US Patent No: 7,307,816
Number of patents in Portfolio can not be more than 2000
Flexure design and assembly process for attachment of slider using solder and laser reflow
Stats
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Dec 11, 2007
Issued date -
Dec 21, 2001
filing date -
10/026,152
serial no -
In Force
status
Importance
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Abstract
A slider/suspension design and assembly method include securing a slider to a suspension assembly for use in a magnetic disk drive data recording device. To this end, solder bumps are applied to a metalized backside surface of the slider, and are patterned and flown within a plurality of receptacles to form a rigid mechanical connection between the slider to the flexure, while also enabling the slider-suspension assembly to be separated without damage during the process. The slider/suspension assembly is initiated by forming a plurality of slider bars on a wafer, in such a manner that the trailing edge surfaces of the sliders form a front side of the wafer. A plurality of thin film read/write elements and a plurality of electrical contact pads are formed on the wafer front side. Slider bars are then diced from the wafer, and the slider backsides are metalized on the slider bars. A pattern of solder bumps is applied onto the metalized backsides of the slider bars, and the slider bars are then sliced to form individual sliders that are secured to corresponding flexures.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,530,604 Electrical connection and slider-suspension assembly having an improved electrical connection | 50 | 1994 | |
| 5,680,275 Adjustable solder bump spacer for slider-suspension attachment | 20 | 1996 | |
| 5,828,031 Head transducer to suspension lead termination by solder ball place/reflow | 38 | 1996 | |
| 5,781,379 Single beam flexure for a head gimbal assembly | 35 | 1997 | |
| 5,889,636 Electrical connection for slider/suspension assembly | 21 | 1997 | |
| 6,523,250 Method of attaching a slider with head transducer to a suspension | 8 | 2001 | |
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| 4,761,699 Slider-suspension assembly and method for attaching a slider to a suspension in a data recording disk file | 162 | 1986 | |
| 4,789,914 Thin film magnetic read-write head/arm assemblies | 88 | 1986 | |
| 5,699,212 Method of electrostatic discharge protection of magnetic heads in a magnetic storage system | 69 | 1996 | |
| 6,046,882 Solder balltape and method for making electrical connection between a head transducer and an electrical lead | 25 | 1996 | |
| 5,821,494 Method of electrical connection between head transducer and suspension by solder wire bumping at slider level and laser reflow | 31 | 1996 | |
| 6,539,609 Method of forming a head gimbal assembly | 11 | 2001 | |
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| 6,002,550 Magnetic head assembly with ball member for electrically connecting the slider member and the suspension member | 13 | 1997 | |
| 6,098,271 Method for assembling a magnetic disk drive with a relaying flexible printed circuit sheet | 12 | 1999 | |
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| 5,815,347 Information storage system having an improved planar head-suspension assembly | 13 | 1994 | |
| 5,734,524 Head suspension assembly supported by an air bearing surface | 29 | 1996 | |
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| 5,126,901 Thin film magnetic head having a narrow upper surface | 15 | 1990 | |
| 6,198,599 Magnetic head with bonded balls having a capillary mark | 9 | 1999 | |
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| 5,327,310 Thin film contact recording head | 36 | 1992 | |
| 5,896,248 Bond pads for metal welding of flexure to air bearing slider and grounding configuration thereof | 36 | 1997 | |
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| 6,188,546 Method of electrically connecting a magnetic head, a magnetic head body and a magnetic disc apparatus | 20 | 1997 | |
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| 5,177,860 Manufacturing method of magnetic head | 17 | 1991 | |
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| 5,737,837 Manufacturing method for magnetic head junction board | 22 | 1996 | |
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| 6,351,353 Interconnect designs for micromotor, magnetic recording head and suspension assemblies | 36 | 1999 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 11, 2015 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 11, 2019 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |