Integrated passive circuit elements for sensing devices
Assignee3M Innovative Properties Company
InventorsBilly L. Weaver, Matthew H. Frey, Lijun Zu, Cristin E. Moran
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Abstract
Capacitive sensing devices are provided that include a sensing pattern of conductive traces disposed upon the surface of a substrate and a first passive circuit element that includes a metallic conductor disposed upon the same surface of the substrate. In some embodiments, the first passive circuit element is a component of an electronic circuit that can be, for example, a low pass filter. Provided capacitive sensing devices are useful, for example, when incorporated into projected touch screen display panels for use on electronic devices.
Claims16
A capacitive sensor comprising:
- a substrate having a surface;
- a touch-sensing pattern of metallic conductive traces disposed upon the surface of the substrate;
- and
- a first passive circuit element comprising a metallic conductor disposed upon the same surface of the substrate, wherein the first passive circuit element comprises an inductor comprising a conductive trace substantially following a spiral path.
Dependencies are inferred from the claim text.