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Inductive touch screen and methods for use therewith

  • US 8,810,523 B2
  • Filed: 04/20/2009
  • Issued: 08/19/2014
  • Est. Priority Date: 04/20/2009
  • Status: Active Grant
First Claim
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1. An inductive touch screen comprising:

  • a display layer for displaying information of the inductive touch screen;

    an inductor grid, coupled to the display layer, that includes a plurality of inductive elements arranged on a single layer;

    at least one switch matrix, coupled to the inductor grid, that selects a selected one of the plurality of inductive elements in response to at least one selection signal;

    a driver, coupled to the at least one switch matrix and the inductor grid, that generates the at least one selection signal and that drives the selected one of the plurality of inductive elements to detect a touch object in proximity to the selected one of the plurality of inductive elements and that generates touch screen data in response thereto, wherein the driver detects the touch object in proximity to the selected one of the plurality of inductive elements based on a measured self inductance of a single inductor.

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