In-molded capacitive switch

An in-mold molding and capacitive technology, which is applied in the direction of electric switches, electronic switches, magnetic/electric field switches, etc., can solve the problems that capacitive switches cannot be integrated with profiling structures
CN101809691AInactive Publication Date: 2010-08-18INK LOGIX
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INK LOGIX
Publication Date
2010-08-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

An article of manufacture having an in-molded capacitive switch and method of making the same are shown and described. In one disclosed method, a conductive ink sensing zone is printed on a film. The film is formed to a desired shape and put in an injection mold. A molten plastic material is introduced into the injection mold to form a rigid structure that retains the film.
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Description

[0001] related application

[0002] This application claims priority from US Provisional Patent Application No. 60 / 925,421, filed April 20, 2007, which is hereby incorporated by reference. technical field

[0003] The present invention relates to a touch sensitive switch, and more particularly, to a capacitive switch molded in a plastic structure. Background technique

[0004] Touch-sensitive switches are used, for example, in touchpads of household appliances (eg, stoves, washers, dryers, blenders, ovens, etc.), as well as portable devices (eg, IPODs, phones). Typical touch-sensitive switches utilize either resistive film sensing or capacitive sensing. Resistive film sensing utilizes two conductive resistive plates separated by a thin spacer. When a force is applied gently to one of the plates, making contact with the other, the resistance of the system increases. This in turn increases the voltage, which can be used to provide an output. This type of technique can be u...

Claims

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