Quang Phuong Van Le

US Patent:

6804879, Oct 19, 2004

Filed:

Oct 23, 2002

Appl. No.:

10/279169

Inventors:

Richard D. Hsiao - San Jose CA
Quang Le - San Jose CA
Edward Hin Pong Lee - San Jose CA
Paul Phong Nguyen - San Jose CA
Son Van Nguyen - Los Gatos CA
Denny D. Tang - Saratoga CA
Bradley Douglas Webb - San Jose CA
Patrick Rush Webb - San Jose CA
Samuel Wei-san Yuan - Saratoga CA

Assignee:

Hitachi Global Storage Technologies Netherlands, B.V. - Amsterdam

International Classification:

G11B 5127

US Classification:

2960324, 2960323, 2960325, 2960316, 2960318, 216 22, 216 47, 216 48, 216 87, 360119, 360122, 360123

Abstract:

A method for producing a magnetic transducer with a inductive write head having a multilayer coil with a high aspect ratio and a short yoke is provided. A damascene process is used for two coil layers and a conventional process for the third coil layer. The process of the invention allows a seed layer for the coil to be deposited on the side walls of the trenches for the first and second coil layers. In one embodiment the seed layer for the coil is preceded by an adhesion layer.

US Patent:

6901653, Jun 7, 2005

Filed:

Apr 2, 2002

Appl. No.:

10/115414

Inventors:

Richard Hsiao - San Jose CA, US
Prakash Kasiraj - San Jose CA, US
Quang Le - San Jose CA, US
Paul Phong Nguyen - San Jose CA, US
Son Van Nguyen - Los Gatos CA, US
Denny D. Tang - Saratoga CA, US
Patrick Rush Webb - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B005/17

US Classification:

2960325, 2960323, 29606, 216 39, 216 47, 360123, 336200

Abstract:

A Damascene process is provided for manufacturing a coil structure for a magnetic head. During the manufacturing process, an insulating layer is initially deposited after which a photoresist layer is deposited. A silicon dielectric layer is then deposited on the photoresist layer. After masking the silicon dielectric layer, at least one channel is etched in the photoresist layer and the silicon dielectric layer. Then, a conductive seed layer is deposited in the at least one channel. The at least one channel is then ready to be filled with a conductive material and chemically/mechanically polished to define a coil structure.

US Patent:

6948231, Sep 27, 2005

Filed:

May 21, 2002

Appl. No.:

10/153333

Inventors:

Richard Hsiao - San Jose CA, US
Quang Le - San Jose CA, US
Paul P. Nguyen - San Jose CA, US
Son Van Nguyen - Los Gatos CA, US
Mustafa Pinarbasi - Morgan Hill CA, US
Patrick R. Webb - San Jose CA, US
Howard G. Zolla - San Jose CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B005/127
H04R031/00

US Classification:

2960325, 2960313, 2960314, 29606, 216 62, 216 65, 216 66, 360122, 360126, 360317, 427127, 427128, 451 5, 451 41

Abstract:

The present invention presents a method for fabricating coil elements for magnetic write heads. A coil pattern is formed on a substrate using photolithographic techniques. The substrate is etched using reactive ion etching, creating a coil-shaped trench in the substrate. Thin film seed layers are deposited using ion beam deposition. The substrate is electroplated with metal filling the trenches with metal. The substrate is chemical mechanical polished to remove excess metal and planarize the air bearing surface of the write head.

US Patent:

7002775, Feb 21, 2006

Filed:

Sep 30, 2003

Appl. No.:

10/676742

Inventors:

Yimin Hsu - Sunnyvale CA, US
Quang Le - San Jose CA, US
James Lamar Nix - Gilroy CA, US
Mason Lamar Williams - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 5/147

US Classification:

360125

Abstract:

An embodiment of the invention is a head for perpendicular recording that has a trailing shield and side shields that are connected to the return pole piece by two studs of ferromagnetic material. The studs extend parallel to the track direction and are located a sufficient distance away from the main pole piece to reduce the flux flow from the main pole piece to the studs. Optionally the studs can be recessed behind the air-bearing surface. The preferred embodiment of the invention is a magnetic transducer with separated read and write heads for perpendicular recording.

