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廣州電容觸摸屏的漂移問題

分類:公司(si)新(xin)聞 發布時(shi)間:2022-10-25 37486次瀏覽

電容觸摸(mo)屏的漂移(yi)問題。在觸摸(mo)屏產品中(zhong),電容觸摸(mo)屏是(shi)我們常用的觸摸(mo)屏方式,那么,對(dui)...

電容觸摸屏(ping)的(de)(de)漂(piao)移問(wen)題(ti)。在(zai)(zai)觸摸屏(ping)產(chan)品(pin)中,電容觸摸屏(ping)是(shi)(shi)我(wo)們常用的(de)(de)觸摸屏(ping)方式(shi),那么(me),對于(yu)電容觸摸屏(ping)來說(shuo),其(qi)產(chan)品(pin)本身應(ying)用比較廣泛(fan),但(dan)是(shi)(shi)也存在(zai)(zai)著不少(shao)問(wen)題(ti)。而且由于(yu)現(xian)在(zai)(zai)科技(ji)的(de)(de)發展程度還(huan)(huan)無法完全(quan)解決觸摸屏(ping)產(chan)品(pin)在(zai)(zai)相關(guan)原(yuan)理上出現(xian)的(de)(de)問(wen)題(ti),所(suo)以對于(yu)這些問(wen)題(ti),目前(qian)還(huan)(huan)是(shi)(shi)普遍(bian)存在(zai)(zai)的(de)(de)。

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在這(zhe)里武漢公(gong)司要跟(gen)大家(jia)討論(lun)的(de)(de)是(shi)(shi)(shi)關于(yu)電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)屏的(de)(de)"漂移"問題(ti),這(zhe)個問題(ti)比較常見,也是(shi)(shi)(shi)我們在解決產品問題(ti)時主(zhu)要考(kao)慮的(de)(de)方(fang)面。    電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)屏的(de)(de)漂移問題(ti)介紹!    武漢觸(chu)(chu)(chu)摸(mo)屏公(gong)司提示,電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)屏本身實際是(shi)(shi)(shi)一套(tao)精密的(de)(de)漏電(dian)(dian)(dian)(dian)傳感(gan)器,帶(dai)手(shou)套(tao)的(de)(de)手(shou)不(bu)能(neng)觸(chu)(chu)(chu)摸(mo),由于(yu)使用電(dian)(dian)(dian)(dian)容(rong)方(fang)式,導致(zhi)有漂移現(xian)象。電(dian)(dian)(dian)(dian)容(rong)觸(chu)(chu)(chu)摸(mo)屏和電(dian)(dian)(dian)(dian)阻觸(chu)(chu)(chu)摸(mo)屏都(dou)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)原理工作(zuo)方(fang)式,電(dian)(dian)(dian)(dian)工作(zuo)方(fang)式對(dui)于(yu)多(duo)點(dian)觸(chu)(chu)(chu)摸(mo),不(bu)管是(shi)(shi)(shi)多(duo)少(shao)點(dian),也不(bu)管是(shi)(shi)(shi)連(lian)(lian)續的(de)(de)還(huan)是(shi)(shi)(shi)不(bu)連(lian)(lian)續的(de)(de)都(dou)是(shi)(shi)(shi)取多(duo)點(dian)觸(chu)(chu)(chu)摸(mo)的(de)(de)中心點(dian)判(pan)斷(duan),因為電(dian)(dian)(dian)(dian)流疊加是(shi)(shi)(shi)分不(bu)出(chu)來(lai)誰是(shi)(shi)(shi)誰的(de)(de),沒有辦法。

