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发明授权
CN104218935B 一体式电容感应式按键面板及其按键识别方法 有权

一体式电容感应式按键面板及其按键识别方法
摘要：
本发明涉及按键及按键检测领域,公开了种体式电容感应式金属按键面板及其按键识别方法。本发明中,通过在第金属基板上设置复数个按键字符区,在第二导体基板上对应设置有复数个按键感测部,形成复数个电容的两个电极;复数个按键字符区内分别设置有面积不等的镂空图案;复数个电容感测电路分别与复数个按键字符区和复数个按键感测部电连接并感测复数个按键字符区与复数个按键感测部形成的复数个电容;复数个电容感测电路与按键识别控制电路电连接。本发明利用体式金属面板,具有很好的耐磨性和使用寿命,并能可靠地感应按键上的按压动作,能防止灰尘进入,便于养护。
摘要（英）：

The invention relates to the field of keys and key detection and discloses an integrated capacitive-sensing key panel and a key recognition method thereof. A first metal substrate is provided with a plurality of key character regions; a second conductor substrate is provided with a plurality of key sensing portions; electrodes of a plurality of capacitors are formed, correspondingly; the key character regions are provided with hollowed patterns different in area; capacitive sensing circuits are electrically connected with the key character regions and the key sensing portions and are used for sensing the capacitors formed by the key character regions and the key sensing portions; the capacitive sensing circuits are electrically connected with a key recognition control circuit. The integrated capacitive-sensing key panel which is an integrated metal panel is good in wear resistance and long in service life, capable of reliably sensing presses of the keys and preventing entry of dust and convenient to maintain.

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