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Hard disk slider internally installed with actuator synthesising two-stage location with thermal high-fly control

A two-stage positioning and actuator technology, applied in the direction of the support head, can solve the problems of difficulty in manufacturing and installing the two-stage positioning actuator

Inactive Publication Date: 2013-11-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manufacturing and installation of secondary positioning actuators are difficult at such a small head size

Method used

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  • Hard disk slider internally installed with actuator synthesising two-stage location with thermal high-fly control
  • Hard disk slider internally installed with actuator synthesising two-stage location with thermal high-fly control
  • Hard disk slider internally installed with actuator synthesising two-stage location with thermal high-fly control

Examples

Experimental program
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Embodiment Construction

[0017] The structure of the synthetic actuator slide block in the present invention will be further described in detail with reference to the accompanying drawings and examples.

[0018] figure 1 is the overall structure diagram of the existing slider, figure 2 It is a partial cross-sectional view of the existing heat-containing fly height controller slider, image 3 is a schematic diagram of the local structure of the slider including the synthetic actuator in the embodiment of the present invention. in, figure 1 The larger cube in the figure is the slider substrate, with the air bearing surface on its lower surface, while the smaller cube on the sides is the slider spacer, inside which the magnetic head and actuator are embedded. figure 2 The middle upper protective layer and the lower protective layer sandwich the read head, the write head is a helically wound coil, the small circle in the figure is the cross section of the helix, and the thermal fly high controller is...

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PUM

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Abstract

The invention discloses a hard disk slider internally installed with an actuator synthesising a two-stage location with a thermal high-fly control, comprising two actuators symmetrically disposed on a protective layer under a read head by taking the head as a centre, wherein the actuator mainly comprises a heater and a radiator. The heater is started to generate two drive forces with reverse directions on the head in a take-off direction to perform a two-stage location and generate two drive forces with the same direction in a direction perpendicular to a disk to perform a high-flying control. Additionally, because the radiator conducts the heat generated by the heater to a magnetic recording media via an air bearing, the response frequency of a micro-driver based on a thermal expansion mechanism in the invention can be greatly increased, and the difficulty of performing a write operation on a high-coercivity media under a micro field intensity can be reduced.

Description

technical field [0001] The invention belongs to the technical field of computer storage devices, and in particular relates to a hard disk slider with a built-in secondary positioning and thermal flyover control composite actuator. Background technique [0002] With the rapid expansion of the digital universe, the amount of information to be stored will increase from 1.6×10 in 2006 to 20 bits increased to 5.3×10 in 2020 22 bit. In order to meet this astonishing storage growth demand, as the most important non-volatile storage device in current large-scale storage applications, it is very important that hard disk drives continue to increase rapidly in storage capacity. The recording density of current hard disk products has reached about 500Gb / in 2 , and is expected to maintain an annual growth rate of 30% to 50%, but the storage industry believes that if the traditional recording method is used, the recording density limit is 1Tb / in 2 . The root cause of this limit is th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B21/21
Inventor 陈进才周功业陈明卢萍
Owner HUAZHONG UNIV OF SCI & TECH