Sae Magnetics (h.k.) Limited

Lin Guo

MingGao Yao

YiRu Xie

Yu Sun

Ming Gao Yao

Yi Xie

Sun Yu

A head gimbal assembly may comprise a slider, a micro-actuator attached to the slider, a flexure to mount the slider and the micro-actuator, and a suspension comprising a support region, a main portion, and a moving portion, wherein the flexure comprises a plurality of trace sets to electrically couple the micro-actuator and the slider, and wherein the plurality of trace sets are laminated generally parallel to each other.

Suspension with locally strengthened integrated trace connections

A PZT micro-actuator for a head gimbal assembly includes a pair of separate PZT elements and each PZT element has a body and a plurality of electrical pads. The body has at least two electrode-piezoelectric combination layers laminated together. The at least two electrode-piezoelectric combination layers are physically connected with but electrically isolated from each other. Each electrode-piezoelectric combination layer has at least two of the electrical pads thereon. The electrical pads extend out from the body of the corresponding PZT element. All the electrical pads of each PZT element are offset a predetermined distance therebetween to be electrically isolated. The present invention also discloses a head gimbal assembly (HGA) with the PZT micro-actuator, an assembling method for the head gimbal assembly and a disk drive unit having such HGA.

Disk drive head gimbal assembly including a PZT micro-actuator with a pair of separate PZT elements

A vibration sensor for a slider includes a base portion, a loading portion adapted for supporting the slider mounted thereon and formed within the base portion, and at least two connection arms connecting the base portion with the loading portion. The vibration sensor of the present invention can sensitively sense a vibration of the slider, thus maintaining the flying height of the slider, and finally improving the performance thereof. The invention also discloses a suspension, a head gimbal assembly and a manufacturing method thereof, and a disk drive unit including the same.

Vibration sensor, suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit including the same

A thin film piezoelectric element includes a piezoelectric thin film layer, a seed layer and an elastic substrate layer. The piezoelectric thin film layer is a laminated structure comprising a first electrode layer, a second electrode layer and a piezoelectric layer sandwiched between the first electrode layer and the second electrode layer. The seed layer is formed on the second electrode layer, and the elastic substrate layer is formed on the seed layer. The thin film piezoelectric element is a single layer structure and has an elastic substrate layer for supporting the single layer structure, thereby it has enough stiffness and flexibility to afford facilities for manufacture and assembly and to avoid film peeling and deformation, ultimately increasing the production efficiency and lowering the cost. The invention also discloses a method for manufacturing the thin film piezoelectric element, a head gimal assembly and a disk drive unit with the same.

Thin film piezoelectric element and its manufacturing method, head gimbal assembly and disk drive unit with the same

A slider and micro-actuator assembly of the present invention comprises a substrate having a trailing edge and a leading edge opposite the trailing edge; a read/write transducer formed at the trailing edge of the substrate and a piezoelectric micro-actuator formed at the leading edge of the substrate. The piezoelectric micro-actuator connects with the leading edge of the substrate via two spaced insulation layers so as to form a space between the piezoelectric micro-actuator and the leading edge of the substrate, the substrate with the read/write transducer rotates against a center thereof when the piezoelectric micro-actuator is driven to generate a rotation torque to the substrate via the space. The structure of the slider and micro-actuator assembly prevents the read/write transducer from damaged and gets better operation performance when the piezoelectric micro-actuator is driven. The present invention also discloses a method for manufacturing a slider and micro-actuator assembly, a HGA with the slider and micro-actuator assembly and a disk drive unit having such HGA.

Slider and micro-actuator assembly, head gimbal assembly, and disk drive unit with the same

A suspension for a HGA includes a suspension flexure and an out rigger. The suspension flexure has a tongue region having a first flexure part in a tip portion thereof for mounting a trailing edge of a slider and a PZT mounting region for mounting PZT elements. One end of the out rigger is connected to the suspension flexure, and the other end of the out rigger has a rigger support portion which extends above the tongue region so as to support the leading edge of the slider. The structure of the out rigger is capable of stiffening the tongue region of the suspension flexure and, in turns, avoiding the deformation problem and the dimple separation problem during the manufacturing process or in vibration or shock events. The invention also discloses a HGA with the suspension, manufacturing methods of the HGA and a disk drive unit having such HGA.

Suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit with the same

A micro-actuator for use with an HGA and/or disk drive device (e.g., a small platform disk drive device) with the micro-actuator having a reduced mass suitable for improving shock performance, and/or methods of making the same are provided. In certain example embodiments, the micro-actuator may comprise a substantially U-shaped frame including a cavity capable of receiving a slider, with the frame including two side arms and a bottom support arm at least partially defining the cavity. The bottom support arm may have a reduced mass capable of providing improved shock performance and capable of conveying a high resonance frequency response at a low gain. The bottom support arm may be, for example, substantially rectangle shaped, substantially I-shaped, toothed, etc. Also, the bottom support arm may be less thick than the side arms.

Growing community of inventors

Dongguan, China

Lin Guo