電容(rong)觸(chu)摸屏的(de)漂移問題(ti)。在(zai)(zai)觸(chu)摸屏產品(pin)中(zhong)，電容(rong)觸(chu)摸屏是(shi)我們常用的(de)觸(chu)摸屏方式，那么(me)，對于(yu)電容(rong)觸(chu)摸屏來說，其(qi)產品(pin)本(ben)身應用比較廣泛，但是(shi)也存(cun)(cun)在(zai)(zai)著不少問題(ti)。而且由(you)于(yu)現在(zai)(zai)科技的(de)發展程度還(huan)無法完(wan)全解決(jue)觸(chu)摸屏產品(pin)在(zai)(zai)相(xiang)關原理上出現的(de)問題(ti)，所以對于(yu)這些問題(ti)，目前(qian)還(huan)是(shi)普遍存(cun)(cun)在(zai)(zai)的(de)。
在這里武漢(han)公司要跟(gen)大家討論的(de)(de)(de)(de)是關于電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)的(de)(de)(de)(de)"漂(piao)移"問題，這個(ge)問題比較常見，也是我們在解決產品問題時(shi)主要考慮的(de)(de)(de)(de)方(fang)面。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)的(de)(de)(de)(de)漂(piao)移問題介紹(shao)！ 武漢(han)觸摸(mo)(mo)屏(ping)公司提示，電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)本(ben)身實際是一(yi)套(tao)精密的(de)(de)(de)(de)漏(lou)電(dian)(dian)(dian)(dian)傳感器，帶手套(tao)的(de)(de)(de)(de)手不(bu)(bu)(bu)能(neng)觸摸(mo)(mo)，由于使用電(dian)(dian)(dian)(dian)容(rong)(rong)方(fang)式，導致有(you)漂(piao)移現象。電(dian)(dian)(dian)(dian)容(rong)(rong)觸摸(mo)(mo)屏(ping)和電(dian)(dian)(dian)(dian)阻觸摸(mo)(mo)屏(ping)都(dou)是電(dian)(dian)(dian)(dian)原(yuan)理工作(zuo)方(fang)式，電(dian)(dian)(dian)(dian)工作(zuo)方(fang)式對于多(duo)點(dian)觸摸(mo)(mo)，不(bu)(bu)(bu)管是多(duo)少點(dian)，也不(bu)(bu)(bu)管是連(lian)(lian)續的(de)(de)(de)(de)還是不(bu)(bu)(bu)連(lian)(lian)續的(de)(de)(de)(de)都(dou)是取(qu)多(duo)點(dian)觸摸(mo)(mo)的(de)(de)(de)(de)中心(xin)點(dian)判斷，因為電(dian)(dian)(dian)(dian)流疊加是分不(bu)(bu)(bu)出來誰是誰的(de)(de)(de)(de)，沒有(you)辦法。
但(dan)是(shi)(shi)(shi)(shi)，目(mu)前來(lai)說，電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)仍然有不(bu)少(shao)問(wen)題(ti)存在(zai)(zai)。武(wu)漢(han)公司信為，觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)目(mu)前的(de)(de)(de)(de)(de)透明導電(dian)(dian)(dian)(dian)材料(liao)ITO--氧(yang)化(hua)金屬(shu)非(fei)常(chang)脆弱，觸(chu)(chu)(chu)(chu)摸幾下就會損壞，還(huan)不(bu)能直(zhi)接(jie)用(yong)(yong)來(lai)作工作層(ceng)。材料(liao)的(de)(de)(de)(de)(de)問(wen)題(ti)一(yi)時還(huan)難以解(jie)決(jue)，只(zhi)好委(wei)曲求(qiu)全：在(zai)(zai)外(wai)部增加一(yi)層(ceng)非(fei)常(chang)薄(bo)的(de)(de)(de)(de)(de)堅(jian)硬玻(bo)璃，它(ta)顯然是(shi)(shi)(shi)(shi)不(bu)能導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)，直(zhi)流(liu)是(shi)(shi)(shi)(shi)不(bu)行了(le)，改(gai)用(yong)(yong)高頻交流(liu)信號，靠人的(de)(de)(de)(de)(de)手(shou)指頭(tou)（隔著薄(bo)玻(bo)璃）與工作面形成(cheng)的(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)容(rong)來(lai)吸(xi)走一(yi)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)屏(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)"名字的(de)(de)(de)(de)(de)由(you)(you)來(lai)。 