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Thin-film piezoelectric material element, head gimbal assembly and hard disk drive

a piezoelectric material and head gimbal technology, applied in the direction of piezoelectric/electrostrictive/magnetostrictive devices, electrical equipment, disposition/mounting of recording heads, etc., can solve the problems of space for accommodating the opening and the inability to secure the electrode layer

Active Publication Date: 2017-05-11
SAE MAGNETICS (HK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a space for accommodating the opening and electrode layer is not able to be secured in the width direction area of the HGA.

Method used

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  • Thin-film piezoelectric material element, head gimbal assembly and hard disk drive
  • Thin-film piezoelectric material element, head gimbal assembly and hard disk drive
  • Thin-film piezoelectric material element, head gimbal assembly and hard disk drive

Examples

Experimental program
Comparison scheme
Effect test

modified example 1

[0140]Subsequently, the thin-film piezoelectric material element 42b according to the modified example 1 will be explained with reference to FIG. 9 to FIG. 12. Here, FIG. 9 is a plan view, similar with FIG. 5, showing the thin-film piezoelectric material element 42b and the peripheral part according to the modified example 1. FIG. 10 is a sectional view taken along the line 10-10 in FIG. 9, FIG. 11 is a sectional view taken along the line 11-11 in FIG. 9. FIG. 12 is a sectional view, similar with FIG. 10, showing the thin-film piezoelectric material element 42b, connected to the suspension pad 26 by the connecting electrode 18b. Note that the connecting electrode 18b is omitted in FIGS. 9-11 for convenience of illustration.

[0141]The thin-film piezoelectric material element 42b are different in that it has upper, lower electrode pads 34A, 34B instead of upper, lower electrode pads 24A, 24B, as compared with the thin-film piezoelectric material element 12b.

[0142]The upper electrode p...

modified example 2

[0156]Subsequently, the thin-film piezoelectric material element 52b according to the modified example 2 will be explained with reference to FIG. 13 to FIG. 16. Here, FIG. 13 is a plan view, similar with FIG. 5, showing the thin-film piezoelectric material element 52b and the peripheral part according to the modified example 2. FIG. 14 is a sectional view taken along the line 14-14 in FIG. 13, FIG. 15 is a sectional view taken along the line 15-15 in FIG. 13. FIG. 16 is a sectional view, similar with FIG. 14, showing the thin-film piezoelectric material element 52b, connected to the suspension pad 26 by the connecting electrode 18b. Note that the connecting electrode 18b is omitted in FIGS. 13-15 for convenience of illustration.

[0157]The thin-film piezoelectric material element 52b are different in that it does not have upper, lower electrode pads 24A, 24B, as compared with the thin-film piezoelectric material element 12b.

[0158]However, the connecting electrode 18b, 18b are formed ...

modified example 3

[0161]Subsequently, the thin-film piezoelectric material element 62b according to the modified example 3 will be explained with reference to FIG. 17 to FIG. 20. Here, FIG. 17 is a plan view, similar with FIG. 5, showing the thin-film piezoelectric material element 62b and the peripheral part according to the modified example 3. FIG. 18 is a sectional view taken along the line 18-18 in FIG. 17, FIG. 19 is a sectional view taken along the line 19-19 in FIG. 17. FIG. 20 is a sectional view, similar with FIG. 19, showing the thin-film piezoelectric material element 62b, connected to the suspension pad 26 by the connecting electrode 18b. Note that the connecting electrode 18b is omitted in FIGS. 17-19 for convenience of illustration.

[0162]The thin-film piezoelectric material element 62b are different in that it has upper, lower electrode pads 44A, 44B instead of upper, lower electrode pads 24A, 24B, as compared with the thin-film piezoelectric material element 12b.

[0163]The upper electr...

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Abstract

A thin-film piezoelectric material element includes a laminated structure part having a lower electrode film, a piezoelectric material film laminated on the lower electrode film and an upper electrode film laminated on the piezoelectric material film. The thin-film piezoelectric material element includes a surface layer insulating film disposed on side surfaces of the laminated structure part and a top surface of the upper electrode film, and has a through hole formed on a top disposed part disposed on the top surface. The surface layer insulating film has a long-side disposed part disposed outside than the top disposed part, the long-side disposed part has a long-side width, along with the long-side direction, formed shorter than the through hole.

Description

BACKGROUND[0001]Field of the Invention[0002]The present invention relates to a thin-film piezoelectric material element which has a piezoelectric material and electrodes having thin-film like shape, head gimbal assembly and hard disk drive having the thin-film piezoelectric material element.[0003]Related Background Art[0004]A hard disk drive has a large recording capacity and is used as the heart of a storage device. The hard disk drive records and reproduces data to / from a hard disk (recording medium) by a thin-film magnetic head. A part, which the thin-film magnetic head is formed, is called as a head slider, and a part, which the head slider is mounted on the edge part, is a head gimbal assembly (will also be referred to as HGA).[0005]Further, recording and reproducing of data to / from the recording medium is performed by flying the head slider from a surface of the recording medium while rotating the recording medium, in the hard disk drive.[0006]On the other hand, it has become ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B5/48H01L41/047
CPCH01L41/0471G11B5/483H10N30/875H10N30/206
Inventor XIONG, WEIIIJIMA, ATSUSHI
Owner SAE MAGNETICS (HK) LTD