Mesh patterns for touch sensor electrodes
Assignee3M Innovative Properties Company
InventorsBilly L. Weaver, Roger W. Barton, Thomas Herdtle, Brock A. Hable
Life of this patent
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Abstract
An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous electrode trunk area, and including branching elements which extend outward from the electrode trunk area. The electrically continuous trunk area is patterned coincident an underlying reference mesh pattern, as are the branching elements.
Claims21
An electrode for a touch sensor, comprising
- an array of discontinuous metallic micro-wire conductors establishing a reference mesh having a characteristic average cell spacing;
- a first conductive pattern of continuous metallic micro-wires disposed along a first direction, wherein the conductive pattern is coincident with the reference mesh;
- and,
- a plurality of electrically continuous branching elements electrically connected to the first conductive pattern and extending outward therefrom,
- wherein the branching elements are coincident with the reference mesh and are comprised of metallic micro-wires, and
- wherein the branching elements include a plurality of different lengths.
A touch sensor comprising first and second electrode layers separated by a dielectric layer, the first and second electrode layers each comprising a plurality of electrodes, at least some electrodes of the first electrode layer comprising:
- a first array of discontinuous metallic micro-wire conductors establishing a first reference mesh;
- a first conductive pattern of continuous metallic micro-wires disposed along a first direction, wherein the first conductive pattern is coincident with the first reference mesh;
- and
- a first plurality of electrically continuous branching elements electrically connected to the first conductive pattern and extending outward therefrom, wherein the first plurality of branching elements are coincident with the first reference mesh and are comprised of metallic micro-wires,
- wherein at least some of the branching elements the first plurality of branching elements are interleaved with branching elements of other electrodes of the first electrode layer.
Dependencies are inferred from the claim text.