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Apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer

a technology of inductive head and seed layer, applied in the field of magnetic transducers, can solve problems such as limit the coil pitch

Inactive Publication Date: 2007-01-04
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach enables the production of magnetic storage devices with increased areal densities by alleviating inter-coil shorting and plating issues, facilitating more precise coil formation and improved magnetic recording capabilities.

Problems solved by technology

However, current processing of electroplating the coil limits the coil pitch.

Method used

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  • Apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer
  • Apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer
  • Apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer

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Embodiment Construction

[0033] In the following description of the exemplary embodiment, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration the specific embodiment in which the invention may be practiced. It is to be understood that other embodiments may be utilized as structural changes may be made without departing from the scope of the present invention.

[0034] The present invention provides an apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer. The present invention solves the above-described problems by using an aligned process where the base plate imprint is fabricated on an electrically insulating layer and the reversed image is fabricated and etched into the coil insulation material, e.g., hard bake photoresist to alleviate the problems associated with complete ion removal of the seed layer between high aspect ratio coils. The present invention would also not be prone to plating non-...

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Abstract

An apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer is disclosed. The present invention uses an aligned process where the base plate imprint is fabricated on an electrically insulating layer and the reversed image is fabricated and etched into the coil insulation material, e.g., hard bake photoresist to alleviate the problems associated with complete ion removal of the seed layer between high aspect ratio coils. The present invention would also not be prone to plating non-uniformities (voids), and would not be subject to seed layer undercutting in a wet etch step process.

Description

RELATED PATENT DOCUMENTS [0001] This is a divisional of patent application Ser. No. 10 / 101,196, filed Mar. 18, 2002 (SJO920010045US1), to which Applicant claims priority under 35 U.S.C. §120.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates in general to magnetic transducers, and more particularly to an apparatus for providing an aligned coil for an inductive head structure using a patterned seed layer. [0004] 2. Description of Related Art [0005] Magnetic recording is a key and invaluable segment of the information-processing industry. While the basic principles are one hundred years old for early tape devices, and over forty years old for magnetic hard disk drives, an influx of technical innovations continues to extend the storage capacity and performance of magnetic recording products. For hard disk drives, the areal density or density of written data bits on the magnetic medium has increased by a factor of more than two million since the f...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B5/147G11B5/17G11B5/31G11B5/39G11B5/48H01F17/00H01F41/04
CPCG11B5/17G11B5/313G11B5/3163G11B5/3967G11B5/486H01F17/0006Y10T29/4902H01F41/046Y10T29/49073Y10T29/4906Y10T29/49064Y10T29/49062H01F41/043
Inventor DINAN, THOMASLILLE, JEFFREYNGUYEN, SONSANTINI, HUGO
Owner INT BUSINESS MASCH CORP