但是(shi)(shi)(shi),目前來說,電(dian)(dian)(dian)(dian)容(rong)觸摸(mo)屏(ping)(ping)仍然有(you)(you)不(bu)(bu)少問題存在。武漢公司信為(wei),觸摸(mo)屏(ping)(ping)目前的(de)(de)(de)(de)(de)透(tou)明導電(dian)(dian)(dian)(dian)材料(liao)ITO--氧化金屬非(fei)常(chang)脆弱(ruo),觸摸(mo)幾下(xia)就會(hui)損壞,還不(bu)(bu)能(neng)直(zhi)接(jie)用(yong)來作工(gong)作層。材料(liao)的(de)(de)(de)(de)(de)問題一(yi)(yi)時還難以解決(jue),只好委曲求全:在外部增加一(yi)(yi)層非(fei)常(chang)薄(bo)的(de)(de)(de)(de)(de)堅硬玻璃,它顯然是(shi)(shi)(shi)不(bu)(bu)能(neng)導電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de),直(zhi)流(liu)(liu)是(shi)(shi)(shi)不(bu)(bu)行了(le)(le),改(gai)用(yong)高頻交流(liu)(liu)信號(hao),靠人的(de)(de)(de)(de)(de)手指(zhi)(zhi)頭(隔(ge)著(zhu)薄(bo)玻璃)與工(gong)作面形成的(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)(dian)容(rong)來吸走(zou)一(yi)(yi)個(ge)交流(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu),這就是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)屏(ping)(ping)"電(dian)(dian)(dian)(dian)容(rong)"名字(zi)的(de)(de)(de)(de)(de)由來。    電(dian)(dian)(dian)(dian)容(rong)觸摸(mo)屏(ping)(ping)之(zhi)所以出現"漂(piao)移(yi)"的(de)(de)(de)(de)(de)問題,是(shi)(shi)(shi)因為(wei)耦合電(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)(shi)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de),它直(zhi)接(jie)受(shou)(shou)溫度(du)、濕度(du)、手指(zhi)(zhi)濕潤程度(du)、人體體重(zhong)、地面干(gan)燥程度(du)影(ying)響(xiang),受(shou)(shou)外界大面積物體的(de)(de)(de)(de)(de)干(gan)擾(rao)也非(fei)常(chang)大,帶來了(le)(le)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)(de)結果,這些(xie)都直(zhi)接(jie)違背(bei)了(le)(le)作為(wei)觸摸(mo)屏(ping)(ping)這種(zhong)坐標(biao)系統的(de)(de)(de)(de)(de)基本(ben)要求,不(bu)(bu)可避免的(de)(de)(de)(de)(de)要產(chan)生漂(piao)移(yi),有(you)(you)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)觸摸(mo)屏(ping)(ping)欲(yu)求通過25點校準法(fa)甚至96點校準法(fa)來解決(jue)漂(piao)移(yi)問題,其實是(shi)(shi)(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de)(de),漂(piao)移(yi)是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)容(rong)工(gong)作的(de)(de)(de)(de)(de)這種(zhong)方式(shi)決(jue)定(ding)的(de)(de)(de)(de)(de),即(ji)使是(shi)(shi)(shi)在控制器的(de)(de)(de)(de)(de)單片(pian)程序上利(li)用(yong)動態計算(suan)和經驗值查(cha)表,也只能(neng)是(shi)(shi)(shi)治(zhi)標(biao)不(bu)(bu)治(zhi)本(ben)。    其實,多點校準法(fa)最早是(shi)(shi)(shi)大屏(ping)(ping)幕投影(ying)觸摸(mo)板使用(yong)的(de)(de)(de)(de)(de)方法(fa),目的(de)(de)(de)(de)(de)是(shi)(shi)(shi)消除坐標(biao)對應的(de)(de)(de)(de)(de)線xing失(shi)真,電(dian)(dian)(dian)(dian)容(rong)觸摸(mo)屏(ping)(ping)的(de)(de)(de)(de)(de)線xing失(shi)真也非(fei)常(chang)厲(li)害,主要是(shi)(shi)(shi)因為(wei)電(dian)(dian)(dian)(dian)容(rong)屏(ping)(ping)的(de)(de)(de)(de)(de)計算(suan)建立在四個(ge)電(dian)(dian)(dian)(dian)流(liu)(liu)量與觸摸(mo)點到四個(ge)電(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)(de)距(ju)離成比例的(de)(de)(de)(de)(de)理想狀態上,實際由于(yu)受(shou)(shou)環境電(dian)(dian)(dian)(dian)容(rong)、線路寄生電(dian)(dian)(dian)(dian)容(rong)和不(bu)(bu)同(tong)人使用(yong)的(de)(de)(de)(de)(de)影(ying)響(xiang)。

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