Class / Patent application number | Description | Number of patent applications / Date published |
360234500 | Electrical attachment of slider/head | 34 |
20080212234 | Magnetic head slider - Embodiments of the present invention help to provide a flying height adjusting type magnetic head slider with reduced influence of a heater coil induction field. According to one embodiment, a magnetic head slider comprises a heater, a read element, and a write element, which are formed on a substrate. The heater is formed between a lower magnetic shield of the read element and the substrate by meandering a heater coil in direction Y going away from ABS. Magnetic fields by generated in direction Y orthogonal to a track width direction X of the lower magnetic field upon energization of the heater coil are offset each other, exerting no influence on the magnetized state in the track width direction X of the lower magnetic shield. A magnetic field hx induced in the track width direction X of the lower magnetic shield is coincident with the magnetizing direction of the lower magnetic shield, acting to maintain the magnetized state of the lower magnetic shield. | 09-04-2008 |
20080253025 | METHOD AND APPARATUS FOR PROVIDING AN ADDITIONAL GROUND PAD AND ELECTRIC AL CONNECTION FOR GROUNDING A MAGNETIC RECORDING HEAD - Method and apparatus are presented for electrically coupling a slider to ground. In one embodiment, a bonding pad is provided on a side of the slider body separate from the bonding pad(s) used for read/write signals. This separate bonding pad is electrically coupled within the slider body to components that are to be coupled to ground. A separate conductor provided on the suspension (e.g., a trace, a flex circuit, etc.) may be electrically coupled to the separate bonding pad via gold ball bonding. The conductor is also coupled to ground in the hard-disk drive device (e.g., via the preamplifier). The use of the separated bonding pad and trace may negate the need to use a conductive adhesive to electrically ground the slider via its attachment to the tongue of a slider. | 10-16-2008 |
20080273266 | INTEGRATED LEAD HEAD SUSPENSION WITH TAPERED TRACE SPACING - An integrated lead flexure for a disk drive head suspension, comprising two or more spaced-apart traces extending between terminal connector pads and head connector pads, wherein the spacing between the traces substantially continuously decreases along at least a portion of the length of the traces. | 11-06-2008 |
20080273267 | Slider with improved structure for adjusting flying height thereof and hard disk drive with the same - A slider has a slider substrate, a read sensor, a top shield and a bottom shield sandwiching the read sensor, and a write shield. The slider substrate is electrically connected to a substrate electrical connection which is adapted to provide a flying height control voltage to the slider substrate for realizing EFH control so that the bottom shield and the write shield both are electrically connected to a ground electrical connection to eliminate pits on shields of the slider as well as reduce electrostatic discharge (ESD) damage and noise during EFH operation. The slider also employs a bottom plate, a heater and a shunting circuit with shunting resistances to optimum reading and/or writing performance by further better preventing noise, cross-talk and ESD. The present invention also discloses a hard disk drive with the slider for adjusting the slider's flying height. | 11-06-2008 |
20090002888 | Overpass structure of flexible printed cable (FPC) signal lines with suspension signal lines for a hard disk drive - A printed circuit that connects a head to a pre-amplifier circuit of a hard disk drive. The head has a pair of write bond pads and a pair of read bond pads. The printed circuit has a pair of read traces located in a first layer and connected to the read bond pads. The printed circuit also has a pair of write traces that are located in a second layer and connected to the write bond pads. The write traces cross with the read traces so that a head fabricated from a single head wafer can be used as a Up head in a hard disk drive. | 01-01-2009 |
20090080111 | Bonded structure and method of making the same, head gimbal assembly, head stack assembly and disk drive unit using the same - The present bonded structure uses metal ball to bond or weld the respective bonding surfaces of electrical pads which are arranged to face the same direction. The structure can be controlled visually and thus enables a high connection quality of no short circuit. In addition, the bonding operation of the bonded structure is carried out without using pressure, thus it will not damage surroundings of the electrical components. Accordingly, the manufacture yield is significantly improved and the cost is prominently reduced. The present invention also discloses a bonding method and a head gimbal assembly and a head stack assembly and a drive unit using the bonded structure. | 03-26-2009 |