US Patent:

7009812, Mar 7, 2006

Filed:

Sep 29, 2003

Appl. No.:

10/675046

Inventors:

Yimin Hsu - Sunnyvale CA, US
Quang Le - San Jose CA, US
Hin Pong Edward Lee - San Jose CA, US
James Lamar Nix - Gilroy CA, US
Aron Pentek - San Jose CA, US
Kurt Rubin - San Jose CA, US
Neil Smith - San Jose CA, US
Nian Xiang Sun - Sunnyvale CA, US
Walter Eugene Weresin - San Jose CA, US
Mason Lamar Williams - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 5/147

US Classification:

360126

Abstract:

The invention is a magnetic transducer with separated read and write heads for perpendicular recording. The write head has a trailing shield that extends from the return pole piece toward the main pole piece to form the write gap at the air-bearing surface. One embodiment of the trailing shield is a two part structure with a pedestal and a much smaller tip that confronts the main pole piece at the gap. In one embodiment a sink of non-magnetic, electrically conductive material is disposed in the separation gap between the read head and the flux bearing pole piece. The sink is preferably made of copper and does not extend to the ABS.

US Patent:

7014530, Mar 21, 2006

Filed:

Sep 29, 2003

Appl. No.:

10/675043

Inventors:

Prakash Kasiraj - San Jose CA, US
Quang Le - San Jose CA, US
Huey Tzeng - San Jose CA, US
Xiao Z. Wu - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

B24B 49/00

US Classification:

451 8, 451 41

Abstract:

A slider is described with a resistive electro-lapping guide (ELG), which is aligned with a structure in the write head such as the throat height or trailing shield thickness and extends from the lapping region through the ABS and is connected to pads on the surface of the slider. In a second embodiment the ELG is disposed entirely in the section of the slider which will be removed by lapping. Another embodiment of the invention is a system for single slider lapping which simultaneously monitors the resistance of the read sensor or a read head ELG and at least one ELG that is aligned with a structure in the write head. A controller uses the resistance information to implement an algorithm which decides when lapping should be terminated.

US Patent:

7022248, Apr 4, 2006

Filed:

Aug 29, 2003

Appl. No.:

10/652878

Inventors:

Daniel Wayne Bedell - San Jose CA, US
Quang Le - San Jose CA, US
Edward Hin Pong Lee - San Jose CA, US
Son Van Nguyen - Los Gatos CA, US
Vladimir Nikitin - Campbell CA, US
Murali Ramasubramanian - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V.

International Classification:

B44C 1/22

US Classification:

216 22, 216 13, 216 17, 216 18, 216 88, 216 89, 2960301

Abstract:

A method for patterning a self-aligned coil using a damascene process is disclosed. Coil pockets are formed in a first insulation layer disposed over a first pole layer. A barrier/seed layer is deposited along walls of the coil pockets in the insulation layer. Copper is formed in the coil pockets and over the insulation layer. The copper is planarized down to the insulation layer. The self-aligned coil process packs more copper into the same coil pocket and relaxes the coil alignment tolerance. Protrusions are prevented because of the more efficient and uniform spacing of the coil to reduce heat buildup in the head during a write.

US Patent:

7024756, Apr 11, 2006

Filed:

Jul 30, 2003

Appl. No.:

10/631706

Inventors:

Quang Le - San Jose CA, US
Jui-lung Li - San Jose CA, US
Jeffrey S. Lille - Sunnyvale CA, US
Son Van Nguyen - Los Gatos CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands, B.V. - Amsterdam

International Classification:

G11B 5/187
B44C 1/22

US Classification:

2960312, 2960315, 2960316, 2960318, 216 22, 216 48, 216 52, 20419234, 2041922

Abstract:

The method of making a magnetic head assembly includes forming a second pole piece layer that is recessed from a head surface, forming a reactive ion etchable (RIEable) pole tip forming layer on the second pole piece layer, forming an adhesion/stop layer of tantalum (Ta) on the pole tip forming layer, forming a photoresist mask on the adhesion/stop layer with an opening for patterning the adhesion/stop layer and the pole tip forming layer with another opening, reactive ion etching (RIE) through the opening to form the other opening, forming the second pole piece pole tip in the other opening with a top which is above a top of the adhesion/stop layer and chemical mechanical polishing (CMP) the top of the second pole piece pole tip until the CMP contacts the adhesion/stop layer. The invention also includes the magnetic head made by such a process.

Address:

3830 Glengrove Way, San Jose, CA 95121

VIN:

4JGBB86E67A281516

Make:

MERCEDES-BENZ

Model:

M-CLASS

Year:

2007