Piezoelectric element, inkjet device using same, and coating method thereof
A piezoelectric element and electrode technology, which is applied in the direction of electrical elements, inking devices, piezoelectric/electrostrictive/magnetostrictive devices, etc., to achieve the effect of small droplet volume deviation
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Embodiment approach 1
[0045] Figure 1 to Figure 4 Embodiment 1 of this invention is shown.
[0046] figure 1 (a) and (b) are enlarged perspective views of the first sheet 30 and the second sheet 40 used in the piezoelectric element of the present invention. X represents the direction of the long side.
[0047] The first sheet 30 having a rectangular main surface has a first long side 30a and a second long side 30c facing in the short direction Y, and a first short side 30b and a second short side facing in the long direction X. 30d. On this main surface, the first electrode 50 is formed from the second long side 30c side toward the first long side 30a to both ends of the first short side 30b and the second short side 30d. From the side of the first long side 30a toward the second long side 30c to both ends of the first short side 30b and the second short side 30d, a first non-electrode region 51 in which electrodes are not formed is formed.
[0048] The second sheet 40 whose main surface is ...
Embodiment approach 2
[0062] Figure 5 Embodiment 2 of this invention is shown.
[0063] In Embodiment 1, the conductive film 100A on the rear surface 20c is drawn out to the front surface 20a through at least one of the right side surface 20b and the left side surface 20d. Figure 5 In the shown embodiment 2, such as Figure 5 As shown in (b), the conductive film 100A formed on the back surface 20c may also be Figure 5 As shown in (a), the conductive film 100A formed on the upper surface 20e is drawn out to the section of the end 20ab on the right side 20b side and the section of the end 20ad on the left side 20d side of the block of the intermediate product. . Other parts are the same as Embodiment 1.
[0064] In addition, in Embodiment 2, the conductive film 100A on the back surface 20c is drawn out to the front surface 20a through the conductive film 100A formed on the upper surface 20e, but when it is necessary to cope with a large driving current, the following structure can also be adop...
Embodiment approach 3
[0070] Figure 6 (a) is a plan view of the first sheet 30 used in the piezoelectric element of Embodiment 3, Figure 6(b) is a plan view of the second sheet 40 used in the piezoelectric element of the third embodiment.
[0071] In Embodiment 1, the figure 1 The illustrated first sheet 30 and second sheet 40 are stacked, pressed, and fired, but in the third embodiment, the Figure 6 The first sheet 30 and the second sheet 40 shown in (a) and (b) are laminated, pressed and fired to form a piezoelectric element.
[0072] Figure 6 The first electrode 50 , the first non-electrode region 51 , the third non-electrode region 52 , and the third electrode 53 are provided on the first sheet 30 shown in (a) and (b). A second electrode 60 , a second non-electrode region 61 , a fourth non-electrode region 62 , and a fourth electrode 63 are provided on the second sheet 40 . Other conditions are the same as Embodiment 1.
[0073] The difference from Embodiment 1 is that a third non-el...
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Abstract
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