×

Acoustic device using higher order harmonic piezoelectric element

  • US 7,000,474 B2
  • Filed: 02/28/2003
  • Issued: 02/21/2006
  • Est. Priority Date: 02/28/2003
  • Status: Active Grant
First Claim
Patent Images

1. A touch sensor having an operating frequency, comprising:

  • a touch sensitive substrate; and

    a piezoelectric element operably coupled to the substrate, wherein the piezoelectric element is characterized by a higher order odd resonant frequency approximately equal to the operating frequency, the higher order frequency being selected from a frequency consisting of a third, fifth, and seventh order resonant frequency.

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