Disk drive suspension

Patent metadata

Field	Value
Publication number	US-9368138-B2
Application number	US-201414272398-A
Country	US
Kind code	B2
Filing date	May 7, 2014
Priority date	Jun 14, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

In a first terminal portion, a first conductor, a terminal element as a first protection, and a first gold-plating layer are provided. The first terminal element is thicker than a base nickel layer of a slider terminal portion. The first gold-plating layer is provided with a first roughening processed portion. An electrically conductive paste contacts the roughening processed portion. In a second terminal portion, a second conductor, a terminal element as a second protection, and a second gold-plating layer are provided. The second terminal element is thicker than the base nickel layer. The second gold-plating layer is provided with a second roughening processed portion. An electrically conductive paste contacts the second roughening processed portion.

First claim

What is claimed is:

1. A disk drive suspension comprising:
a load beam;
a flexure comprising a metal base secured to the load beam, and a slider mounted thereon;
actuator elements configured to displace the slider;
a slider terminal portion which is electrically connected to a terminal of the slider;
a first terminal portion which is electrically connected to a first electrode of the actuator elements via an electrically conductive paste; and
a second terminal portion which is electrically connected to a second electrode of the actuator elements and via an electrically conductive paste;
wherein the slider terminal portion comprises a terminal conductor made of copper, a base nickel layer formed on the terminal conductor, and a gold-plating layer formed on the base nickel layer;
wherein the first terminal portion comprises a first insulating layer having an electrical insulating property provided on the metal base, a first conductor made of copper which is formed on the first insulating layer, a first terminal element made of nickel which is provided on the first conductor and has a thickness greater than the base nickel layer, and a first gold-plating layer which is formed on the first terminal element and comprises a first roughening processed portion on its surface, and the first terminal element disposed between the first roughening processed portion and the first conductor constitutes a first protection means for preventing a part of copper of the first conductor from being exposed to the first roughening processed portion;
wherein the first terminal portion comprises a cover layer having an electrical insulating property which covers the first conductor, the cover layer comprising a first opening; and
wherein the first terminal element and the first gold-plating layer comprising the first roughening processed portion are provided at a position corresponding to the first opening.

2. The disk drive suspension according to claim 1 , wherein the second terminal portion comprises a second insulating layer having an electrical insulating property provided on the metal base, a second conductor made of copper which is formed on the second insulating layer, a second terminal element made of nickel which is provided on the second conductor and has a thickness greater than the base nickel layer, and a second gold-plating layer which is formed on the second terminal element and comprises a second roughening processed portion on its surface, and the second terminal element disposed between the second roughening processed portion and the second conductor constitutes a second protection means for preventing a part of copper of the second conductor from being exposed to the second roughening processed portion.

3. The disk drive suspension according to claim 2 , wherein the second terminal portion comprises a cover layer having an electrical insulating property which covers the second conductor, and
the second terminal element and the second gold-plating layer comprising the second roughening processed portion are provided at an interior of a second opening formed in the cover layer.

4. The disk drive suspension according to claim 1 , wherein the first terminal portion comprises the first terminal element in the first opening formed in the cover layer, and includes a first overhang portion which protrudes outwardly from the first opening at a part of the first terminal element.

5. The disk drive suspension according to claim 2 , wherein the second terminal portion comprises a cover layer having an electrical insulating property which covers the second conductor, and
the second terminal portion comprises the second terminal element in a second opening formed in the cover layer, and includes an overhang portion which protrudes outwardly from the second opening at a part of the second terminal element.

6. The disk drive suspension according to claim 2 , wherein the second insulating layer comprises an opening, and the second conductor contacts the metal base such that a part of the second conductor is confined within the opening.

7. The disk drive suspension according to claim 1 , wherein the first conductor comprises a recess, and the recess accommodates a part of the first terminal element.

8. The disk drive suspension according to claim 2 , wherein the second conductor comprises a recess, and the recess accommodates a part of the second terminal element.

9. The disk drive suspension according to claim 1 , wherein the first insulating layer comprises a recess, and the recess accommodates a part of the first conductor.

10. The disk drive suspension according to claim 2 , wherein a through-hole is formed at a place extending through the second insulating layer and the second conductor, the through-hole accommodates the second terminal element, and the second terminal element contacts the metal base.

11. The disk drive suspension according to claim 1 , wherein a second base nickel layer, which is a layer of the same material as the base nickel layer of the slider terminal portion, overlaps the first terminal element.

12. The disk drive suspension according to claim 2 , wherein another base nickel layer, which is a layer of the same material as the base nickel layer of the slider terminal portion, overlaps the second terminal element.

Assignees

• Nhk Spring Co Ltd

Inventors

• Inoue Masaru
• Kawao Sei
• Niwa Rintarou

Classifications

• G11B5/4826 Primary

  Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive (G11B5/484 takes precedence; details of head housings or structures G11B5/10, G11B5/127; adjustment relative to the record carrier G11B5/56) · CPC title

• G11B5/4853 Primary

  Constructional details of the electrical connection between head and arm · CPC title

• G11B5/486

  with provision for mounting or arranging electrical conducting means or circuits on or along the arm assembly · CPC title

• G11B5/4873

  the arm comprising piezoelectric or other actuators for adjustment of the arm · CPC title