Invention Application
US20070209920A1 Keyboard and membrane switch for keyboard 失效
键盘和薄膜开关

Keyboard and membrane switch for keyboard
Abstract:
A disclosed keyboard includes a housing with a base member, a top plane member, and a membrane switch installed inside the housing. The membrane switch has a first resin sheet, a second resin sheet, and a spacer resin sheet arranged between the first and second resin sheets. The membrane switch includes a UWB flat antenna that has an antenna element pattern formed on the first resin sheet, a microwave transmission line extending from the antenna element pattern, and a ground pattern arranged in a position facing the antenna element pattern.
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