SENSE ELECTRODE DESIGN
First Claim
Patent Images
1. A touch sensitive device comprising:
- a plurality of drive electrodes;
a plurality of sense electrodes arranged in a pattern to receive charge from the drive electrodes, the pattern having extreme portions having charge transfer times, wherein the charge transfer times at multiple extreme portions are substantially equal to a worst case charge transfer time.
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Accused Products
Abstract
A touch sensitive device includes a plurality of sense electrodes arranged in a pattern to receive charge from drive electrodes. The pattern of sense electrodes has extreme portions having worst case charge transfer times, wherein the worst case charge transfer time at multiple extreme portions is substantially equal.
119 Citations
25 Claims
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1. A touch sensitive device comprising:
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a plurality of drive electrodes; a plurality of sense electrodes arranged in a pattern to receive charge from the drive electrodes, the pattern having extreme portions having charge transfer times, wherein the charge transfer times at multiple extreme portions are substantially equal to a worst case charge transfer time. - View Dependent Claims (2, 3, 4, 5)
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6. A sense electrode for a touch sensitive device, the sense electrode comprising:
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a spine; multiple width crossbars coupled to the spine, wherein the crossbars are arranged with increasing width from a point of the spine to couple to sense circuitry. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A touch sensitive device comprising:
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a layer of longitudinal adjacent drive electrodes separated from each other by a gap, the layer to be positioned above a display; a layer of sense electrodes, the sense electrodes formed in the shape of spines running transverse to the drive electrodes and having different width crossbars running in the same direction as the drive electrodes. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method comprising:
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forming a layer of longitudinal adjacent drive electrodes separated from each other by a gap, the layer providing a shield from electric fields from a display; and forming a layer of sense electrodes separated from the drive electrodes, the sense electrodes formed in the shape of spines running transverse to the drive electrodes and having different width crossbars running in the same direction as the drive electrodes. - View Dependent Claims (25)
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Specification