US5523260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for heatsinking a controlled collapse chip connection device
Assignee: Motorola Solutions Inc
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Filing: 1995-05-05
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Granted: 1996-06-04
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Expires: 2015-05-05
Abstract
Abstract A controlled collapse chip connection device can be heat sinked in the following manner. A carbon composition heat sink (102) having a thermal expansion coefficient substantially equal to a thermal expansion coefficient of the controlled collapse connection chip device (101) is positioned in a proximate location to a fabricated thermal mating area (104) of the controlled collapse chip connection device (101). The carbon composition heat sink (102) is then thermally bonded to the thermal mating area (104) of the controlled collapse connection chip device (101).
Inventors
- 👤 Carl Missele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:51
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/22; H10W40/25; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20; H10W72/851; H10W72/874; H10W72/877
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A method for heat sinking a controlled collapse chip connection device, the method comprising the steps of: a) fabricating a thermal mating area on the controlled collapse chip connection device; b) combining graphite and an organic compound to produce a graphite composite heat sink that has a thermal expansion coefficient that substantially matches a thermal expansion coefficient of the controlled collapse chip connection device; c) positioning the graphite composite heat sink in a proximate location to the thermal mating area of the controlled collapse chip connection device; and d) thermally bonding the graphite composite heat sink to the thermal mating area.
Claim 2
Independent Claim
101 words
A method for heat sinking a controlled collapse chip connection device, the method comprising the steps of: a) fabricating a thermal mating area on the controlled collapse chip connection device; b) combining graphite and an organic compound to produce a graphite composite heat sink that has a thermal expansion coefficient that substantially matches a thermal expansion coefficient of the controlled collapse chip connection device; c) positioning the graphite composite heat sink in a proximate location to the thermal mating area of the controlled collapse chip connection device; and d) thermally bonding the graphite composite heat sink to the thermal mating area.
Claim 3
Dependent Claim
22 words
The method of claim 1, wherein step (a) further comprises the step of fabricating the thermal mating area in a solderable pattern.
Claim 4
Dependent Claim
33 words
The method of claim 2, further comprising the step of matching the solderable pattern of the thermal mating area with a solderable pattern of the graphite heat sink to produce matched solderable patterns.
Claim 5
Dependent Claim
25 words
The method of claim 3, further comprising the step of soldering the graphite heat sink to the thermal mating area via the matched solderable patterns.
Claim 6
Dependent Claim
33 words
The method of claim 1, wherein the thermal bonding of step (d) further comprises the step of using an epoxy composition to thermally bond the graphite heat sink to the thermal mating area.
Claim 7
Dependent Claim
13 words
The method of claim 1, wherein the organic compound is polystyrene or phenolic.
Claim 8
Dependent Claim
27 words
The method of claim 1, wherein step (b) comprises the step of vacuum filling the graphite with the organic compound to produce the graphite composite heat sink.
Claim 9
Dependent Claim
16 words
The method of claim 1, wherein the controlled collapse chip connection device comprises a silicon composition.
Claim 10
Dependent Claim
17 words
The method of claim 1, wherein the controlled collapse chip connection device comprises a gallium arsenide composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-04 | 1999-12-04 | 2000-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-04 | 2003-12-04 | 2004-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-04 | 2007-12-04 | 2008-06-04 | $7700.00 | Window Closed / Lapsed |