×

Shielded electrostatic microactuators for magnetic-head positioning such devices

  • US 5,959,808 A
  • Filed: 12/30/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 12/30/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A disk drive, comprising:

  • a magnetic disk having a plurality of tracks;

    a voice coil motor coarsely positioning a read/write head over a selected track; and

    a microactuator finely positioning the read/write head over the selected track, the microactuator including,a stationary electrode formed on a substrate;

    an electrically conducting bottom layer formed on the substrate, the bottom layer being electrically isolated from the stationary electrode;

    a movable electrode; and

    an electrically conducting top layer attached to the movable electrode, the top layer being electrically connected to the bottom layer and the movable electrode, and the top layer, the bottom layer and the movable electrode surrounding the stationary electrode and containing an electric field generated between the stationary electrode and the movable electrode.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×