20090086374 | High density electrical interconnect assembly - An electrical connection assembly includes a body, an electrically insulative layer supported by the body, a first bond pad defined on the electrically insulative layer, a first electrical contact pad defined on the electrically insulative layer and electrically isolated from the first bond pad, a circuit located adjacent to the electrically insulative layer defining a second bond pad and a second electrical contact pad that are electrically isolated from each other, and an electrically conductive bonding material that electrically and mechanically links the first and second bond pads. After setting, the electrically conductive bonding material biases the first and second electrical contact pads against each other in order to create an electrical connection therebetween. | 04-02-2009 |
20090141401 | ELECTRICAL CONNECTION BETWEEN A SUSPENSION FLEXURE CABLE AND A HEAD STACK ASSEMBLY FLEXIBLE CIRCUIT - A method and apparatus for electrically coupling a slider to a controller circuit are disclosed. In one embodiment, a pre-amplifier with an integrated electrical connector (I-connector) may be connected via an electrical trace to a slider and via a head stack assembly flexible circuit to a control circuit. The pre-amplifier may have two parallel series of spring probe claws, two parallel series of contact pegs, two slots, or a slot and a rotary cam. | 06-04-2009 |
20090168247 | MAGNETIC HEAD WITH EMBEDDED SOLDER CONNECTION AND METHOD FOR MANUFACTURE THEREOF - A slider for magnetic data recording, the slider including a plurality of solder pads that are embedded into the head. The solder pads can be formed during the formation of read and/or write heads, and can each be contained within a cavity. These cavities can be photolithographically patterned so that they can be formed very close together. In addition, because the solder pads are contained within the cavities, they do not flow into one another as would standard solder balls so that the embedded solder balls can be spaced much more closely together than standard solder balls can, without the risk of shorting between solder pads. | 07-02-2009 |
20090195930 | MAGNETIC RECORDING SLIDER WITH FLEX SIDE PADS - A system according to one embodiment comprises a slider having an air bearing surface side and a flex side, the flex side being positioned on an opposite side of the slider as the air bearing surface side; electrical pads on the flex side of the slider; and a heating device in electrical communication with the electrical pads, where the heating device comprises a least one optical element A method according to one embodiment comprises positioning pads of a heating device towards pads on a slider; detecting an impedance in a circuit including the pads of the heating device; moving the heating device relative to the slider to minimize the impedance; and coupling the heating device to the slider. Additional systems and methods are provided. | 08-06-2009 |
20090290259 | MAGNETIC HEAD WITH DELAYED CONNECTION HEATER SHUNTING - A slider structure that allows a grounded heater element to be employed, while also allowing a decision of whether the slider is to be an “up” slider or a “down” slider to be made in a late stage in the formation of the slider. The slider includes electrical contact pads for making electrical connection with the heater element. The slider also includes a dedicated ground path formed on the slider body at a location that is removed from either of the first and second contact pads, ground path providing electrical connectivity to the slider body. At a late stage in the manufacture of the read and write head, a determination can be made as to which contact pad is to be a ground pad, and that pad can be electrically connected with the ground path. | 11-26-2009 |
20100079914 | SLIDER AND SUSPENSION COMPOSITE FIBER SOLDER JOINTS - Systems and methods for a slider and suspension assembly are discussed. The slider and suspension assembly comprises a slider, a suspension, and composite fiber solder. The composite fiber solder is coupled to the suspension and coupled to the slider. The composite fiber solder comprises a fiber, wherein the fiber is configured to increase a fracture resistance of the composite fiber solder compared to a solder without the fiber. | 04-01-2010 |
20100110590 | Suspension board with circuit - A suspension board with circuit includes a conductive pattern, including a slider arranged on a surface side of the suspension board with circuit and mounted with a magnetic head, the magnetic head being electrically connected with the conductive pattern; and a light emitting device arranged on the back surface side of the suspension board with circuit and electrically connected with the conductive pattern, in which the conductive pattern includes a first terminal provided on a surface of the suspension board with circuit and electrically connected with the magnetic head; and a second terminal provided on the back surface of the suspension board with circuit and electrically connected with the light emitting device. | 05-06-2010 |
