電容觸摸(mo)(mo)(mo)屏(ping)(ping)的漂移問(wen)題(ti)(ti)。在(zai)觸摸(mo)(mo)(mo)屏(ping)(ping)產品(pin)(pin)中(zhong)，電容觸摸(mo)(mo)(mo)屏(ping)(ping)是我們常用(yong)的觸摸(mo)(mo)(mo)屏(ping)(ping)方(fang)式，那么，對于電容觸摸(mo)(mo)(mo)屏(ping)(ping)來說，其產品(pin)(pin)本身應用(yong)比較(jiao)廣泛，但是也存在(zai)著不少問(wen)題(ti)(ti)。而且(qie)由(you)于現(xian)在(zai)科技(ji)的發展程度還無(wu)法完全解決觸摸(mo)(mo)(mo)屏(ping)(ping)產品(pin)(pin)在(zai)相(xiang)關原理上出現(xian)的問(wen)題(ti)(ti)，所以對于這些(xie)問(wen)題(ti)(ti)，目(mu)前還是普遍(bian)存在(zai)的。
在(zai)這(zhe)里(li)武(wu)漢公司(si)要(yao)跟大家討論的(de)(de)(de)(de)是(shi)關于電(dian)容觸摸(mo)屏(ping)(ping)的(de)(de)(de)(de)"漂移(yi)"問題，這(zhe)個問題比較常(chang)見，也是(shi)我們在(zai)解決產品(pin)問題時(shi)主要(yao)考(kao)慮的(de)(de)(de)(de)方面。 電(dian)容觸摸(mo)屏(ping)(ping)的(de)(de)(de)(de)漂移(yi)問題介紹！ 武(wu)漢觸摸(mo)屏(ping)(ping)公司(si)提示(shi)，電(dian)容觸摸(mo)屏(ping)(ping)本身(shen)實際是(shi)一套(tao)(tao)精(jing)密的(de)(de)(de)(de)漏電(dian)傳感器，帶(dai)手套(tao)(tao)的(de)(de)(de)(de)手不(bu)(bu)能觸摸(mo)，由(you)于使(shi)用電(dian)容方式，導致有漂移(yi)現象。電(dian)容觸摸(mo)屏(ping)(ping)和電(dian)阻觸摸(mo)屏(ping)(ping)都是(shi)電(dian)原理工作(zuo)方式，電(dian)工作(zuo)方式對于多(duo)(duo)點觸摸(mo)，不(bu)(bu)管(guan)是(shi)多(duo)(duo)少點，也不(bu)(bu)管(guan)是(shi)連續的(de)(de)(de)(de)還是(shi)不(bu)(bu)連續的(de)(de)(de)(de)都是(shi)取多(duo)(duo)點觸摸(mo)的(de)(de)(de)(de)中(zhong)心點判斷，因為電(dian)流疊(die)加(jia)是(shi)分不(bu)(bu)出來誰是(shi)誰的(de)(de)(de)(de)，沒有辦法。
但是(shi)(shi)(shi)(shi)，目前來(lai)說(shuo)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)摸屏(ping)(ping)(ping)(ping)仍然有(you)不(bu)(bu)(bu)(bu)少問題存在(zai)(zai)。武漢公司(si)信(xin)為(wei)，觸(chu)摸屏(ping)(ping)(ping)(ping)目前的(de)(de)(de)(de)(de)(de)透明(ming)導電(dian)(dian)(dian)(dian)材料ITO--氧化金屬非(fei)(fei)常(chang)脆(cui)弱，觸(chu)摸幾(ji)下就會(hui)損(sun)壞，還(huan)不(bu)(bu)(bu)(bu)能(neng)(neng)直(zhi)接用(yong)來(lai)作(zuo)工(gong)作(zuo)層(ceng)。材料的(de)(de)(de)(de)(de)(de)問題一時還(huan)難以解(jie)(jie)決(jue)(jue)，只好委曲(qu)求(qiu)全：在(zai)(zai)外(wai)(wai)部(bu)增加一層(ceng)非(fei)(fei)常(chang)薄的(de)(de)(de)(de)(de)(de)堅硬玻(bo)璃，它(ta)(ta)顯(xian)然是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)能(neng)(neng)導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)，直(zhi)流(liu)是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)行(xing)了，改用(yong)高頻交流(liu)信(xin)號(hao)，靠人(ren)的(de)(de)(de)(de)(de)(de)手(shou)指頭（隔著(zhu)薄玻(bo)璃）與工(gong)作(zuo)面形(xing)成(cheng)的(de)(de)(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)來(lai)吸走一個交流(liu)電(dian)(dian)(dian)(dian)流(liu)，這(zhe)就是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)屏(ping)(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)"名(ming