電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)之所以出現"漂移(yi)(yi)"的(de)(de)(de)(de)(de)問(wen)題(ti)，是(shi)(shi)(shi)(shi)因(yin)(yin)為耦合電(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)方式是(shi)(shi)(shi)(shi)不(bu)穩定的(de)(de)(de)(de)(de)，它(ta)直(zhi)接(jie)受(shou)溫(wen)度(du)、濕(shi)度(du)、手(shou)指濕(shi)潤程(cheng)度(du)、人體體重、地面干(gan)燥程(cheng)度(du)影(ying)響，受(shou)外(wai)界大(da)(da)面積(ji)物體的(de)(de)(de)(de)(de)干(gan)擾(rao)也非(fei)常(chang)大(da)(da)，帶(dai)來(lai)了(le)不(bu)穩定的(de)(de)(de)(de)(de)結果(guo)，這(zhe)些都(dou)直(zhi)接(jie)違背(bei)了(le)作為觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)這(zhe)種坐(zuo)標系統的(de)(de)(de)(de)(de)基本要(yao)求(qiu)，不(bu)可避免的(de)(de)(de)(de)(de)要(yao)產生漂移(yi)(yi)，有的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)欲求(qiu)通過(guo)25點(dian)校(xiao)(xiao)準法(fa)(fa)甚(shen)至96點(dian)校(xiao)(xiao)準法(fa)(fa)來(lai)解(jie)決(jue)漂移(yi)(yi)問(wen)題(ti)，其實是(shi)(shi)(shi)(shi)不(bu)可能的(de)(de)(de)(de)(de)，漂移(yi)(yi)是(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)工作的(de)(de)(de)(de)(de)這(zhe)種方式決(jue)定的(de)(de)(de)(de)(de)，即使(shi)是(shi)(shi)(shi)(shi)在(zai)(zai)控(kong)制器的(de)(de)(de)(de)(de)單片程(cheng)序上利用(yong)(yong)動態計(ji)算和(he)經驗值查表(biao)，也只(zhi)能是(shi)(shi)(shi)(shi)治(zhi)標不(bu)治(zhi)本。 其實，多點(dian)校(xiao)(xiao)準法(fa)(fa)最早是(shi)(shi)(shi)(shi)大(da)(da)屏(ping)(ping)幕投影(ying)觸(chu)(chu)(chu)(chu)摸板使(shi)用(yong)(yong)的(de)(de)(de)(de)(de)方法(fa)(fa)，目(mu)的(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)消除坐(zuo)標對應的(de)(de)(de)(de)(de)線(xian)xing失真，電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)(chu)摸屏(ping)(ping)的(de)(de)(de)(de)(de)線(xian)xing失真也非(fei)常(chang)厲(li)害(hai)，主要(yao)是(shi)(shi)(shi)(shi)因(yin)(yin)為電(dian)(dian)(dian)(dian)容(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)計(ji)算建立(li)在(zai)(zai)四個電(dian)(dian)(dian)(dian)流(liu)量與觸(chu)(chu)(chu)(chu)摸點(dian)到四個電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距(ju)離成(cheng)比例的(de)(de)(de)(de)(de)理想狀態上，實際(ji)由(you)(you)于受(shou)環境電(dian)(dian)(dian)(dian)容(rong)、線(xian)路寄生電(dian)(dian)(dian)(dian)容(rong)和(he)不(bu)同人使(shi)用(yong)(yong)的(de)(de)(de)(de)(de)影(ying)響。
