mo)屏(ping)產品在(zai)(zai)相關原理上出現的(de)問(wen)題(ti)，所(suo)以對于這些問(wen)題(ti)，目前還是普遍存(cun)在(zai)(zai)的(de)。
在這(zhe)(zhe)里武漢(han)公司要跟大家討論的(de)(de)(de)是(shi)(shi)(shi)關于(yu)電(dian)(dian)容觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)的(de)(de)(de)"漂移"問(wen)題(ti)，這(zhe)(zhe)個問(wen)題(ti)比較常見，也(ye)是(shi)(shi)(shi)我們在解決產品問(wen)題(ti)時主(zhu)要考慮的(de)(de)(de)方(fang)(fang)面(mian)。 電(dian)(dian)容觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)的(de)(de)(de)漂移問(wen)題(ti)介(jie)紹！ 武漢(han)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)公司提示，電(dian)(dian)容觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)本(ben)身實際是(shi)(shi)(shi)一(yi)套精密的(de)(de)(de)漏電(dian)(dian)傳感器，帶手套的(de)(de)(de)手不能(neng)觸(chu)摸(mo)(mo)(mo)，由于(yu)使用(yong)電(dian)(dian)容方(fang)(fang)式，導致(zhi)有漂移現(xian)象。電(dian)(dian)容觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)和電(dian)(dian)阻觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)都(dou)是(shi)(shi)(shi)電(dian)(dian)原理(li)工(gong)作方(fang)(fang)式，電(dian)(dian)工(gong)作方(fang)(fang)式對(dui)于(yu)多點(dian)觸(chu)摸(mo)(mo)(mo)，不管(guan)是(shi)(shi)(shi)多少點(dian)，也(ye)不管(guan)是(shi)(shi)(shi)連續的(de)(de)(de)還是(shi)(shi)(shi)不連續的(de)(de)(de)都(dou)是(shi)(shi)(shi)取(qu)多點(dian)觸(chu)摸(mo)(mo)(mo)的(de)(de)(de)中(zhong)心點(dian)判斷(duan)，因為(wei)電(dian)(dian)流疊加(jia)是(shi)(shi)(shi)分不出來誰是(shi)(shi)(shi)誰的(de)(de)(de)，沒有辦法。
但(dan)是(shi)，目(mu)(mu)前來說，電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)仍然有(you)(you)不少問(wen)題(ti)存在。武(wu)漢(han)公司(si)信(xin)為，觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)目(mu)(mu)前的(de)(de)(de)(de)(de)透(tou)明導電(dian)(dian)材料ITO--氧化金(jin)屬非(fei)(fei)常(chang)脆弱，觸(chu)(chu)摸(mo)(mo)幾下就會損壞，還不能(neng)直(zhi)(zhi)(zhi)接(jie)(jie)用(yong)(yong)來作工(gong)作層(ceng)。材料的(de)(de)(de)(de)(de)問(wen)題(ti)一(yi)時還難(nan)以(yi)解決，只(zhi)(zhi)好(hao)委曲求(qiu)全：在外部增加一(yi)層(ceng)非(fei)(fei)常(chang)薄(bo)的(de)(de)(de)(de)(de)堅硬玻(bo)璃(li)(li)，它顯然是(shi)不能(neng)導電(dian)(dian)的(de)(de)(de)(de)(de)，直(zhi)(zhi)(zhi)流(liu)是(shi)不行了(le)，改(gai)用(yong)(yong)高(gao)頻交流(liu)信(xin)號，靠人的(de)(de)(de)(de)(de)手指頭（隔著薄(bo)玻(bo)璃(li)(li)）與(yu)工(gong)作面形成(cheng)的(de)(de)(de)(de)(de)耦(ou)合電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)來吸走一(yi)個交流(liu)電(dian)(dian)流(liu)，這(zhe)就是(shi)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)"名字(zi)的(de)(de)(de)(de)(de)由來。 電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)之所以(yi)出現"漂(piao)移(yi)(yi)"的(de)(de)(de)(de)(de)問(wen)題(ti)，是(shi)因(yin)為耦(ou)合電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)方式(shi)是(shi)不穩(wen)定(ding)的(de)(de)(de)(de)(de)，它直(zhi)(zhi)(zhi)接(jie)(jie)受溫度、濕度、手指濕潤程度、人體(ti)體(ti)重、地(di)面干(gan)燥程度影響，受外界(jie)大面積物體(ti)的(de)(de)(de)(de)(de)干(gan)擾也非(fei)(fei)常(chang)大，帶來了(le)不穩(wen)定(ding)的(de)(de)(de)(de)(de)結果，這(zhe)些都(dou)直(zhi)(zhi)(zhi)接(jie)(jie)違背(bei)了(le)作為觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)這(zhe)種(zhong)坐標系(xi)統的(de)(de)(de)(de)(de)基本要(yao)(yao)求(qiu)，不可避免(mian)的(de)(de)(de)(de)(de)要(yao)(yao)產生漂(piao)移(yi)(yi)，有(you)(you)的(de)(de)(de)(de)(de)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)欲求(qiu)通過25點校準(zhun)(zhun)法甚至(zhi)96點校準(zhun)(zhun)法來解決漂(piao)移(yi)(yi)問(wen)題(ti)，其實(shi)是(shi)不可能(neng)的(de)(de)(de)(de)(de)，漂(piao)移(yi)(yi)是(shi)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)工(gong)作的(de)(de)(de)(de)(de)這(zhe)種(zhong)方式(shi)決定(ding)的(de)(de)(de)(de)(de)，即使(shi)(shi)是(shi)在控(kong)制(zhi)器的(de)(de)(de)(de)(de)單片(pian)程序(xu)上(shang)利用(yong)(yong)動態計算和經驗值查表，也只(zhi)(zhi)能(neng)是(shi)治標不治本。 其實(shi)，多點校準(zhun)(zhun)法最(zui)早是(shi)大屏(ping)(ping)幕投影觸(chu)(chu)摸(mo)(mo)板使(shi)(shi)用(yong)(yong)的(de)(de)(de)(de)(de)方法，目(mu)(mu)的(de)(de)(de)(de)(de)是(shi)消除坐標對(dui)應的(de)(de)(de)(de)(de)線xing失(shi)真，電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)(ping)的(de)(de)(de)(de)(de)線xing失(shi)真也非(fei)(fei)常(chang)厲害，主(zhu)要(yao)(yao)是(shi)因(yin)為電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)計算建(jian)立在四個電(dian)(dian)流(liu)量與(yu)觸(chu)(chu)摸(mo)(mo)點到四個電(dian)(dian)極(ji)的(de)(de)(de)(de)(de)距(ju)離成(cheng)比(bi)例的(de)(de)(de)(de)(de)理想狀態上(shang)，實(shi)際由于受環境電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)、線路寄生電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)和不同人使(shi)(shi)用(yong)(yong)的(de)(de)(de)(de)(de)影響。
