Piezoelectric element and piezoelectric element applied device

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United States of America Patent

PATENT NO 10199559
APP PUB NO 20170345994A1
SERIAL NO

15137240

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Abstract

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There is provided a piezoelectric element which includes a first electrode which is formed on a substrate, a piezoelectric layer which is formed on the first electrode, and is formed from a compound oxide having an ABO3 type perovskite structure in which potassium (K), sodium (Na), niobium (Nb), and manganese (Mn) are provided, and a second electrode which is formed on the piezoelectric layer. The manganese includes bivalent manganese (Mn2+), trivalent manganese (Mn3+), and tetravalent manganese (Mn4+). A molar ratio (Mn2+/Mn3++Mn4+) of the bivalent manganese to a sum of the trivalent manganese and the tetravalent manganese is equal to or greater than 0.31.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kitada, Kazuya Suwa, JP 61 111
Omoto, Masayuki Chino, JP 9 6

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