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US Patent 5528819 - Combination transducer/slider/suspension and method for making

US Patent Issued on June 25, 1996
Estimated Patent Expiration Date: Icon_subject May 26, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A disk drive assembly in which the suspension, slider and transducer are integrated and fabricated to produce a combination assembly. The combination transducer-slider-suspension assembly is batch produced by forming a plurality of the combination assemblies onto a single wafer. The wafer is then diced to separate the assemblies into individual sections. The transducers are deposited onto the wafer and the air bearing surface formed. Conductors to interconnect each transducer with the external circuits are insulated from the wafer and deposited along a path which will form the suspension. A spring-like resilient layer is then deposited over and electrically insulated from the conductors. The wafer is then pattern etched to remove a portion of the wafer backside to form the suspension and provide a transducer/slider combination having an air bearing surface after the wafer is diced to separate the individual combination assemblies. The air bearing surface is defined as the slider surface immediately adjacent the media surface during read/write operation of the disk drive assembly whether or not the slider is flying above or in sliding contact with the media surface during operation. Integrated circuit amplifiers can be deposited at the free end of the conductors prior to separation of individual assemblies.

Inventors

Application

No. 451935 filed on 05/26/1995

US Classes:

29/603.07, Fabricating head structure or component thereof29/603.12, With significant slider/housing shaping or treating360/234.5, Electrical attachment of slider/head360/246.6Plural heads for each disk side

Examiners

Primary: Hall, Carl E.

Attorney, Agent or Firm

US Patent References

3460244, 3523285, 3855625, 4375390, Thin film techniques for fabricating narrow track ferrite heads
Issued on: 03/01/1983
Inventor: Anderson ,   et al.
4450493, Magnetic head slider and actuator assembly
Issued on: 05/22/1984
Inventor: Watrous
4601782, Reactive ion etching process
Issued on: 07/22/1986
Inventor: Bianchi ,   et al.
4624048, Method of making magnetic head sliders
Issued on: 11/25/1986
Inventor: Hinkel ,   et al.
4648087, Capacitive sensing employing thin film inductors
Issued on: 03/03/1987
Inventor: Scranton ,   et al.
4670804, Expandable suspension for a read/write head in a disk file
Issued on: 06/02/1987
Inventor: Kant ,   et al.
4698708, Device for magnetically reading and writing on a flying support
Issued on: 10/06/1987
Inventor: Lazzari
4761699, Slider-suspension assembly and method for attaching a slider to a suspension in a data recording disk file
Issued on: 08/02/1988
Inventor: Ainslie ,   et al.
4789914, Thin film magnetic read-write head/arm assemblies
Issued on: 12/06/1988
Inventor: Ainslie ,   et al.
4996623, Laminated suspension for a negative pressure slider in a data recording disk file
Issued on: 02/26/1991
Inventor: Erpelding, et al.
5001583, Flexible polymeric resinous magnetic head supporting device
Issued on: 03/19/1991
Inventor: Matsuzaki
5065271Thin film magnetic head apparatus and method of manufacturing the same
Issued on: 11/12/1991
Inventor: Matsuura, et al.

Foreign Patent References

  • 59063058 EP 08/19/1984
  • 0430407A3 EP 09/19/1990
  • 55084028 JP 06/19/1980
  • 60000617 JP 05/19/1985
  • 63086109 JP 09/19/1988

International Class

G11B 005/42

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