TWO-DIMENSIONAL POSITION SENSOR
12 Assignments
0 Petitions
Accused Products
Abstract
A two-dimensional position sensor is formed by drive electrodes (52) and sense electrodes (62, 64, 66) both extending in the x-direction and interleaved in the y-direction. The sense electrodes comprise several groups, two of which co-extend in the x-direction over each different portions of extent in the x-direction. The drive and sense electrodes are additionally arranged to capacitively couple with each other. In use, drive signals are applied to the drive electrodes and then the resultant sense signals received from the sense electrodes measured. The position of a touch or stylus actuation on the sensor is determined in the x- and y-directions as follows. In the x-direction, the position is determined by an interpolation between sense signals obtained from co-extending pairs of sense electrodes, and in the y-direction by interpolation between sense signals obtained from different sequences of drive signals applied to the drive electrodes.
68 Citations
34 Claims
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1-14. -14. (canceled)
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15. A sensor comprising:
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a substrate; a plurality of drive electrodes provided on the substrate; plurality of sense electrodes provided on the substrate, each of the sense electrodes being capacitively coupled with at least one of the drive electrodes; and a controller, comprising at least one drive unit and at least one sense unit, the controller configured to apply a drive signal to each of the drive electrodes and to sense signals received from the sense electrode, wherein the each of the plurality of sense electrodes is formed of at least three elements that cooperate to form a respective sense electrodes. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An electronic device, comprising:
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a housing; a touch-sensitive sensor disposed within the housing, the touch-sensitive sensor comprising; a substrate; a plurality of drive electrodes provided on the substrate; plurality of sense electrodes provided on the substrate, each of the sense electrodes being capacitively coupled with at least one of the drive electrodes, wherein the each of the plurality of sense electrodes is formed of at least three elements that cooperate to form a respective sense electrode; and a controller, comprising at least one drive unit and at least one sense unit, the controller configured to apply a drive signal to each of the drive electrodes and to sense signals received from the sense electrodes. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification