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Coordinate input apparatus operable with conductor such as finger and non-conductor such as pen

  • US 20010024194A1
  • Filed: 02/26/2001
  • Published: 09/27/2001
  • Est. Priority Date: 02/29/2000
  • Status: Active Grant
First Claim
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1. A coordinate input apparatus comprising:

  • an electrostatic capacitive detection section for detecting coordinates by operating the electrostatic capacitive detection section with an indicator so as to change the electrostatic capacitance between an X electrode and an Y electrode, which are arranged so as to oppose each other via an insulating layer interposed therebetween; and

    a pressure-sensing detection section having a resistor and a conductor arranged so as to oppose the resistor, the pressure-sensing detection section detecting coordinates based on the resistance of the resistor at a contact point between the resistor and the conductor when being operated with a predetermined pressure, wherein the electrostatic capacitive detection section is deposited on the operating surface side of the pressure-sensing detection section, wherein the electrostatic capacitive detection section is flexible and is capable of being pressed against the pressure-sensing detection section, and wherein the pressure-sensing detection section comprises a high resistance resistor and a low resistance resistor arranged around the high resistance resistor, a voltage being applied alternately between low resistance resistor portions opposing in an X direction and between low resistance resistor portions opposing in an Y direction so that the coordinates are detected based on a voltage detected between the low resistance resistor and the conductor by causing the conductor to make contact with the high resistance resistor.

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