薄(bo)膜開(kai)關是集按鍵功能(neng)、指示元件、儀器(qi)(qi)面板為一(yi)體(ti)的(de)(de)一(yi)個操作系統。由面板、上電(dian)(dian)(dian)路(lu)、隔(ge)離層、下電(dian)(dian)(dian)路(lu)四(si)部(bu)分組(zu)成。為輕觸(chu)接通式常開(kai)開(kai)關，正常情況下薄(bo)膜開(kai)關的(de)(de)上、下觸(chu)點呈斷開(kai)狀態(tai)。按下薄(bo)膜開(kai)關，上電(dian)(dian)(dian)路(lu)的(de)(de)觸(chu)點向下變形(xing)，與(yu)下電(dian)(dian)(dian)路(lu)的(de)(de)極板接觸(chu)導通，手(shou)指松開(kai)后，上電(dian)(dian)(dian)路(lu)觸(chu)點反彈回來，電(dian)(dian)(dian)路(lu)斷開(kai)，回路(lu)觸(chu)發一(yi)個信號。薄(bo)膜開(kai)關結構嚴謹，外形(xing)美(mei)觀，密封性好。具有防潮濕，使用(yong)(yong)壽(shou)命長(chang)等(deng)特點。廣泛應(ying)用(yong)(yong)于(yu)電(dian)(dian)(dian)子(zi)通訊、電(dian)(dian)(dian)子(zi)測量的(de)(de)儀器(qi)(qi)，工業控(kong)制，醫療(liao)設備，汽車工業，智(zhi)能(neng)玩具，家用(yong)(yong)電(dian)(dian)(dian)器(qi)(qi)等(deng)領域。