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CAPACITANCE SENSOR

  • US 20080211519A1
  • Filed: 02/20/2008
  • Published: 09/04/2008
  • Est. Priority Date: 02/20/2007
  • Status: Abandoned Application
First Claim
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1. A code-type sensor for detecting a change in capacitance, comprising:

  • a plurality of detection electrodes for detecting a change in capacitance;

    a shield electrode surrounding the plurality of detection electrodes so as to restrict a detection range of the capacitance and having an opening in a direction of detection; and

    a contact detecting electrode for detecting contact disposed along a longitudinal direction of the sensor, whereinthe detection electrodes are disposed at a position close to the opening in the shield electrode and at a position far from the opening in the shield electrode,the contact detecting electrode is disposed on a back side in the direction of detection of the shield electrode, andthe respective detection electrodes are integrally connected to each other in such a way as to be held in a separate state, the detection electrodes and the shield electrode are integrally connected to each other in such a way as to be held in a separate state, and the shield electrode and the contact detecting electrode are kept in such a way as to be held in a separate state across a clearance in a natural state and are brought into contact with each other when the sensor is pressed in the direction of detection by contact of an object.

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