Membrane switch
First Claim
1. A membrane switch, comprising:
- an upper membrane, formed with an upper elastic tongue and an upper hollow portion along a periphery of said upper elastic tongue, said upper membrane printed with a first conductive trace on a top surface thereof, said first conductive trace extending to said upper elastic tongue; and
a lower membrane, formed with a lower elastic tongue corresponding to said upper elastic tongue and a lower hollow portion along a periphery of said lower elastic tongue, said lower membrane is printed with a second conductive trace on a bottom surface thereof, said second conductive trace extends to said lower elastic tongue, wherein said lower elastic tongue passes through said upper hollow portion of said upper membrane and is elastically extended above said upper elastic tongue, wherebywhen said lower membrane is depressed, said second conductive trace of said lower membrane contacts said first conductive trace of said upper membrane.
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Accused Products
Abstract
A membrane switch solves the problem of requiring a spacing layer or spacers as in the prior art, and includes an upper membrane, a lower membrane. The upper membrane has an upper elastic tongue, an upper hollow portion formed around the upper elastic tongue, and a first conductive trace printed on a top surface of the upper membrane with a first contact formed on the upper elastic tongue. The lower membrane has a lower elastic tongue corresponding to the upper elastic tongue, a lower hollow portion formed around the lower elastic tongue, and a second conductive trace printed on a bottom surface of the lower membrane with a second contact on the lower elastic tongue. The lower elastic tongue penetrates through the upper hollow portion of the upper membrane and elastically extends above the upper elastic tongue. When the lower membrane is depressed, the second contact contacts the first contact.
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Citations
11 Claims
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1. A membrane switch, comprising:
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an upper membrane, formed with an upper elastic tongue and an upper hollow portion along a periphery of said upper elastic tongue, said upper membrane printed with a first conductive trace on a top surface thereof, said first conductive trace extending to said upper elastic tongue; and a lower membrane, formed with a lower elastic tongue corresponding to said upper elastic tongue and a lower hollow portion along a periphery of said lower elastic tongue, said lower membrane is printed with a second conductive trace on a bottom surface thereof, said second conductive trace extends to said lower elastic tongue, wherein said lower elastic tongue passes through said upper hollow portion of said upper membrane and is elastically extended above said upper elastic tongue, whereby when said lower membrane is depressed, said second conductive trace of said lower membrane contacts said first conductive trace of said upper membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification