電容觸(chu)(chu)摸屏(ping)的漂移問(wen)題。在(zai)(zai)觸(chu)(chu)摸屏(ping)產(chan)品中，電容觸(chu)(chu)摸屏(ping)是我們常用(yong)的觸(chu)(chu)摸屏(ping)方式，那么，對(dui)于電容觸(chu)(chu)摸屏(ping)來說，其產(chan)品本身(shen)應(ying)用(yong)比較廣泛，但(dan)是也存在(zai)(zai)著不(bu)少問(wen)題。而且由于現在(zai)(zai)科技的發展程度還無法完全解(jie)決觸(chu)(chu)摸屏(ping)產(chan)品在(zai)(zai)相(xiang)關原理上出(chu)現的問(wen)題，所以(yi)對(dui)于這些(xie)問(wen)題，目前還是普遍存在(zai)(zai)的。
在這里武漢公(gong)司(si)要跟大家討論的(de)(de)是(shi)(shi)(shi)(shi)(shi)關于(yu)電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏的(de)(de)"漂移"問(wen)題，這個問(wen)題比較常見，也(ye)是(shi)(shi)(shi)(shi)(shi)我(wo)們在解(jie)決產(chan)品問(wen)題時主要考慮的(de)(de)方(fang)(fang)面。 電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏的(de)(de)漂移問(wen)題介紹！ 武漢觸(chu)(chu)(chu)摸(mo)(mo)屏公(gong)司(si)提示，電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏本身實際是(shi)(shi)(shi)(shi)(shi)一套(tao)(tao)精密的(de)(de)漏(lou)電(dian)(dian)傳感(gan)器，帶(dai)手套(tao)(tao)的(de)(de)手不(bu)(bu)能觸(chu)(chu)(chu)摸(mo)(mo)，由于(yu)使用電(dian)(dian)容(rong)(rong)方(fang)(fang)式(shi)，導致(zhi)有(you)(you)漂移現象。電(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏和電(dian)(dian)阻觸(chu)(chu)(chu)摸(mo)(mo)屏都(dou)是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)原理工(gong)作(zuo)方(fang)(fang)式(shi)，電(dian)(dian)工(gong)作(zuo)方(fang)(fang)式(shi)對于(yu)多(duo)點觸(chu)(chu)(chu)摸(mo)(mo)，不(bu)(bu)管是(shi)(shi)(shi)(shi)(shi)多(duo)少點，也(ye)不(bu)(bu)管是(shi)(shi)(shi)(shi)(shi)連續(xu)的(de)(de)還是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)連續(xu)的(de)(de)都(dou)是(shi)(shi)(shi)(shi)(shi)取(qu)多(duo)點觸(chu)(chu)(chu)摸(mo)(mo)的(de)(de)中心點判斷(duan)，因為電(dian)(dian)流疊加是(shi)(shi)(shi)(shi)(shi)分不(bu)(bu)出(chu)來誰是(shi)(shi)(shi)(shi)(shi)誰的(de)(de)，沒(mei)有(you)(you)辦法。
但(dan)是(shi)(shi)，目(mu)前來(lai)(lai)說，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸屏仍然有(you)不(bu)(bu)少問題(ti)(ti)(ti)存在(zai)。武(wu)漢公司信為(wei)(wei)，觸(chu)摸屏目(mu)前的(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)(dian)材(cai)料ITO--氧化金(jin)屬非(fei)常(chang)(chang)脆弱，觸(chu)摸幾下就會損(sun)壞，還不(bu)(bu)能(neng)直(zhi)(zhi)接用來(lai)(lai)作工(gong)作層。