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大慶電容觸摸屏的漂移問題

分類(lei):公(gong)司新聞 發布時間(jian):2022-10-25 37170次(ci)瀏覽(lan)

電容(rong)觸摸(mo)屏的(de)漂移(yi)問題。在觸摸(mo)屏產品中,電容(rong)觸摸(mo)屏是我(wo)們常(chang)用的(de)觸摸(mo)屏方(fang)式,那么,對...

電容觸(chu)摸(mo)屏(ping)的漂移問題。在(zai)觸(chu)摸(mo)屏(ping)產(chan)品中,電容觸(chu)摸(mo)屏(ping)是我們常(chang)用的觸(chu)摸(mo)屏(ping)方式,那么(me),對于(yu)電容觸(chu)摸(mo)屏(ping)來說,其產(chan)品本身應用比較廣泛(fan),但是也存在(zai)著不少問題。而且(qie)由于(yu)現在(zai)科技的發展程度還無法完全解決觸(chu)摸(mo)屏(ping)產(chan)品在(zai)相(xiang)關原(yuan)理(li)上出現的問題,所以對于(yu)這些問題,目前還是普遍存在(zai)的。

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在這里武漢公(gong)司(si)要跟大(da)家(jia)討論的(de)(de)是(shi)(shi)關(guan)于電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)"漂移(yi)"問(wen)題(ti),這個問(wen)題(ti)比(bi)較常見(jian),也是(shi)(shi)我們在解決(jue)產品問(wen)題(ti)時主要考(kao)慮的(de)(de)方面。    電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)的(de)(de)漂移(yi)問(wen)題(ti)介紹!    武漢觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)公(gong)司(si)提示,電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)本身(shen)實際是(shi)(shi)一(yi)套精(jing)密的(de)(de)漏電(dian)(dian)傳感器,帶手套的(de)(de)手不(bu)(bu)能觸(chu)摸(mo)(mo)(mo),由于使用電(dian)(dian)容(rong)(rong)方式,導致有漂移(yi)現(xian)象。電(dian)(dian)容(rong)(rong)觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)和電(dian)(dian)阻觸(chu)摸(mo)(mo)(mo)屏(ping)(ping)都是(shi)(shi)電(dian)(dian)原理工(gong)作方式,電(dian)(dian)工(gong)作方式對于多點觸(chu)摸(mo)(mo)(mo),不(bu)(bu)管是(shi)(shi)多少點,也不(bu)(bu)管是(shi)(shi)連續的(de)(de)還是(shi)(shi)不(bu)(bu)連續的(de)(de)都是(shi)(shi)取多點觸(chu)摸(mo)(mo)(mo)的(de)(de)中心點判斷,因(yin)為(wei)電(dian)(dian)流疊加是(shi)(shi)分不(bu)(bu)出來(lai)誰是(shi)(shi)誰的(de)(de),沒有辦法。

