US Patent Application 18324082. PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, AND IMAGE RECORDING APPARATUS simplified abstract

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PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, AND IMAGE RECORDING APPARATUS

Organization Name

CANON KABUSHIKI KAISHA==Inventor(s)==

[[Category:TAKASHI Ikeda of Kanagawa (JP)]]

PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, AND IMAGE RECORDING APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18324082 titled 'PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, AND IMAGE RECORDING APPARATUS

Simplified Explanation

The patent application describes a piezoelectric element that consists of a lower electrode, a piezoelectric film, and an upper electrode on a substrate.

  • The element includes an aluminum oxide film between the lower electrode and the piezoelectric film.
  • The aluminum oxide film contains at least one element chosen from group III, group IV, and group V of the periodic table.
  • The purpose of the aluminum oxide film is not explicitly stated in the abstract.


Original Abstract Submitted

A piezoelectric element includes a lower electrode, a piezoelectric film, and an upper electrode in this order on a substrate. An aluminum oxide film containing at least one element selected from the group consisting of elements of group III, elements of group IV, and elements of group V, of the periodic table is disposed between the lower electrode and the piezoelectric film.

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