Read head having conductive filler in insulated hole through substrate

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8164858





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A novel read head includes a substrate having a trailing face and a leading face opposite the trailing face. The substrate includes a first hole therethrough that extends continuously from the trailing face to the leading face. The read head also includes a read transducer disposed on the trailing face, and a first plurality of electrically conductive trailing connection pads disposed on the trailing face. A first insulative layer is disposed on an inner surface of the first hole. A first electrically conductive filler is disposed in the first hole but is insulated from the substrate by the first insulative layer. A first electrically conductive leading connection pad is disposed on the leading face and is electrically connected to the first conductive filler.

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Patent Owner(s)

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International Classification(s)

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Inventor Name Address # of filed Patents Total Citations
I, Gusti Made Subrata Bangkok, TH 2 73
Moravec, Mark D Gilroy, US 18 614
Pumkrachang, Santi Bangkok, TH 2 73

Cited Art Landscape

Patent Info (Count) # Cites Year
Other [Check patent profile for assignment information] (1)
5200869 Flying type thin film magnetic head having a transducing element 17 1991
7006330 Head stack assembly including a ground conductive pad for grounding a slider to a gimbal 59 2003
7027264 Slider with a slider ground pad electrically connected to write head poles and read head shields 45 2003
7535676 Slider with bonding pads opposite the air bearing surface 6 2004
2006/0181,808 Compact thin-film magnetic head and magnetic disk drive using the same 3 2006
2007/0047,144 Magnetic head slider and suspension for magnetic head 6 2006
6757135 Leading edge bond pads 11 2001
7254885 Wafer-level fabrication method for top or side slider bond pads 3 2002
* 7929248 Top bond pad for transducing head interconnect 19 2006
6349017 Magnetic head suspension assembly using bonding pads of a slider to an attachment surface of a flexure 95 1997
* 5896248 Bond pads for metal welding of flexure to air bearing slider and grounding configuration thereof 45 1997
6125014 Via-less connection using interconnect traces between bond pads and a transducer coil of a magnetic head slider 46 1998
6796018 Method of forming a slider/suspension assembly 68 2001
6947258 UV curable and electrically conductive adhesive for bonding magnetic disk drive components 151 2002
5530604 Electrical connection and slider-suspension assembly having an improved electrical connection 54 1994
7307816 Flexure design and assembly process for attachment of slider using solder and laser reflow 42 2001
5068759 Thin film magnetic head of small size capable of certainly and stably connecting lead wires 25 1990
* 5124864 Magnetic head supporting device including a flexible member of polymeric resinous material 40 1990
* 5126901 Thin film magnetic head having a narrow upper surface 18 1990
* 5384432 Two-layered tape lead wire for magnetic head 26 1993
* 4761699 Slider-suspension assembly and method for attaching a slider to a suspension in a data recording disk file 170 1986
4789914 Thin film magnetic read-write head/arm assemblies 97 1986
* 5914834 Head suspension assembly with electrical interconnect by slider bond pads and gimbal bonding zones 53 1997
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
9343084 Systems and methods for correcting slider parallelism error using compensation lapping 0 2012
9387568 Systems and methods for correcting fabrication error in magnetic recording heads using magnetic write width measurements 0 2013
9242340 Method to stress relieve a magnetic recording head transducer utilizing ultrasonic cavitation 1 2013
9093102 Systems and methods for tuning seed layer hardness in components of magnetic recording systems 2 2013
8929180 Energy-assisted magnetic recording device having laser driving signal and magnetic write signal sharing same electrical conductor 1 2013
8976491 Disk drive head suspension distal non-op shock limiter with branched arms 1 2013
8797691 Disk drive head suspension with a single piezoelectric element adhered to rotary-actuated and non-actuated portions of a structural layer of a tongue of a laminated flexure 35 2013
9315008 Method and apparatus for aligning an illumination unit to a slider for a magnetic recording device 2 2013
9070387 Integrated heat-assisted magnetic recording head/laser assembly 3 2013
9293157 Automated active feedback slice and view milling of magnetic head cross-sections 1 2013
9135935 Customized head gimbal assembly bonding skew angle for adjusting two-dimensional magnetic recording reader alignment 0 2013
8934199 Disk drive head suspension tail with bond pad edge alignment features 5 2014
9064513 Disk drive suspension assembly with flexure having dual conductive layers with staggered traces 1 2014
9105282 Head gimbal assembly carrier with adjustable protective bar 3 2014
9230580 Suspension assembly having a microactuator grounded to a flexure 1 2014
9449631 Slider for magnetic recording system 0 2015
9171561 Assemblies and methods for slider electrical connection containing through circuit electrical connections 0 2014
Western Digitatl (Fremont), LLC (1)
9431037 Systems and methods for monitoring the power of a light source utilized in energy-assisted magnetic recording 2 2013
8756795 Method for manufacturing a read head having conductive filler in insulated hole through substrate 34 2012
8988830 Air bearing design to mitigate lube waterfall effect 1 2013
9099145 High contrast alignment marker 2 2014
9870788 Method of adjusting tilt using magnetic erase width feedback 0 2014
9361916 Electrical lapping guide for dimensional control of back side of heat assisted magnetic recording device 1 2014
9431044 Slider having shock and particle resistance 0 2014
9372078 Detecting thickness variation and quantitative depth utilizing scanning electron microscopy with a surface profiler 0 2014
9805748 System and method for providing a protective layer having a graded intermediate layer 0 2014
9685187 Bonding tool and method for high accuracy chip-to-chip bonding 0 2014
9165579 Air bearing area configuration for reducing flying height hump across a stroke 1 2014
9042048 Laser-ignited reactive HAMR bonding 4 2014
9257138 Slider assembly and method of manufacturing same 3 2014
9183859 HAMR writer pole length characterization 0 2014
9190089 Air bearing area configuration for contaminating particle removal 0 2014
9190090 Multi step lube blocking air bearing area configuration 0 2014
9202478 Method and structure for soldering a laser submount to a mounting face of a slider 2 2015
9171562 Patterned metal layer to control solder connection between laser and submount in a magnetic head 3 2015
9368139 Slider back side etching to increase shear strength between suspension and slider 3 2015
9659589 Free-standing reflector usable in heat assisted magnetic recording technology 0 2015
9659587 Magnetic head having a reader overcoat with DLC and a recessed writer overcoat without DLC 1 2015
* 9792933 Magnetic head, disk drive with the same and method of manufacturing magnetic head 0 2015
* Cited By Examiner

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