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固原電容觸摸屏的漂移問題

分類:公司新聞 發布(bu)時間:2022-10-25 37162次瀏(liu)覽

電(dian)容觸(chu)(chu)摸(mo)(mo)屏(ping)的漂移問題。在(zai)觸(chu)(chu)摸(mo)(mo)屏(ping)產品中(zhong),電(dian)容觸(chu)(chu)摸(mo)(mo)屏(ping)是我(wo)們常用的觸(chu)(chu)摸(mo)(mo)屏(ping)方式(shi),那么,對(dui)...

電容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)的(de)漂移(yi)問題(ti)。在(zai)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)產(chan)品(pin)(pin)中,電容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)是(shi)我們常用的(de)觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)方式,那(nei)么,對(dui)于(yu)電容觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)來說,其產(chan)品(pin)(pin)本身應用比較廣泛(fan),但是(shi)也存在(zai)著不少問題(ti)。而且由于(yu)現(xian)在(zai)科技(ji)的(de)發展程度還無法(fa)完全(quan)解(jie)決觸(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)產(chan)品(pin)(pin)在(zai)相關(guan)原理上出現(xian)的(de)問題(ti),所以(yi)對(dui)于(yu)這些問題(ti),目前還是(shi)普遍存在(zai)的(de)。

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在這(zhe)(zhe)里武(wu)漢(han)公司要跟大家討(tao)論的(de)(de)(de)(de)是(shi)(shi)(shi)(shi)關于電(dian)容(rong)觸摸(mo)(mo)屏(ping)的(de)(de)(de)(de)"漂移"問(wen)題(ti)(ti),這(zhe)(zhe)個問(wen)題(ti)(ti)比較常見,也是(shi)(shi)(shi)(shi)我們在解決產品問(wen)題(ti)(ti)時主要考慮(lv)的(de)(de)(de)(de)方面。    電(dian)容(rong)觸摸(mo)(mo)屏(ping)的(de)(de)(de)(de)漂移問(wen)題(ti)(ti)介紹(shao)!    武(wu)漢(han)觸摸(mo)(mo)屏(ping)公司提示,電(dian)容(rong)觸摸(mo)(mo)屏(ping)本(ben)身實際是(shi)(shi)(shi)(shi)一(yi)套精密的(de)(de)(de)(de)漏電(dian)傳感器,帶手(shou)套的(de)(de)(de)(de)手(shou)不(bu)能觸摸(mo)(mo),由于使(shi)用電(dian)容(rong)方式(shi),導致有漂移現(xian)象。電(dian)容(rong)觸摸(mo)(mo)屏(ping)和(he)電(dian)阻觸摸(mo)(mo)屏(ping)都(dou)是(shi)(shi)(shi)(shi)電(dian)原理工(gong)作方式(shi),電(dian)工(gong)作方式(shi)對(dui)于多點(dian)觸摸(mo)(mo),不(bu)管(guan)是(shi)(shi)(shi)(shi)多少點(dian),也不(bu)管(guan)是(shi)(shi)(shi)(shi)連續的(de)(de)(de)(de)還是(shi)(shi)(shi)(shi)不(bu)連續的(de)(de)(de)(de)都(dou)是(shi)(shi)(shi)(shi)取多點(dian)觸摸(mo)(mo)的(de)(de)(de)(de)中心(xin)點(dian)判(pan)斷(duan),因為電(dian)流(liu)疊加是(shi)(shi)(shi)(shi)分不(bu)出來誰是(shi)(shi)(shi)(shi)誰的(de)(de)(de)(de),沒有辦法。

但是(shi)(shi),目(mu)(mu)前來(lai)說,電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)屏(ping)(ping)仍然有不(bu)(bu)少問題存在(zai)。武漢公司信為(wei),觸摸(mo)屏(ping)(ping)目(mu)(mu)前的(de)(de)透明導電(dian)(dian)(dian)(dian)(dian)材料ITO--氧化金屬(shu)非常脆(cui)弱,觸摸(mo)幾(ji)下(xia)就會(hui)損壞,還不(bu)(bu)能直接(jie)用(yong)(yong)來(lai)作(zuo)(zuo)工(gong)作(zuo)(zuo)層。材料的(de)(de)問題一(yi)時還難(nan)以解決,只好委曲求全:在(zai)外部增(zeng)加(jia)一(yi)層非常薄的(de)(de)堅硬玻璃,它顯(xian)然是(shi)(shi)不(bu)(bu)能導電(dian)(dian)(dian)(dian)(dian)的(de)(de),直流(liu)是(shi)(shi)不(bu)(bu)行了(le),改用(yong)(yong)高頻交(jiao)流(liu)信號,靠人的(de)(de)手指頭(隔著(zhu)薄玻璃)與工(gong)作(zuo)(zuo)面(mian)形(xing)成(cheng)的(de)(de)耦(ou)合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)吸走一(yi)個(ge)(ge)交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)流(liu),這(zhe)就是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)由來(lai)。    電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)屏(ping)(ping)之所以出現"漂移"的(de)(de)問題,是(shi)(shi)因(yin)為(wei)耦(ou)合電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)方式是(shi)(shi)不(bu)(bu)穩定的(de)(de),它直接(jie)受(shou)(shou)(shou)溫度、濕度、手指濕潤程度、人體(ti)(ti)體(ti)(ti)重(zhong)、地面(mian)干燥程度影響(xiang),受(shou)(shou)(shou)外界(jie)大(da)面(mian)積物(wu)體(ti)(ti)的(de)(de)干擾也(ye)非常大(da),帶(dai)來(lai)了(le)不(bu)(bu)穩定的(de)(de)結(jie)果,這(zhe)些都直接(jie)違背了(le)作(zuo)(zuo)為(wei)觸摸(mo)屏(ping)(ping)這(zhe)種坐標(biao)系統的(de)(de)基本(ben)要求,不(bu)(bu)可避免的(de)(de)要產生漂移,有的(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)屏(ping)(ping)欲求通過25點校準法(fa)(fa)甚(shen)至96點校準法(fa)(fa)來(lai)解決漂移問題,其實(shi)是(shi)(shi)不(bu)(bu)可能的(de)(de),漂移是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)工(gong)作(zuo)(zuo)的(de)(de)這(zhe)種方式決定的(de)(de),即使是(shi)(shi)在(zai)控制器的(de)(de)單片(pian)程序上利用(yong)(yong)動態(tai)計(ji)算和經驗值查(cha)表,也(ye)只能是(shi)(shi)治標(biao)不(bu)(bu)治本(ben)。    其實(shi),多點校準法(fa)(fa)最早(zao)是(shi)(shi)大(da)屏(ping)(ping)幕投影觸摸(mo)板使用(yong)(yong)的(de)(de)方法(fa)(fa),目(mu)(mu)的(de)(de)是(shi)(shi)消除坐標(biao)對應的(de)(de)線xing失真(zhen),電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)屏(ping)(ping)的(de)(de)線xing失真(zhen)也(ye)非常厲害,主要是(shi)(shi)因(yin)為(wei)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)的(de)(de)計(ji)算建立在(zai)四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)流(liu)量與觸摸(mo)點到四個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)距離成(cheng)比例的(de)(de)理想(xiang)狀(zhuang)態(tai)上,實(shi)際由于受(shou)(shou)(shou)環境電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、線路(lu)寄生電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)和不(bu)(bu)同人使用(yong)(yong)的(de)(de)影響(xiang)。

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