×

Sensor

  • US 9,182,845 B2
  • Filed: 03/24/2010
  • Issued: 11/10/2015
  • Est. Priority Date: 03/25/2009
  • Status: Active Grant
First Claim
Patent Images

1. A sensor for generating electrical signals indicating a positional property and an extent property of a mechanical interaction within a sensing zone, said sensor comprising a plurality of conductive layers, the plurality of conductive layers being placed on first and second sheets:

  • said first sheet carrying a first conductive layer having a first conductive area;

    a first electrical terminal and a second electrical terminal in electrical connection with said first conductive area;

    said first conductive area being configured to enable an electrical potential gradient to be established between said first electrical terminal and said second electrical terminal in a first direction extending across said first conductive layer;

    said second sheet carrying a second conductive layer having a second conductive area;

    a third electrical terminal in electrical connection with said second conductive area;

    said sensor being configured such that an electrical path is established between said first conductive area and said second conductive area during a mechanical interaction within said sensing zone; and

    at least one of said first sheet and said second sheet comprises a pressure-sensitive conductive layer comprising a quantum tunnelling conductance (qtc) material;

    said sensor being configured such that direct electrical contact between said first and second conductive layers is permitted during the absence of a mechanical interaction within said sensing zone.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×