20100246065 | Suspension with additional bonding pads, head gimbal assembly and disk drive unit with the same - A suspension for a head gimbal assembly comprises a flexure having a plurality of electrical traces formed thereon, a plurality of first bonding pads formed on a first surface of the flexure and at least one second bonding pad formed on a second surface of the flexure opposite the first surface. The first bonding pads and the at least one second bonding pad are electrically connected with the electrical traces and adapted to electrically connect to a slider of the head gimbal assembly. The invention also discloses a head gimbal assembly and a disk drive unit with the same. | 09-30-2010 |
20100321829 | SLIDER BOND PAD WITH A RECESSED CHANNEL - A slider includes a slider body and a bond pad. The bond pad is positioned on the slider body and has a bonding surface with a recessed channel for directing solder flow. | 12-23-2010 |
20110019310 | Head gimbal assembly, suspension for the head gimbal assembly, and disk drive unit with the same - A HGA comprises a slider and a suspension with a flexure having a tongue region for supporting the slider. A read/write transducer and a piezoelectric element are formed oppositely. The connecting points of the curve beams and the inner tongue of the tongue region are in mirror positions to a center point of the inner tongue, and the connecting points of each curve beam are located at opposite sides of a center axis of the flexure. The slider has multiple electrical pads electrically connecting with the read/write transducer. The inner tongue has multiple electrical pads. The flexure has multiple inner leads electrically connected with the electrical pads of the inner tongue formed on the curve beams. The structure of the HGA prevents the read/write transducer from damaged and cause the manufacture of the HGA simpler. The present invention also discloses a suspension and a disk drive unit. | 01-27-2011 |
20110019311 | TOP BOND DESIGN FOR PERFORMANCE ENHANCEMENT - An assembly includes a slider having an air bearing surface and a slider mounting surface opposite the air bearing surface. The slider mounting surface includes first, second, third, and fourth slider pads. A first slider trace electrically shorts the first slider pad with the third slider pad. A second slider trace electrically shorts the second slider pad with the fourth slider pad. A transducing head is supported by the slider. The transducing head includes a positive terminal electrically connected to the first slider pad and a negative terminal electrically connected to the second slider pad. The first, second, third, and fourth slider pads can be connected to pads on a connection circuit with interleaved traces. | 01-27-2011 |
20110109996 | MANUFACTURING METHOD FOR A HEAD-STACK ASSEMBLY, APPARATUS FOR INTERCONNECTION OF THE HEAD-STACK ASSEMBLY, AND HEAD-STACK ASSEMBLY - A manufacturing method for a head-stack assembly. The method includes preparing a head-stack assembly. The method further includes placing a connection pad forming surface of a connector tab formed on an end of the trace so as to be positioned opposite to an edge of a circuit board; sliding an elastic component along a backside of the connection pad forming surface; and, stopping the elastic component on the backside and pressing the backside with the elastic component so as to press the connection pad forming surface against the edge. In addition, the method includes metal joining the connector tab and a connection pad of the circuit board by applying heat to a connection pad of the connector tab and the connection pad on the circuit board while pressing the connection pad forming surface against the edge with the elastic component; and, removing the elastic component after the metal joining. | 05-12-2011 |
20120008237 | WIDE-BANDWIDTH DIELECTRIC WINDOWING FOR CONDUCTOR SUSPENSION STRUCTURE - Approaches for a hard-disk drive suspension interconnect having a wide bandwidth. A suspension interconnect includes a substrate layer, a dielectric layer disposed on the substrate layer, and a plurality of transmission-line (TL) conductors disposed within the dielectric layer. Air gaps may be disposed around the TL conductors to minimize the tendency of the dielectric material to act as an electrical shunt, which impedes high bandwidth signal transmission. An air gap may exist in the dielectric layer between adjacent TL conductors. Additionally, the area adjacent to the plurality of TL conductors, along the direction of signal travel, may alternate between dielectric material and air gaps. Indeed, there need not be any solid material enclosing the TL conductors save for a plurality of dielectric cross ties that provide structural support thereto. The substrate layer may also comprise one or more air gaps underneath a portion of the plurality of TL conductors. | 01-12-2012 |
