Sensor array with edge pattern
First Claim
1. A capacitive sensor array comprising:
- a first unit cell formed by a first intersection of a first electrode and a second electrode; and
a second unit cell formed adjacent to the first unit cell and formed by a second intersection of the first electrode and a third electrode, whereina first trace of the first electrode in the first unit cell has a first edge length along the second electrode, anda second trace of the first electrode in the second unit cell has a second edge length along the third electrode, the second edge length dissimilar from the first edge length along the second electrode.
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Abstract
A capacitive sensor array may include a first set of sensor electrodes and a second set of sensor electrodes. Each of the second set of sensor electrodes may intersect each of the first set of sensor electrodes to form a plurality of unit cells each corresponding to a pair of sensor electrodes including one of the first set of sensor electrodes and one of the second set of sensor electrodes. Each point within each of the plurality of unit cells may nearer to a gap between the pair of sensor electrodes corresponding to the unit cell than to a gap between any different pair of sensor electrodes, and a first trace pattern within a first unit cell of the plurality of unit cells may be different from a second trace pattern within an adjacent unit cell of the plurality of unit cells.
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Citations
20 Claims
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1. A capacitive sensor array comprising:
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a first unit cell formed by a first intersection of a first electrode and a second electrode; and a second unit cell formed adjacent to the first unit cell and formed by a second intersection of the first electrode and a third electrode, wherein a first trace of the first electrode in the first unit cell has a first edge length along the second electrode, and a second trace of the first electrode in the second unit cell has a second edge length along the third electrode, the second edge length dissimilar from the first edge length along the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a capacitive sensing circuit; a first electrode coupled to the capacitive sensing circuit; a second electrode coupled to the capacitive sensing circuit, the second electrode disposed perpendicular to the first electrode, the first and second electrodes forming a first unit cell at a first intersection between the first electrode and the second electrode; and a third electrode coupled to the capacitive sensing circuit, the third electrode disposed perpendicular to the first electrode, the first and third electrodes forming a second unit cell at a second intersection between the first electrode and the third electrode, wherein; the first electrode comprises a first trace having a first edge length along the second electrode within the first unit cell, the first electrode comprises a second trace having a second edge length along the third electrode within the second unit cell, the first and second edge lengths dissimilar. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method comprising:
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forming a first electrode disposed; forming a second electrode perpendicular to the first electrode, wherein a first intersection between the first electrode and the second electrode identifies a first unit cell; and forming a third electrode perpendicular to the first electrode, wherein a second intersection between the first electrode and the third electrode identifies a second unit cell, wherein a first trace of the first electrode in the first unit cell has a first edge length along the second electrode, and a second trace of the first electrode in the second unit cell has a second edge length along the third electrode, the second edge length dissimilar from the first edge length. - View Dependent Claims (17, 18, 19, 20)
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Specification