電容(rong)觸(chu)摸屏(ping)的(de)漂移問題。在(zai)(zai)觸(chu)摸屏(ping)產品(pin)中，電容(rong)觸(chu)摸屏(ping)是(shi)我們(men)常用的(de)觸(chu)摸屏(ping)方式，那么(me)，對于電容(rong)觸(chu)摸屏(ping)來(lai)說，其產品(pin)本身應用比較廣泛，但是(shi)也存(cun)在(zai)(zai)著(zhu)不(bu)少(shao)問題。而且由(you)于現(xian)在(zai)(zai)科技的(de)發展(zhan)程度還(huan)無(wu)法完全解(jie)決觸(chu)摸屏(ping)產品(pin)在(zai)(zai)相關原(yuan)理上出(chu)現(xian)的(de)問題，所以對于這(zhe)些(xie)問題，目前還(huan)是(shi)普遍存(cun)在(zai)(zai)的(de)。
在這里武(wu)漢公司要(yao)跟大家(jia)討(tao)論(lun)的(de)(de)(de)是(shi)(shi)(shi)關(guan)于電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)"漂(piao)移"問(wen)題(ti)，這個問(wen)題(ti)比(bi)較常見，也是(shi)(shi)(shi)我(wo)們在解決產品(pin)問(wen)題(ti)時主要(yao)考慮的(de)(de)(de)方(fang)面。 電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)漂(piao)移問(wen)題(ti)介紹！ 武(wu)漢觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)公司提示，電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)本(ben)身實際(ji)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(bu)(bu)能觸(chu)(chu)摸(mo)(mo)(mo)(mo)，由于使用(yong)電(dian)(dian)容方(fang)式(shi)，導致有漂(piao)移現象。電(dian)(dian)容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)和電(dian)(dian)阻觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)都是(shi)(shi)(shi)電(dian)(dian)原(yuan)理工作方(fang)式(shi)，電(dian)(dian)工作方(fang)式(shi)對(dui)于多(duo)(duo)點(dian)觸(chu)(chu)摸(mo)(mo)(mo)(mo)，不(bu)(bu)管是(shi)(shi)(shi)多(duo)(duo)少點(dian)，也不(bu)(bu)管是(shi)(shi)(shi)連續的(de)(de)(de)還是(shi)(shi)(shi)不(bu)(bu)連續的(de)(de)(de)都是(shi)(shi)(shi)取多(duo)(duo)點(dian)觸(chu)(chu)摸(mo)(mo)(mo)(mo)的(de)(de)(de)中心(xin)點(dian)判斷，因為(wei)電(dian)(dian)流疊加是(shi)(shi)(shi)分不(bu)(bu)出來誰是(shi)(shi)(shi)誰的(de)(de)(de)，沒有辦法。
但是(shi)，目前來說，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)仍然有不(bu)少問(wen)題存在(zai)。武漢公司信為，觸(chu)(chu)摸(mo)屏(ping)(ping)目前的(de)(de)(de)(de)透明(ming)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料ITO--氧化金屬非(fei)(fei)常(chang)脆弱，觸(chu)(chu)摸(mo)幾下就會損壞，還(huan)不(bu)能(neng)直(zhi)接(jie)用(yong)(yong)來作(zuo)工作(zuo)層。材(cai)料的(de)(de)(de)(de)問(wen)題一時還(huan)難以解決，只好委曲求全：在(zai)外部增(zeng)加一層非(fei)(fei)常(chang)薄的(de)(de)(de)(de)堅(jian)硬玻(bo)(bo)璃(li)，它顯(xian)然是(shi)不(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)，直(zhi)流是(shi)不(bu)行了(le)，改用(yong)(yong)高(gao)頻交(jiao)流信號(hao)，靠(kao)人(ren)的(de)(de)(de)(de)手指頭（隔著薄玻(bo)(bo)璃(li)）與工作(zuo)面形成的(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)來吸走一個交(jiao)流電(dian)(dian)(dian)(dian)(dian)(dian)流，這就是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)"名(ming)字的(de)(de)(de)(de)由來。 電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)之所(suo)以出現"漂移"的(de)(de)(de)(de)問(wen)題，是(shi)因為耦合電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)方(fang)(fang)式是(shi)不(bu)穩定(ding)的(de)(de)(de)(de)，它直(zhi)接(jie)受溫度(du)(du)、濕(shi)(shi)度(du)(du)、手指濕(shi)(shi)潤程(cheng)度(du)(du)、人(ren)體(ti)(ti)體(ti)(ti)重、地(di)面干燥(zao)程(cheng)度(du)(du)影(ying)響，受外界大面積物體(ti)(ti)的(de)(de)(de)(de)干擾也(ye)(ye)非(fei)(fei)常(chang)大，帶(dai)來了(le)不(bu)穩定(ding)的(de)(de)(de)(de)結(jie)果，這些(xie)都直(zhi)接(jie)違背了(le)作(zuo)為觸(chu)(chu)摸(mo)屏(ping)(ping)這種坐標(biao)系統的(de)(de)(de)(de)基本要(yao)求，不(bu)可避免的(de)(de)(de)(de)要(yao)產生漂移，有的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)欲求通(tong)過25點校準法甚(shen)至96點校準法來解決漂移問(wen)題，其實(shi)是(shi)不(bu)可能(neng)的(de)(de)(de)(de)，漂移是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)工作(zuo)的(de)(de)(de)(de)這種方(fang)(fang)式決定(ding)的(de)(de)(de)(de)，即使是(shi)在(zai)控制器的(de)(de)(de)(de)單片程(cheng)序上(shang)(shang)利(li)用(yong)(yong)動態計算和(he)經驗值查表，也(ye)(ye)只能(neng)是(shi)治標(biao)不(bu)治本。 其實(shi)，多點校準法最早是(shi)大屏(ping)(ping)幕投影(ying)觸(chu)(chu)摸(mo)板使用(yong)(yong)的(de)(de)(de)(de)方(fang)(fang)法，目的(de)(de)(de)(de)是(shi)消除(chu)坐標(biao)對應的(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)觸(chu)(chu)摸(mo)屏(ping)(ping)的(de)(de)(de)(de)線xing失真也(ye)(ye)非(fei)(fei)常(chang)厲害，主要(yao)是(shi)因為電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)屏(ping)(ping)的(de)(de)(de)(de)計算建立在(zai)四(si)個電(dian)(dian)(dian)(dian)(dian)(dian)流量與觸(chu)(chu)摸(mo)點到四(si)個電(dian)(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)距離成比(bi)例的(de)(de)(de)(de)理想(xiang)狀態上(shang)(shang)，實(shi)際(ji)由于受環境(jing)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、線路寄(ji)生電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)和(he)不(bu)同(tong)人(ren)使用(yong)(yong)的(de)(de)(de)(de)影(ying)響。