20120087041 | Suspension board with circuit - A suspension board with circuit includes a conductive region in which a conductive layer is formed and a mounting region for mounting a slider on which a magnetic head that is electrically connected to the conductive layer is mounted. The mounting region mounts the slider so that the slider is capable of relatively moving with respect to the conductive region, and the conductive region includes an opposing region that is opposed to the slider in the thickness direction at the time of the relative movement of the slider with respect to the conductive region and a damage preventing portion for preventing damage to the opposing region by the slider. | 04-12-2012 |
20120281315 | METHOD AND APPARATUS FOR PROCESSING SLIDERS FOR DISK DRIVES, AND TO VARIOUS PROCESSING MEDIA FOR THE SAME - A method and apparatus for processing sliders for a disk drives. The apparatus includes at least one gimbal structure adapted to engage at least one slider. The gimbal structure permits the slider to move in at least pitch and roll. A processing media is positioning opposite a surface on the least one slider to be processed. A preload mechanism biases the slider toward the processing media. One or more fluid bearing features are provided on at least one of the slider or the processing media configured to generate aerodynamic lift forces at an interface of the processing media with the surface of the slider during movement of the processing media relative to the slider. Various processing media are also disclosed. | 11-08-2012 |
20130033785 | SUSPENSION, HEAD GIMBAL ASSEMBLY AND DISK DRIVE UNIT WITH THE SAME - A suspension for a head gimbal assembly includes a flexure having a laminated structure including a substrate layer, an insulating layer formed on the substrate layer, and a conducting layer formed on the insulating layer. And first bonding pads are formed on the conducting layer at a first surface of the flexure, so as to electrically connect with a slider via solder balls, and second bonding pads are formed on the substrate layer at a second surface of the flexure opposite to the first surface, so as to electrically connect with extra components formed at the second surface via solder balls. The suspension can connect slider and other extra components at two opposite surfaces of the flexure with a simplified and compacted structure and a reduced cost. | 02-07-2013 |
20130258527 | MAGNETIC HEAD AND MAGNETIC RECORDING APPARATUS - A magnetic head includes a microwave-generating element connected to a ground line. The ground line is made shorter by connecting the ground line to a conductive slider substrate so that the microwave-generating element is in a short-circuited end condition. This allows a microwave excitation current to be efficiently supplied to the microwave-generating-element, thus enabling effective microwave-assisted recording. | 10-03-2013 |
20140063658 | HIGH FREQUENCY MAGNETIC FIELD ASSISTED MAGNETIC RECORDING HEAD - To uniformly determine the positional relationship between a main magnetic pole and a spin torque oscillator while independently optimizing the main magnetic pole and the spin torque oscillator. On a trailing end surface of a main magnetic pole, a step is provided at the boundary between the main magnetic pole and a gap material disposed on both sides thereof, and a spin torque oscillator is formed on the step. The spin torque oscillator is effectively separated into two regions by utilizing the step. Further, a part of the spin torque oscillator is removed so as to disable the unwanted region, thereby realizing a self-alignment type high frequency magnetic field assisted magnetic recording head structure such that the positions of the end portions of the main magnetic pole and the spin torque oscillator are aligned. | 03-06-2014 |
20140139953 | DESIGN AND METHOD OF OPERATION OF MICRO-MILLIACTUATORS AND MICRO-MICROACTUATORS - A micro-milliactuator, a micro-microactuator, an actuator arm assembly, a hard disk drive and a method for operation of the hard disk are provided. In accordance with one aspect, the actuator arm assembly includes an arm, a slider for reading and writing information to disk media in response to read/write signals, and an actuator selected from the group comprising a micro-milliactuator and a micro-microactuator. The actuator has the slider mounted thereon and supports it above the disk media. The actuator includes one or more piezoelectric actuators for horizontally shifting the slider in response to actuator control signals. The actuator further includes one or more sensors physically coupled thereto for vibration sensing, compensation and suppression, the one or more sensors generating sensor signals in response to sensed vibrations during operation, wherein the actuator control signals are generated at least partially in response to the sensor signals. | 05-22-2014 |
