PIEZOELECTRIC ELEMENT, INKJET DEVICE USING SAME, AND APPLICATION METHOD THEREOF

摘要

The piezoelectric element includes first and second sheets 30 and 40 that are stacked and burned. In this stacked state, a second electrode 60 is located on a first long side 30a having a first non-electrode region 51. Thus, before a conductive film 100A is formed, the end face of a first electrode 50 and the end face of the second electrode 60 are exposed on lateral surfaces 20b and 20d on the same side and can be observed thereon. Slits 91 are formed at certain intervals in a lengthwise direction X. The conductive film 100A is formed so as to apply a voltage between the second electrode 60 exposed on a front surface 20a and ends 20ab and 20ad, thereby driving the piezoelectric element only with connection from the front surface 20a.

主权项

1. A piezoelectric element that is a block of a rectangular solid,
the block comprising: a first sheet with a rectangular principal surface having a first short side, a second short side, a first long side, and a second long side, the principal surface including a first electrode formed up to at least only a part of the first short side and up to only the second long side; and a second sheet with a rectangular principal surface having a third short side, a fourth short side, a third long side, and a fourth long side, the principal surface including a second electrode formed up to at least only a part of the third short side and up to only the third long side, the sheets being stacked such that the first long side and the third long side are aligned with each other and the first short side and the third short side are aligned with each other with the principal surfaces placed face up or face down, the block further comprising: a plurality of slits that are formed perpendicularly to the first long side and are spaced at predetermined intervals along the first long side of the block; and a conductive film electrically connecting: a surface including the second long side of the block; at least one of two ends along the first long side on a surface including the first long side of the block; and a surface including the first short side and the third short side of the block.