Two dimensional position sensor
First Claim
1. A position sensor comprising:
- a plurality of first electrodes that generally extend in a first direction; and
a plurality of second electrodes that generally extend in the first direction and are interleaved with the first electrodes in a second direction, the first electrodes and the second electrodes being arranged together in a pattern that defines a sensitive area, the first electrodes comprising first, second, and third groups of elements, the elements in each of the first, second, and third groups of elements being connected to each other but not to elements in another one of the groups, the elements in the first, second, and third groups having shapes configured for;
adjacent ones of the elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction; and
adjacent ones of the elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction.
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Accused Products
Abstract
A position sensor comprises first and second electrodes that generally extend in a first direction and are arranged in a pattern that defines a sensitive area, the second electrodes interleaved with the first electrodes in a second direction. The first electrodes comprise first, second, and third groups of elements, elements in the first, second, and third groups being connected to each other but not to elements in another group. The elements have shapes configured for adjacent elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction, and adjacent elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction.
58 Citations
20 Claims
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1. A position sensor comprising:
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a plurality of first electrodes that generally extend in a first direction; and a plurality of second electrodes that generally extend in the first direction and are interleaved with the first electrodes in a second direction, the first electrodes and the second electrodes being arranged together in a pattern that defines a sensitive area, the first electrodes comprising first, second, and third groups of elements, the elements in each of the first, second, and third groups of elements being connected to each other but not to elements in another one of the groups, the elements in the first, second, and third groups having shapes configured for; adjacent ones of the elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction; and adjacent ones of the elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device comprising:
a position sensor comprising; a plurality of first electrodes that generally extend in a first direction; and a plurality of second electrodes that generally extend in the first direction and are interleaved with the first electrodes in a second direction, the first electrodes and the second electrodes being arranged together in a pattern that defines a sensitive area, the first electrodes comprising first, second, and third groups of elements, the elements in each of the first, second, and third groups of elements being connected to each other but not to elements in another one of the groups, the elements in the first, second, and third groups having shapes configured for; adjacent ones of the elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction; and adjacent ones of the elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction; and circuitry configured when executed to drive and process information from the position sensor. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification