電(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)的(de)漂移問題。在(zai)觸(chu)(chu)摸(mo)屏(ping)產(chan)品(pin)中，電(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)是(shi)我(wo)們常用(yong)的(de)觸(chu)(chu)摸(mo)屏(ping)方式，那么，對于(yu)電(dian)容(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)來說，其(qi)產(chan)品(pin)本身(shen)應用(yong)比(bi)較廣泛，但是(shi)也存在(zai)著(zhu)不少問題。而且由(you)于(yu)現在(zai)科技的(de)發展程(cheng)度還無(wu)法完全解決(jue)觸(chu)(chu)摸(mo)屏(ping)產(chan)品(pin)在(zai)相關(guan)原理上出(chu)現的(de)問題，所以對于(yu)這些問題，目前還是(shi)普遍存在(zai)的(de)。
在這里武漢公司(si)要跟(gen)大家討(tao)論的是(shi)關于電(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)的"漂(piao)移"問題，這個問題比較(jiao)常見，也(ye)是(shi)我(wo)們在解決產品問題時主要考慮的方(fang)面。 電(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)的漂(piao)移問題介(jie)紹！ 武漢觸(chu)摸(mo)(mo)(mo)屏(ping)公司(si)提示，電(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)本身實(shi)際是(shi)一套(tao)精密的漏電(dian)(dian)傳(chuan)感器，帶手(shou)套(tao)的手(shou)不能觸(chu)摸(mo)(mo)(mo)，由于使用電(dian)(dian)容(rong)方(fang)式，導致有漂(piao)移現象。電(dian)(dian)容(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)和電(dian)(dian)阻(zu)觸(chu)摸(mo)(mo)(mo)屏(ping)都(dou)是(shi)電(dian)(dian)原理工作(zuo)方(fang)式，電(dian)(dian)工作(zuo)方(fang)式對(dui)于多點觸(chu)摸(mo)(mo)(mo)，不管是(shi)多少點，也(ye)不管是(shi)連續的還是(shi)不連續的都(dou)是(shi)取多點觸(chu)摸(mo)(mo)(mo)的中心點判(pan)斷，因為電(dian)(dian)流(liu)疊(die)加是(shi)分(fen)不出來誰是(shi)誰的，沒有辦法。
但是(shi)(shi)(shi)(shi)，目前來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)仍然有不(bu)少問題(ti)存在(zai)(zai)。武漢公司信(xin)為，觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)目前的(de)(de)(de)(de)(de)(de)透(tou)明導電(dian)(dian)(dian)(dian)(dian)(dian)材料(liao)ITO--氧化金(jin)屬非(fei)常(chang)脆弱(ruo)，觸摸(mo)(mo)(mo)(mo)幾下就(jiu)會損壞，還不(bu)能(neng)(neng)直接(jie)用來(lai)作工作層。材料(liao)的(de)(de)(de)(de)(de)(de)問題(ti)一時還難以(yi)解(jie)決(jue)，只好委曲求(qiu)(qiu)全：在(zai)(zai)外(wai)部(bu)增加一層非(fei)常(chang)薄的(de)(de)(de)(de)(de)(de)堅硬玻璃，它顯(xian)然是(shi)(shi)(shi)(shi)不(bu)能(neng)(neng)導電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)，直流(liu)是(shi)(shi)(shi)(shi)不(bu)行(xing)了，改用高頻交流(liu)信(xin)號，靠(kao)人(ren)的(de)(de)(de)(de)(de)(de)手指頭（隔(ge)著薄玻璃）與工作面形成(cheng)的(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)吸走一個(ge)交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這(zhe)就(jiu)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)之所以(yi)出現"漂(piao)(piao)移"的(de)(de)(de)(de)(de)(de)問題(ti)，是(shi)(shi)(shi)(shi)因為耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)(de)方式是(shi)(shi)(shi)(shi)不(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)，它直接(jie)受(shou)溫(wen)度(du)、濕度(du)、手指濕潤程(cheng)度(du)、人(ren)體體重、地面干燥(zao)程(cheng)度(du)影響，受(shou)外(wai)界(jie)大面積(ji)物體的(de)(de)(de)(de)(de)(de)干擾也非(fei)常(chang)大，帶來(lai)了不(bu)穩定(ding)的(de)(de)(de)(de)(de)(de)結果(guo)，這(zhe)些都直接(jie)違背了作為觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)這(zhe)種坐標系統的(de)(de)(de)(de)(de)(de)基本要求(qiu)(qiu)，不(bu)可避免(mian)的(de)(de)(de)(de)(de)(de)要產(chan)生漂(piao)(piao)移，有的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)欲求(qiu)(qiu)通過25點校準法(fa)甚至96點校準法(fa)來(lai)解(jie)決(jue)漂(piao)(piao)移問題(ti)，其實(shi)是(shi)(shi)(shi)(shi)不(bu)可能(neng)(neng)的(de)(de)(de)(de)(de)(de)，漂(piao)(piao)移是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)工作的(de)(de)(de)(de)(de)(de)這(zhe)種方式決(jue)定(ding)的(de)(de)(de)(de)(de)(de)，即使是(shi)(shi)(shi)(shi)在(zai)(zai)控制器的(de)(de)(de)(de)(de)(de)單片程(cheng)序(xu)上利用動態(tai)計(ji)(ji)算(suan)和經驗值查表(biao)，也只能(neng)(neng)是(shi)(shi)(shi)(shi)治標不(bu)治本。 其實(shi)，多點校準法(fa)最(zui)早是(shi)(shi)(shi)(shi)大屏(ping)(ping)幕投(tou)影觸摸(mo)(mo)(mo)(mo)板使用的(de)(de)(de)(de)(de)(de)方法(fa)，目的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消(xiao)除坐標對應的(de)(de)(de)(de)(de)(de)線(xian)xing失(shi)真，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)(mo)(mo)屏(ping)(ping)的(de)(de)(de)(de)(de)(de)線(xian)xing失(shi)真也非(fei)常(chang)厲害，主要是(shi)(shi)(shi)(shi)因為電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)(de)計(ji)(ji)算(suan)建立在(zai)(zai)四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量與觸摸(mo)(mo)(mo)(mo)點到四個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)距(ju)離成(cheng)比例(li)的(de)(de)(de)(de)(de)(de)理(li)想狀態(tai)上，實(shi)際由于受(shou)環境電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)、線(xian)路寄生電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)同人(ren)使用的(de)(de)(de)(de)(de)(de)影響。
