CIRCULAR SINGLE-LAYER TOUCH SENSORS
First Claim
1. A two-dimensional capacitive sensor device comprising:
- a sensor substrate;
a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to said substrate, said plurality of wedge shaped sensor cells arranged in a rotationally symmetric pattern about a center of said single-layer circular pattern,wherein a sensor cell of said plurality of wedge shaped sensor cells comprises a first sensor electrode and a second sensor electrode separated by a border, said first and second sensor electrodes configured for detecting changes in capacitance caused by one or more input objects, and said first and second sensor electrodes becoming substantially thinner in width approaching said center of said single-layer circular pattern than at a distance further from said center; and
sensor circuitry communicatively coupled with said sensor electrodes of said sensor cell of said plurality of wedge shaped sensor cells and configured to interpret said changes in capacitance.
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Accused Products
Abstract
A two-dimensional capacitive sensor device comprises a sensor substrate with a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to the substrate. The plurality of wedge shaped sensor cells are arranged in a rotationally symmetric pattern about a center of the single-layer circular pattern. A sensor cell of the plurality of wedge shaped sensor cells comprises a first sensor electrode and a second sensor electrode separated by a border. The first and second sensor electrodes are configured for detecting changes in capacitance caused by one or more input objects. The first and second sensor electrodes become substantially thinner in width approaching the center of the single-layer circular pattern than at a distance further from the center. A sensor circuitry is communicatively coupled with the sensor electrodes of the sensor cell and the sensor circuitry is configured to interpret the changes in capacitance.
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Citations
20 Claims
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1. A two-dimensional capacitive sensor device comprising:
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a sensor substrate; a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to said substrate, said plurality of wedge shaped sensor cells arranged in a rotationally symmetric pattern about a center of said single-layer circular pattern, wherein a sensor cell of said plurality of wedge shaped sensor cells comprises a first sensor electrode and a second sensor electrode separated by a border, said first and second sensor electrodes configured for detecting changes in capacitance caused by one or more input objects, and said first and second sensor electrodes becoming substantially thinner in width approaching said center of said single-layer circular pattern than at a distance further from said center; and sensor circuitry communicatively coupled with said sensor electrodes of said sensor cell of said plurality of wedge shaped sensor cells and configured to interpret said changes in capacitance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A two-dimensional capacitive sensor pattern comprising:
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a sensor substrate; and a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to said substrate, said plurality of wedge shaped sensor cells arranged in a rotationally symmetric pattern about a center of said single-layer circular pattern, and wherein a sensor cell of said plurality of wedge shaped sensor cells comprises at least a first sensor electrode and a second sensor electrode of different shapes that are separated by a shared piecewise linear electrode border, said first and second sensor electrodes configured for detecting changes in capacitance caused by one or more input objects. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of creating a circular sensor pattern of a two-dimensional capacitive sensor pattern with a plurality of wedge shaped sensor cells, said method comprising:
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forming a first wedge shaped sensor cell proximal to a sensor substrate, said first wedge shaped sensor cell comprising at least a first sensor electrode and a second sensor electrode of different shapes separated by a shared piecewise linear electrode border, said first sensor electrode having a different shape than said second sensor electrode; and forming an additional N−
1 wedge shaped sensor cells proximal to said sensor substrate such that said first wedge shaped sensor cell and said additional N−
1 wedge shaped sensor cells are arranged to form a single-layer circular pattern, wherein each of said N−
1 wedge shaped sensor cells comprises a rotation or reflected rotation of said first wedge shaped sensor cell. - View Dependent Claims (17, 18, 19, 20)
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Specification