薄(bo)膜開關是集按鍵功能(neng)(neng)、指示元件、儀器(qi)(qi)面板(ban)為一體的(de)一個操作(zuo)系統。由面板(ban)、上(shang)電(dian)(dian)(dian)路(lu)、隔(ge)離(li)層、下(xia)電(dian)(dian)(dian)路(lu)四部分組成。為輕觸(chu)接通式(shi)常開(kai)開(kai)關(guan)，正常情況(kuang)下(xia)薄膜(mo)開(kai)關(guan)的(de)上(shang)、下(xia)觸(chu)點呈斷開(kai)狀態。按下(xia)薄膜(mo)開(kai)關(guan)，上(shang)電(dian)(dian)(dian)路(lu)的(de)觸(chu)點向下(xia)變形(xing)，與下(xia)電(dian)(dian)(dian)路(lu)的(de)極板(ban)接觸(chu)導通，手指松開(kai)后，上(shang)電(dian)(dian)(dian)路(lu)觸(chu)點反彈回來(lai)，電(dian)(dian)(dian)路(lu)斷開(kai)，回路(lu)觸(chu)發一個信(xin)號(hao)。薄膜(mo)開(kai)關(guan)結構嚴謹，外(wai)形(xing)美觀，密封性好(hao)。具有防潮濕，使(shi)用壽命長等特點。廣泛應(ying)用于電(dian)(dian)(dian)子通訊、電(dian)(dian)(dian)子測量的(de)儀器(qi)(qi)，工業控(kong)制，醫療設備，汽車工業，智能(neng)(neng)玩具，家用電(dian)(dian)(dian)器(qi)(qi)等領域。