Two-Dimensional Position Sensor

  • US 20070008299A1
  • Filed: 07/05/2006
  • Published: 01/11/2007
  • Est. Priority Date: 07/08/2005
  • Status: Active Grant
First Claim
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1. A capacitive position sensor for determining the position of an object in a sensing area, the sensor comprising a substrate having a surface with an arrangement of electrodes mounted thereon, wherein the electrodes define an array of sensing cells arranged in columns and rows to form the sensing area, each sensing cell including a column sensing electrode and a row sensing electrode, the column sensing electrodes of sensing cells in the same column being electrically coupled together and the row sensing electrodes of sensing cells in the same row being electrically coupled together, wherein row sensing electrodes of sensing cells at opposing ends of at least one of the rows are electrically coupled to one another by respective row wrap-around connections made outside of the sensing area.

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