Yining Hu from 34299 Quartz Ter, Fremont, CA 94555, age 58, Phone: (510)9826188

Us Patents

Masking Frame Plating Method For Forming Masking Frame Plated Layer
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US Patent:

6627390, Sep 30, 2003
Filed:

Jun 28, 2001
Appl. No.:

09/893225
Inventors:

Xue Hua Wu - Union City CA
Yi-Chun Liu - Fremont CA
Yining Hu - Fremont CA
Kochan Ju - Fremont CA
Assignee:

Headway Technologies, Inc. - Milpitas CA
International Classification:

G03C 500
US Classification:

430320, 430313, 430314
Abstract:

A method for forming a plated layer. There is first provided a substrate. There is then formed over the substrate a masking frame employed for masking frame plating a masking frame plated layer within the masking frame, where the masking frame is fabricated to provide an overhang of an upper portion of the masking frame spaced further from the substrate with respect to a lower portion of the masking frame spaced closer to the substrate. Finally, there is then plated the masking frame plated layer within the masking frame. The method is useful for forming masking frame plated magnetic pole tip stack layers with enhanced planarity dimensional control within magnetic transducer elements.

Thin Film Recording Head With A Buried Coil Providing A Shortened Yoke And Improved Dimension Control
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US Patent:

7006327, Feb 28, 2006
Filed:

Feb 27, 2003
Appl. No.:

10/375539
Inventors:

Mohamad T. Krounbi - San Jose CA, US
Ming Zhao - Fremont CA, US
Yining Hu - Fremont CA, US
Jim Watterston - Carson City NV, US
Assignee:

Western Digital (Fremont), Inc. - Fremont CA
International Classification:

G11B 5/147
US Classification:

360126
Abstract:

A writer for magnetic recording heads. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover the sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between the coil elements and adjacent the trench walls and covering the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.

Method Of Fabricating A Write Element With A Reduced Yoke Length
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US Patent:

7238292, Jul 3, 2007
Filed:

Jul 30, 2004
Appl. No.:

10/909224
Inventors:

Li He - Fremont CA, US
Ming Zhao - Fremont CA, US
Yining Hu - Fremont CA, US
Assignee:

Western Digital (Fremont), Inc. - Fremont CA
International Classification:

B44C 1/00
G11B 5/127
US Classification:

216 22, 216 41, 216 49, 216 59, 216 67, 216 88, 2960303, 2960312, 20419234
Abstract:

A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invention provides forming an anti-reflective layer before forming a mask layer. During photolithography the anti-reflective layer suppresses undesirable reflections off of features, such as vertical sidewalls, that otherwise limit how closely to such features portions of the mask layer can be formed.

Write Element With Reduced Yoke Length For Ultra-High Density Writing
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US Patent:

7379269, May 27, 2008
Filed:

Jul 30, 2004
Appl. No.:

10/903140
Inventors:

Mohamad T. Krounbi - San Jose CA, US
Li He - Fremont CA, US
Ming Zhao - Fremont CA, US
Yining Hu - Fremont CA, US
Assignee:

Western Digital (Fremont), LLC - Fremont CA
International Classification:

G11B 5/147
US Classification:

360126
Abstract:

A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invention provides forming an anti-reflective layer before forming a mask layer. During photolithography the anti-reflective layer suppresses undesirable reflections off of features, such as vertical sidewalls, that otherwise limit how closely to such features portions of the mask layer can be formed.

Method Of Fabricating Thin Film Write Heads With A Shortened Yoke And Improved Dimension Control
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US Patent:

7386933, Jun 17, 2008
Filed:

Dec 6, 2005
Appl. No.:

11/295243
Inventors:

Mohamad T. Krounbi - San Jose CA, US
Ming Zhao - Fremont CA, US
Yining Hu - Fremont CA, US
Jim Watterston - Carson City NV, US
Assignee:

Western Digital (Fremont), LLC - Fremont CA
International Classification:

G11B 5/127
H04R 31/00
US Classification:

2960316, 2960313, 2960314, 2960315, 2960318, 216 65, 360122, 360317, 451 5, 451 41
Abstract:

A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between coil elements and adjacent trench walls and covemg the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.

