Key structure

A key structure comprises a thin film circuit board, a key bottom plate, a bonding layer and an elastic piece. The key bottom plate is arranged above the film circuit board, and the key bottom plate is provided with a first central opening and a first peripheral opening which are separated from each other. The bonding layer is arranged between the thin film circuit board and the key bottom plate, the bonding layer is provided with a second central opening and a second peripheral opening communicated with the second central opening, the second central opening is located under the first central opening, and the second peripheral opening is communicated with the first peripheral opening. The elastic piece is arranged above the thin film circuit board, and the bottom of the elastic piece is located in the first central opening. 一种按键结构，包括薄膜线路板、按键底板、接着层及弹性件。按键底板设置在薄膜线路板上方，按键底板具有第一中央开口及第一周边开口彼此分离。接着层设置在薄膜线路板与按键底板之间，接着层具有第二中央开口及连通第二中央开口的第二周边开口，第二中央开口位于第一中央开口的正下方，第二周边开口连通第一周边开口。弹性件设置在薄膜线路板上方，弹性件的底部位于第一中央开口内。