20140198411 | MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY AND DISK DRIVE UNIT WITH THE SAME, AND MANUFACTURING METHOD THEREOF - A magnetic head includes a slider substrate having a trailing edge and multiple bonding pads arranged on the trailing edge in a row. Each of the bonding pads includes a seed layer adhered to the trailing edge and electrically connected with the slider substrate, a soldering layer formed on the seed layer and adapted for connecting with a suspension, and at least one solder nonwettable layer adhered to the trailing edge and connected with at least one side of the seed layer. The structure of the magnetic head is simple and stable, which can prevent the bonding pads bridging and shorting-circuit. An HGA and a disk drive unit with the same, a manufacturing method for the magnetic head are also disclosed. | 07-17-2014 |
20140240871 | INTERFACE VOLTAGE CONTROL OPERATING POINT DETERMINATION IN A HARD DISK DRIVE - Approaches for an interface voltage control (IVC) system in a hard-disk drive (HDD), whereby the IVC operating point determination scheme utilizes non-contact spacing signals for calibration of IVC. While applying a series of input voltages to a slider, head-disk spacing signals are monitored, such as spacing signals from an embedded contact sensor or Wallace spacing loss spacing signals. Based on the relation between the spacing signal values and the series of input voltages, the IVC operating point is identified and stored within the HDD. The IVC operating point corresponds to the IVC input voltage necessary to neutralize the natural slider-disk voltage potential that would otherwise cause an electrostatic force that pulls the slider closer to the disk and can cause lubrication transfer from disk to slider. | 08-28-2014 |
20140307349 | MAGNETIC RECORDING TRANSDUCERS HAVING SLIM SHAPED ADDITIONAL POLES - A magnetic transducer has an air-bearing surface (ABS). The magnetic transducer has a main pole, at least one coil for energizing the main pole and at least one additional pole. The main pole has a yoke and a pole tip having an ABS facing surface. The at least one additional pole is adjacent to the main pole in a down track direction. The additional pole is recessed from the ABS, has a front surface facing the ABS, has at least one side surface, and has at least one flare angle between the front surface and the at least one side surface. The at least one flare angle is measured from the ABS to the at least one side surface and is at least fifty degrees and less than ninety degrees. | 10-16-2014 |
20140368954 | DISK DRIVE SUSPENSION - In a first terminal portion, a first conductor, a terminal element as a first protection, and a first gold-plating layer are provided. The first terminal element is thicker than a base nickel layer of a slider terminal portion. The first gold-plating layer is provided with a first roughening processed portion. An electrically conductive paste contacts the roughening processed portion. In a second terminal portion, a second conductor, a terminal element as a second protection, and a second gold-plating layer are provided. The second terminal element is thicker than the base nickel layer. The second gold-plating layer is provided with a second roughening processed portion. An electrically conductive paste contacts the second roughening processed portion. | 12-18-2014 |
20150098151 | MAGNETIC READ HEAD WITH SEPARATELY ADDRESSABLE READ TRANSDUCERS - A read head with at least two separately addressable read transducers that are coplanar in a cross track direction. The read transducers have a cross track width, w | 04-09-2015 |
20150098152 | ELECTRICALLY INSULATING MAGNETIC MATERIAL FOR A READ HEAD - An apparatus such as a magnetic recording head with at least two separately addressable read transducers that are coplanar in a cross track direction. The apparatus includes first coplanar electrical contacts respectively disposed on and in electrical contact with first surfaces of the at least two read transducers and an electrically insulating magnetic material disposed between the electrical contacts. | 04-09-2015 |
20160099015 | MAGNETIC HEAD, MAGNETIC RECORDING AND REPRODUCING APPARATUS, AND METHOD OF MANUFACTURING MAGNETIC HEAD - A magnetic head according to an embodiment includes: a non-local spin valve element with three terminals including a nonmagnetic base layer, a first terminal including a first magnetic layer, a second terminal including a second magnetic layer, and a third terminal including a third magnetic layer; and a slider including a first external lead terminal connecting to the first terminal, a second external lead terminal connecting to the second terminal, and a third external lead terminal connecting to the third terminal, in an operation, a first current being caused to flow from the second external lead terminal to the third terminal via the second terminal and the nonmagnetic base layer, and a second current that is lower than the first current being caused to flow to the first terminal. | 04-07-2016 |
20160163343 | APPARATUS AND METHOD FOR SETTING SLIDER SURFACE POTENTIAL - An apparatus includes a slider body of a disk drive. The slider body is electrically coupled to a plurality of end bond pads. A voltage applied to one more of the end bond pads sets a surface potential of the slider body. | 06-09-2016 |
20190147908 | RECORDING HEAD GIMBAL ASSEMBLY PROGRAMMING BY SELECTIVE APPLICATION OF INTERCONNECTS | 05-16-2019 |