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Two dimensional position sensor

  • US 9,927,476 B2
  • Filed: 12/30/2013
  • Issued: 03/27/2018
  • Est. Priority Date: 05/31/2006
  • Status: Active Grant
First Claim
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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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