发明名称 |
PIEZOELECTRIC SUBSTRATE, ASSEMBLY USING SAME, LIQUID EJECTION HEAD AND RECORDING DEVICE |
摘要 |
[Problem] The purpose of the present invention is to provide: a piezoelectric substrate wherein the bonding strength between an electrode of the piezoelectric substrate, particularly an electrode for a common electrode and an external member is high; an assembly which uses this piezoelectric substrate; a liquid ejection head; and a recording device. [Solution] A piezoelectric substrate according to the present invention is a plate-like piezoelectric substrate which comprises: a piezoelectric ceramic layer (21b); a plurality of first electrodes (25) and a second electrode (28), which are arranged on one main surface of the piezoelectric ceramic layer (21b); a third electrode (24) that is arranged on the other main surface of the piezoelectric ceramic layer (21b) so as to face the plurality of first electrodes (25); and a through conductor (34) that electrically connects the second electrode (28) and the third electrode (24) with each other. This piezoelectric substrate is characterized in that: when the piezoelectric substrate is viewed in plan, the second electrode (28) comprises a connection part (28a) that is connected to the through conductor (34) and a narrow part (28b) that is smaller in width than the connection part (28a); and the second electrode (28) is electrically connected to an external member at the narrow part (28b). |
申请公布号 |
WO2015099046(A1) |
申请公布日期 |
2015.07.02 |
申请号 |
WO2014JP84320 |
申请日期 |
2014.12.25 |
申请人 |
KYOCERA CORPORATION |
发明人 |
YUU,YOSHIHIRO;EITOKU,KOUJI;HORIUCHI,KOUSEI |
分类号 |
B41J2/14 |
主分类号 |
B41J2/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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