材(cai)料的(de)(de)(de)(de)(de)問題(ti)(ti)(ti)一(yi)時還難(nan)以(yi)(yi)解(jie)決(jue)，只(zhi)好(hao)委曲求(qiu)全：在(zai)外(wai)(wai)部(bu)增(zeng)加(jia)一(yi)層非(fei)常(chang)(chang)薄(bo)的(de)(de)(de)(de)(de)堅硬玻璃(li)，它(ta)顯然是(shi)(shi)不(bu)(bu)能(neng)導(dao)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)，直(zhi)(zhi)流(liu)是(shi)(shi)不(bu)(bu)行(xing)了(le)，改用高頻(pin)交流(liu)信號，靠人(ren)的(de)(de)(de)(de)(de)手指(zhi)頭（隔(ge)著薄(bo)玻璃(li)）與(yu)工(gong)作面(mian)形(xing)成(cheng)的(de)(de)(de)(de)(de)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)來(lai)(lai)吸走一(yi)個交流(liu)電(dian)(dian)(dian)(dian)流(liu)，這(zhe)(zhe)就是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏"電(dian)(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)(de)(de)由(you)來(lai)(lai)。 電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸屏之所以(yi)(yi)出現"漂(piao)移(yi)"的(de)(de)(de)(de)(de)問題(ti)(ti)(ti)，是(shi)(shi)因為(wei)(wei)耦合(he)電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)不(bu)(bu)穩(wen)定的(de)(de)(de)(de)(de)，它(ta)直(zhi)(zhi)接受溫度(du)(du)、濕度(du)(du)、手指(zhi)濕潤(run)程(cheng)度(du)(du)、人(ren)體體重(zhong)、地面(mian)干燥程(cheng)度(du)(du)影響(xiang)，受外(wai)(wai)界大面(mian)積物(wu)體的(de)(de)(de)(de)(de)干擾(rao)也非(fei)常(chang)(chang)大，帶來(lai)(lai)了(le)不(bu)(bu)穩(wen)定的(de)(de)(de)(de)(de)結果，這(zhe)(zhe)些都直(zhi)(zhi)接違背了(le)作為(wei)(wei)觸(chu)摸屏這(zhe)(zhe)種(zhong)坐標(biao)系統的(de)(de)(de)(de)(de)基本要(yao)求(qiu)，不(bu)(bu)可避免(mian)的(de)(de)(de)(de)(de)要(yao)產生漂(piao)移(yi)，有(you)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸屏欲(yu)求(qiu)通過25點(dian)校準(zhun)法甚至(zhi)96點(dian)校準(zhun)法來(lai)(lai)解(jie)決(jue)漂(piao)移(yi)問題(ti)(ti)(ti)，其實(shi)是(shi)(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de)(de)，漂(piao)移(yi)是(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作的(de)(de)(de)(de)(de)這(zhe)(zhe)種(zhong)方式(shi)決(jue)定的(de)(de)(de)(de)(de)，即使(shi)(shi)是(shi)(shi)在(zai)控制(zhi)器的(de)(de)(de)(de)(de)單(dan)片程(cheng)序(xu)上利用動(dong)態計算(suan)和經驗值查表，也只(zhi)能(neng)是(shi)(shi)治標(biao)不(bu)(bu)治本。 其實(shi)，多點(dian)校準(zhun)法最早是(shi)(shi)大屏幕投影觸(chu)摸板(ban)使(shi)(shi)用的(de)(de)(de)(de)(de)方法，目(mu)的(de)(de)(de)(de)(de)是(shi)(shi)消(xiao)除(chu)坐標(biao)對應(ying)的(de)(de)(de)(de)(de)線xing失真，電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)摸屏的(de)(de)(de)(de)(de)線xing失真也非(fei)常(chang)(chang)厲害(hai)，主要(yao)是(shi)(shi)因為(wei)(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)屏的(de)(de)(de)(de)(de)計算(suan)建立在(zai)四個電(dian)(dian)(dian)(dian)流(liu)量(liang)與(yu)觸(chu)摸點(dian)到四個電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距(ju)離(li)成(cheng)比例的(de)(de)(de)(de)(de)理想狀態上，實(shi)際由(you)于受環境電(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)同(tong)人(ren)使(shi)(shi)用的(de)(de)(de)(de)(de)影響(xiang)。
