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大同電容觸摸屏的漂移問題

分類:公司新聞(wen) 發布時間:2022-10-25 37776次瀏覽

電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)的漂移問題。在觸(chu)(chu)摸(mo)(mo)屏(ping)產品中,電(dian)(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏(ping)是我(wo)們常用的觸(chu)(chu)摸(mo)(mo)屏(ping)方式,那么,對(dui)...

電(dian)容(rong)觸(chu)摸(mo)屏(ping)(ping)的(de)(de)漂移(yi)問(wen)題(ti)。在(zai)觸(chu)摸(mo)屏(ping)(ping)產品中,電(dian)容(rong)觸(chu)摸(mo)屏(ping)(ping)是(shi)我(wo)們常用的(de)(de)觸(chu)摸(mo)屏(ping)(ping)方(fang)式(shi),那么,對于(yu)電(dian)容(rong)觸(chu)摸(mo)屏(ping)(ping)來說,其產品本身(shen)應用比較廣泛,但是(shi)也存在(zai)著不少問(wen)題(ti)。而且由于(yu)現在(zai)科技的(de)(de)發展程(cheng)度還無(wu)法完全解決觸(chu)摸(mo)屏(ping)(ping)產品在(zai)相關原(yuan)理上出現的(de)(de)問(wen)題(ti),所(suo)以對于(yu)這些問(wen)題(ti),目前還是(shi)普(pu)遍(bian)存在(zai)的(de)(de)。

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在這(zhe)里武漢公司要(yao)跟大(da)家討論的(de)(de)是(shi)(shi)(shi)關(guan)于電(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)的(de)(de)"漂(piao)移"問(wen)題,這(zhe)個(ge)問(wen)題比(bi)較常見,也(ye)是(shi)(shi)(shi)我們在解(jie)決產品(pin)問(wen)題時主要(yao)考慮的(de)(de)方面。    電(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)的(de)(de)漂(piao)移問(wen)題介紹!    武漢觸(chu)(chu)(chu)摸(mo)屏(ping)公司提示,電(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)本身(shen)實際是(shi)(shi)(shi)一套精密的(de)(de)漏電(dian)傳感(gan)器,帶手套的(de)(de)手不能(neng)觸(chu)(chu)(chu)摸(mo),由于使用電(dian)容(rong)(rong)方式(shi),導致有漂(piao)移現象(xiang)。電(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)屏(ping)和電(dian)阻觸(chu)(chu)(chu)摸(mo)屏(ping)都是(shi)(shi)(shi)電(dian)原理工(gong)作(zuo)方式(shi),電(dian)工(gong)作(zuo)方式(shi)對于多(duo)(duo)點觸(chu)(chu)(chu)摸(mo),不管是(shi)(shi)(shi)多(duo)(duo)少點,也(ye)不管是(shi)(shi)(shi)連續的(de)(de)還是(shi)(shi)(shi)不連續的(de)(de)都是(shi)(shi)(shi)取多(duo)(duo)點觸(chu)(chu)(chu)摸(mo)的(de)(de)中心點判斷,因為電(dian)流疊加(jia)是(shi)(shi)(shi)分不出來(lai)誰是(shi)(shi)(shi)誰的(de)(de),沒(mei)有辦法。

