Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wen-Kuang Hou0
Date of Patent
June 2, 2009
0Patent Application Number
118592450
Date Filed
September 21, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A key structure comprises a membrane circuit, a substrate, a cover and a press element. The membrane circuit comprises at least one first signal generator and a second signal generator. The substrate is disposed below the membrane circuit to support the membrane circuit. The cover comprises a body and at least one protrusion, wherein the protrusion is disposed on the body corresponding to the first signal generator. The press element is disposed on the second signal generator, wherein when force is applied on the cover, the protrusion presses the first signal generator.
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