| 摘要 |
A method and apparatus for constructing assemblies for keypads with different key layouts using substrates each having the same pattern of electrical-contact regions formed thereon and domed contact elements. In the invention, a first design of key layouts is selected, a first insulating layer having a plurality of apertures dependent on the first design are provided, and the domed contact elements are mounted to confront corresponding electrical-contact regions of a first of the substrates with the first insulating layer disposed therebetween. Each of the apertures are in register with the domed contact element to thereby produce an assembly having the first design of a key layout. Further, in the invention a second design of a key layout is selected, where the second design of a key layout is different from the first design of a key layout, a second insulating layer having a plurality of apertures dependent on the second design of a key layout is provided; and the domed contact elements are mounted to confront corresponding electrical-contact regions of a second of the substrates with the second insulating layer disposed therebetween. Each of the apertures are in register with a domed contact element to thereby produce an assembly having the second design of a key layout.
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