但是(shi)(shi),目(mu)前來(lai)說,電(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)仍然(ran)有不(bu)(bu)少(shao)問(wen)題存在(zai)。武漢公司信(xin)為,觸摸(mo)(mo)(mo)屏(ping)目(mu)前的(de)(de)(de)(de)透(tou)明(ming)導電(dian)(dian)(dian)材料ITO--氧(yang)化金屬非(fei)常(chang)脆弱,觸摸(mo)(mo)(mo)幾下就會損(sun)壞,還不(bu)(bu)能(neng)直(zhi)接(jie)用(yong)來(lai)作(zuo)工(gong)(gong)(gong)作(zuo)層。材料的(de)(de)(de)(de)問(wen)題一(yi)時還難以解(jie)決(jue),只好委曲求全:在(zai)外(wai)部(bu)增加一(yi)層非(fei)常(chang)薄(bo)的(de)(de)(de)(de)堅(jian)硬玻璃,它顯然(ran)是(shi)(shi)不(bu)(bu)能(neng)導電(dian)(dian)(dian)的(de)(de)(de)(de),直(zhi)流(liu)(liu)是(shi)(shi)不(bu)(bu)行(xing)了(le),改用(yong)高(gao)頻交流(liu)(liu)信(xin)號,靠人(ren)(ren)的(de)(de)(de)(de)手(shou)指(zhi)(zhi)頭(隔著薄(bo)玻璃)與工(gong)(gong)(gong)作(zuo)面(mian)(mian)形(xing)成的(de)(de)(de)(de)耦合電(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)吸走一(yi)個(ge)(ge)交流(liu)(liu)電(dian)(dian)(dian)流(liu)(liu),這(zhe)就是(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)"電(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)由來(lai)。    電(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)之所以出現"漂(piao)移(yi)"的(de)(de)(de)(de)問(wen)題,是(shi)(shi)因為耦合電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)方式是(shi)(shi)不(bu)(bu)穩定(ding)的(de)(de)(de)(de),它直(zhi)接(jie)受溫度(du)(du)、濕度(du)(du)、手(shou)指(zhi)(zhi)濕潤(run)程(cheng)(cheng)度(du)(du)、人(ren)(ren)體體重、地面(mian)(mian)干(gan)燥程(cheng)(cheng)度(du)(du)影(ying)響,受外(wai)界(jie)大(da)(da)面(mian)(mian)積物體的(de)(de)(de)(de)干(gan)擾也非(fei)常(chang)大(da)(da),帶來(lai)了(le)不(bu)(bu)穩定(ding)的(de)(de)(de)(de)結果,這(zhe)些都(dou)直(zhi)接(jie)違背(bei)了(le)作(zuo)為觸摸(mo)(mo)(mo)屏(ping)這(zhe)種坐標(biao)(biao)系統的(de)(de)(de)(de)基本(ben)要(yao)求,不(bu)(bu)可避(bi)免的(de)(de)(de)(de)要(yao)產生漂(piao)移(yi),有的(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)欲求通過(guo)25點(dian)校準(zhun)(zhun)法(fa)甚至96點(dian)校準(zhun)(zhun)法(fa)來(lai)解(jie)決(jue)漂(piao)移(yi)問(wen)題,其實是(shi)(shi)不(bu)(bu)可能(neng)的(de)(de)(de)(de),漂(piao)移(yi)是(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)工(gong)(gong)(gong)作(zuo)的(de)(de)(de)(de)這(zhe)種方式決(jue)定(ding)的(de)(de)(de)(de),即使(shi)是(shi)(shi)在(zai)控制器的(de)(de)(de)(de)單(dan)片程(cheng)(cheng)序上利用(yong)動態(tai)(tai)計算和(he)經(jing)驗值查(cha)表,也只能(neng)是(shi)(shi)治標(biao)(biao)不(bu)(bu)治本(ben)。    其實,多點(dian)校準(zhun)(zhun)法(fa)最早是(shi)(shi)大(da)(da)屏(ping)幕(mu)投影(ying)觸摸(mo)(mo)(mo)板(ban)使(shi)用(yong)的(de)(de)(de)(de)方法(fa),目(mu)的(de)(de)(de)(de)是(shi)(shi)消除坐標(biao)(biao)對應的(de)(de)(de)(de)線(xian)xing失真,電(dian)(dian)(dian)容(rong)(rong)(rong)觸摸(mo)(mo)(mo)屏(ping)的(de)(de)(de)(de)線(xian)xing失真也非(fei)常(chang)厲害,主要(yao)是(shi)(shi)因為電(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)的(de)(de)(de)(de)計算建(jian)立在(zai)四個(ge)(ge)電(dian)(dian)(dian)流(liu)(liu)量與觸摸(mo)(mo)(mo)點(dian)到四個(ge)(ge)電(dian)(dian)(dian)極的(de)(de)(de)(de)距離(li)成比(bi)例的(de)(de)(de)(de)理想(xiang)狀態(tai)(tai)上,實際由于受環境電(dian)(dian)(dian)容(rong)(rong)(rong)、線(xian)路(lu)寄生電(dian)(dian)(dian)容(rong)(rong)(rong)和(he)不(bu)(bu)同人(ren)(ren)使(shi)用(yong)的(de)(de)(de)(de)影(ying)響。

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