Invention Grant
US08258418B2 Keyboard dome overlay structure 有权
键盘圆顶覆盖结构

Keyboard dome overlay structure
Abstract:
A dome overlay structure for a mobile device keyboard includes a plurality of dome switches, a circuit board disposed beneath the plurality of dome switches with each dome switch electrically coupled to the circuit board, a main overlay disposed over the plurality of dome switches, and a first adhesive dab centrally interposed between the dome switch and the main overlay with a second adhesive dab surrounding the first adhesive dab. Each dome switch has a central portion and a non-central portion. The first adhesive dab can bond the central portion of the dome switch to the main overlay. The second adhesive dab is configured to form a gap between the second adhesive dab and the non-central portion of the dome switch in an unactuated configuration and configured to contact the non-central portion of the dome switch in an actuated configuration.
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