Conductive signal paths in woven fabrics
First Claim
1. A woven fabric, comprising:
- first and second conductive warp strands oriented in a first direction;
a third conductive warp strand that has a first portion oriented in the first direction and a second portion oriented in a second direction, wherein the third conductive warp strand overlaps the first and second conductive warp strands; and
non-conductive weft strands oriented in the second direction, wherein the non-conductive weft strands are interwoven with the first, second, and third conductive strands.
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Abstract
Weaving equipment may include strand positioning equipment that positions warp strands and that inserts weft strands among the warp strands to form fabric. The weaving equipment may include one or more guide arms that pushes warp strands in the weft direction during weaving. Fabrics having warp strands that extend in both the warp direction and the weft direction may be used in forming circuitry in fabrics such as touch sensor circuitry. For example, a touch sensor in a fabric may be formed using first conductive warp strands that form first touch sensor electrodes and second conductive warp strands that form second touch sensor electrodes that overlap with the first touch sensor electrodes. The second conductive warp strands may each have a first portion that extends in the warp direction and a second portion that extends in the weft direction across the first touch sensor electrodes.
41 Citations
20 Claims
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1. A woven fabric, comprising:
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first and second conductive warp strands oriented in a first direction; a third conductive warp strand that has a first portion oriented in the first direction and a second portion oriented in a second direction, wherein the third conductive warp strand overlaps the first and second conductive warp strands; and non-conductive weft strands oriented in the second direction, wherein the non-conductive weft strands are interwoven with the first, second, and third conductive strands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A touch-sensitive textile, comprising:
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first warp strands that form first capacitive touch sensor electrodes; second warp strands that form second capacitive touch sensor electrodes and that extend perpendicular to the first warp strands, wherein the first touch sensor electrodes overlap the second touch sensor electrodes to form a touch sensor; and non-conductive weft strands interwoven with the first warp strands and second warp strands. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A fabric-based device having a width and a length, comprising:
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a first conductive strand that extends along the length of the fabric; a second conductive strand that has a first portion that extends along the length of the fabric and a second portion that extends along the width of the fabric to overlap the first conductive strand; non-conductive strands interwoven with the first and second conductive strands; and control circuitry that applies a drive signal to the first conductive strand and a sense signal to the second conductive strand. - View Dependent Claims (18, 19, 20)
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Specification