Method To Fabricate An Esd Resistant Tunneling Magnetoresistive Read Transducer
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US Patent:

7389577, Jun 24, 2008
Filed:

Jun 26, 2007
Appl. No.:

11/768883
Inventors:

Changhe Shang - Fremont CA, US
Yun-Fei Li - Fremont CA, US
Yining Hu - Fremont CA, US
Yong Shen - Saratoga CA, US
Assignee:

Western Digital (Fremont), LLC - Fremont CA
International Classification:

G11B 5/127
H04R 31/00
US Classification:

2960314, 2960311, 2960313, 3603241, 36032411, 36032412, 3603242, 427127, 427128
Abstract:

A method to fabricate a tunneling magnetoresistive (TMR) read transducer is disclosed. An insulative layer is deposited on a wafer substrate, and a bottom lead is deposited over the insulative layer. A laminated TMR layer, having a plurality of laminates, is deposited over the bottom lead. A TMR sensor having a stripe height is defined in the TMR layer, and a parallel resistor and first and second shunt resistors are also defined in the TMR layer. A top lead is deposited over the TMR sensor. The parallel resistor is electrically connected to the bottom lead and to the top lead. The first shunt resistor is electrically connected to the bottom lead and the wafer substrate, and the second shunt resistor is electrically connected to the top lead and the wafer substrate.

Write Element With Recessed Pole And Heat Sink Layer For Ultra-High Density Writing
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US Patent:

7522379, Apr 21, 2009
Filed:

Jul 30, 2004
Appl. No.:

10/909226
Inventors:

Mohamad T. Krounbi - San Jose CA, US
Yining Hu - Fremont CA, US
Ming Zhao - Fremont CA, US
Kenneth Kung - Saratoga CA, US
Mark D. Thomas - Hollister CA, US
Kroum S. Stoev - Pleasanton CA, US
Francis H. Liu - Fremont CA, US
Marcos M. Lederman - San Francisco CA, US
Assignee:

Western Digital (Fremont), LLC - Fremont CA
International Classification:

G11B 5/147
US Classification:

3601252
Abstract:

A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invention provides forming an anti-reflective layer before forming a mask layer. During photolithography the anti-reflective layer suppresses undesirable reflections off of features, such as vertical sidewalls, that otherwise limit how closely to such features portions of the mask layer can be formed.

Method For Manufacturing A Perpendicular Magnetic Recording Transducer
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US Patent:

7552523, Jun 30, 2009
Filed:

Jul 1, 2005
Appl. No.:

11/172778
Inventors:

Li He - Fremont CA, US
Jun Liu - San Ramon CA, US
Danning Yang - Fremont CA, US
Yining Hu - Fremont CA, US
Assignee:

Western Digital (Fremont), LLC - Fremont CA
International Classification:

G11B 5/127
H04R 31/00
US Classification:

2960316, 2960313, 2960314, 2960315, 2960318, 216 62, 216 66, 216 67, 360122, 360317, 451 5, 451 41
Abstract:

A method and system for manufacturing a perpendicular magnetic recording transducer by a process that includes plating is described. The method and system include forming a chemical mechanical planarization (CMP) uniformity structure around a perpendicular magnetic recording pole. The CMP uniformity structure has a height substantially equal to a desired pole height. The method and system also include fabricating an insulator on the CMP uniformity structure and performing a CMP to remove a portion of the insulator. The CMP exposes a portion of the perpendicular magnetic recording pole and planarizes an exposed surface of the perpendicular magnetic recording transducer.

Founder And Chief Executive Officer

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Location:

34299 Quartz Ter, Fremont, CA 94555

Industry:

Electrical/Electronic Manufacturing

Work:

Heidstar
Founder and Chief Executive Officer
Advantools Dec 2006 - Jun 2009
Chief Operations Officer
Western Digital Jun 2000 - Nov 2006
Senior Manager

Education:

Case Western Reserve University 1992 - 1997
Doctorates, Doctor of Philosophy, Chemistry Peking University 1985 - 1989
Bachelors, Bachelor of Science, Chemistry

Skills:

R&D
Thin Films
Semiconductors
Product Development
Design of Experiments
Materials Science
Precision Stages
Motion Control

Languages:

Mandarin