TOUCH SENSITIVE DEVICES WITH COMPOSITE ELECTRODES
First Claim
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1. A multi-layer touch panel, comprising:
- a first layer comprising a transparent touch surface;
an upper electrode layer comprising a plurality of composite electrodes comprised of a plurality of micro-wire conductors;
a lower electrode layer comprising a plurality of electrodes, the upper electrodes and lower electrodes defining an electrode matrix having nodes where the upper and lower electrodes intersect, and wherein the upper electrode layer is disposed between the first layer and the lower electrode layer; and
,a dielectric layer disposed between the upper electrode layer and the lower electrode layer.
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Abstract
A matrix touch panel having upper and lower electrodes, the upper electrodes being composite electrodes made of a plurality of spaced micro-wires, and allowing, for example, an electric field from lower electrodes to pass between the micro-wires and thereby capacitively couple with a touching object, such as a finger.
214 Citations
25 Claims
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1. A multi-layer touch panel, comprising:
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a first layer comprising a transparent touch surface; an upper electrode layer comprising a plurality of composite electrodes comprised of a plurality of micro-wire conductors; a lower electrode layer comprising a plurality of electrodes, the upper electrodes and lower electrodes defining an electrode matrix having nodes where the upper and lower electrodes intersect, and wherein the upper electrode layer is disposed between the first layer and the lower electrode layer; and
,a dielectric layer disposed between the upper electrode layer and the lower electrode layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for identifying locations of touches or near-touches on a touch sensitive apparatus, comprising:
sensing, with an electronic controller, a value indicative of the change of mutual capacitance between an overlapping upper electrode and a lower electrode disposed in a matrix-type touch sensor, the change in mutual capacitance induced by the presence of an object proximate to the touch sensor, wherein the upper electrode is a composite electrode comprised of a plurality of micro-wire conductors. - View Dependent Claims (20, 21, 22, 23, 24, 25)
Specification