)字的(de)(de)(de)(de)(de)(de)由來(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)摸屏(ping)(ping)(ping)(ping)之(zhi)所以出現"漂(piao)移(yi)(yi)"的(de)(de)(de)(de)(de)(de)問題，是(shi)(shi)(shi)(shi)因為(wei)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)方(fang)式(shi)是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)，它(ta)(ta)直(zhi)接受溫度、濕度、手(shou)指濕潤(run)程(cheng)度、人(ren)體體重、地面干(gan)(gan)燥(zao)程(cheng)度影響，受外(wai)(wai)界大(da)面積物(wu)體的(de)(de)(de)(de)(de)(de)干(gan)(gan)擾也非(fei)(fei)常(chang)大(da)，帶來(lai)了不(bu)(bu)(bu)(bu)穩定的(de)(de)(de)(de)(de)(de)結果，這(zhe)些都直(zhi)接違背了作(zuo)為(wei)觸(chu)摸屏(ping)(ping)(ping)(ping)這(zhe)種坐標(biao)系統(tong)的(de)(de)(de)(de)(de)(de)基本要求(qiu)，不(bu)(bu)(bu)(bu)可避免(mian)的(de)(de)(de)(de)(de)(de)要產生(sheng)(sheng)漂(piao)移(yi)(yi)，有(you)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)摸屏(ping)(ping)(ping)(ping)欲求(qiu)通過25點(dian)(dian)校(xiao)(xiao)準(zhun)法(fa)甚至96點(dian)(dian)校(xiao)(xiao)準(zhun)法(fa)來(lai)解(jie)(jie)決(jue)(jue)漂(piao)移(yi)(yi)問題，其(qi)(qi)實(shi)(shi)是(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)可能(neng)(neng)的(de)(de)(de)(de)(de)(de)，漂(piao)移(yi)(yi)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)工(gong)作(zuo)的(de)(de)(de)(de)(de)(de)這(zhe)種方(fang)式(shi)決(jue)(jue)定的(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(dan)片程(cheng)序(xu)上(shang)(shang)利(li)用(yong)動態(tai)計算(suan)和經(jing)驗值查表(biao)，也只能(neng)(neng)是(shi)(shi)(shi)(shi)治(zhi)標(biao)不(bu)(bu)(bu)(bu)治(zhi)本。 其(qi)(qi)實(shi)(shi)，多(duo)點(dian)(dian)校(xiao)(xiao)準(zhun)法(fa)最早是(shi)(shi)(shi)(shi)大(da)屏(ping)(ping)(ping)(ping)幕投影觸(chu)摸板使用(yong)的(de)(de)(de)(de)(de)(de)方(fang)法(fa)，目的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐標(biao)對應(ying)的(de)(de)(de)(de)(de)(de)線(xian)(xian)xing失真(zhen)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)觸(chu)摸屏(ping)(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)線(xian)(xian)xing失真(zhen)也非(fei)(fei)常(chang)厲(li)害，主要是(shi)(shi)(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)屏(ping)(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)計算(suan)建(jian)立在(zai)(zai)四個電(dian)(dian)(dian)(dian)流(liu)量與觸(chu)摸點(dian)(dian)到四個電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)距離成(cheng)比例的(de)(de)(de)(de)(de)(de)理想狀(zhuang)態(tai)上(shang)(shang)，實(shi)(shi)際由于受環境電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)、線(xian)(xian)路寄(ji)生(sheng)(sheng)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)和不(bu)(bu)(bu)(bu)同人(ren)使用(yong)的(de)(de)(de)(de)(de)(de)影響。