但是(shi),目(mu)前來說,電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)仍然(ran)有不(bu)(bu)少問題(ti)(ti)存在(zai)。武(wu)漢公(gong)司信(xin)為(wei),觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)目(mu)前的(de)(de)(de)透明導電(dian)(dian)(dian)(dian)材料ITO--氧化金屬(shu)非常(chang)脆弱,觸(chu)(chu)(chu)摸(mo)(mo)(mo)幾下就會損壞(huai),還不(bu)(bu)能直(zhi)接(jie)用(yong)(yong)(yong)來作(zuo)工(gong)作(zuo)層(ceng)。材料的(de)(de)(de)問題(ti)(ti)一(yi)時還難以(yi)(yi)解(jie)決,只好委曲求全:在(zai)外(wai)部增(zeng)加(jia)一(yi)層(ceng)非常(chang)薄的(de)(de)(de)堅硬玻(bo)璃,它顯然(ran)是(shi)不(bu)(bu)能導電(dian)(dian)(dian)(dian)的(de)(de)(de),直(zhi)流(liu)(liu)是(shi)不(bu)(bu)行了(le),改用(yong)(yong)(yong)高頻(pin)交流(liu)(liu)信(xin)號,靠人的(de)(de)(de)手指頭(隔著薄玻(bo)璃)與(yu)工(gong)作(zuo)面(mian)形成(cheng)(cheng)的(de)(de)(de)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)來吸(xi)走(zou)一(yi)個交流(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu),這就是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)(rong)"名字的(de)(de)(de)由來。    電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)之(zhi)所以(yi)(yi)出現"漂移(yi)"的(de)(de)(de)問題(ti)(ti),是(shi)因為(wei)耦合電(dian)(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)方式(shi)是(shi)不(bu)(bu)穩(wen)定的(de)(de)(de),它直(zhi)接(jie)受(shou)溫度(du)、濕度(du)、手指濕潤(run)程度(du)、人體體重、地面(mian)干(gan)燥程度(du)影(ying)響(xiang),受(shou)外(wai)界大面(mian)積物體的(de)(de)(de)干(gan)擾也非常(chang)大,帶(dai)來了(le)不(bu)(bu)穩(wen)定的(de)(de)(de)結果,這些都(dou)直(zhi)接(jie)違(wei)背了(le)作(zuo)為(wei)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)這種坐標(biao)系統的(de)(de)(de)基本要(yao)求,不(bu)(bu)可避免的(de)(de)(de)要(yao)產生漂移(yi),有的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)欲(yu)求通(tong)過25點(dian)(dian)校準法(fa)甚至96點(dian)(dian)校準法(fa)來解(jie)決漂移(yi)問題(ti)(ti),其實是(shi)不(bu)(bu)可能的(de)(de)(de),漂移(yi)是(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)工(gong)作(zuo)的(de)(de)(de)這種方式(shi)決定的(de)(de)(de),即(ji)使(shi)(shi)是(shi)在(zai)控(kong)制器的(de)(de)(de)單片程序上利用(yong)(yong)(yong)動態計算和經驗值查表,也只能是(shi)治(zhi)標(biao)不(bu)(bu)治(zhi)本。    其實,多(duo)點(dian)(dian)校準法(fa)最早是(shi)大屏(ping)(ping)(ping)幕投(tou)影(ying)觸(chu)(chu)(chu)摸(mo)(mo)(mo)板(ban)使(shi)(shi)用(yong)(yong)(yong)的(de)(de)(de)方法(fa),目(mu)的(de)(de)(de)是(shi)消除坐標(biao)對應的(de)(de)(de)線xing失真(zhen),電(dian)(dian)(dian)(dian)容(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)線xing失真(zhen)也非常(chang)厲害,主要(yao)是(shi)因為(wei)電(dian)(dian)(dian)(dian)容(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)計算建立在(zai)四(si)個電(dian)(dian)(dian)(dian)流(liu)(liu)量與(yu)觸(chu)(chu)(chu)摸(mo)(mo)(mo)點(dian)(dian)到四(si)個電(dian)(dian)(dian)(dian)極的(de)(de)(de)距離成(cheng)(cheng)比例的(de)(de)(de)理想狀態上,實際由于受(shou)環(huan)境(jing)電(dian)(dian)(dian)(dian)容(rong)(rong)、線路寄生電(dian)(dian)(dian)(dian)容(rong)(rong)和不(bu)(bu)同人使(shi)(shi)用(yong)(yong)(yong)的(de)(de)(de)影(ying)響(xiang)。

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