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Force detection apparatus, display apparatus, and organic electro-luminescence display apparatus

  • US 10,353,507 B2
  • Filed: 08/01/2017
  • Issued: 07/16/2019
  • Est. Priority Date: 08/02/2016
  • Status: Active Grant
First Claim
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1. A force detection apparatus comprising:

  • a first electrode facing an input surface to which an object to be detected applies force, and configured to be supplied with a drive signal;

    a conductor facing the first electrode, and supplied with a reference potential;

    a second electrode and a third electrode arranged between the first electrode and the conductor;

    a first dielectric layer arranged between the first electrode, and the second electrode and the third electrode; and

    a second dielectric layer arranged between the second electrode and the third electrode, and the conductor,wherein the second electrode is supplied with the reference potential,wherein a signal that is the same as the drive signal is supplied in synchronization with the drive signal to the third electrode, andwherein a change amount per unit force of a first capacitance obtained when a thickness of the first dielectric layer is decreased by the force is equal to a change amount per unit force of a second capacitance obtained when a thickness of the second dielectric layer is decreased by the force, the first capacitance being capacitance between the first electrode and the second electrode, and the second capacitance being capacitance between the third electrode and the conductor.

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