Patent US2765475A successfully refreshed from Google Patents.
US5777847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichip module having a cover wtih support pillar
Assignee: NEC Corp
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Filing: 1997-03-06
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Granted: 1998-07-07
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Expires: 2017-03-06
Abstract
Abstract A multichip module comprises a substrate mounting a plurality of circuit chips, a cover plate positioned over the circuit chips, and at least one pillar member for fixing the cover plate to the substrate to support it. The substrate has a plurality of circuit chips fixed in a predetermined pattern of locations on a side thereof. At least one pillar member fixes the cover plate to the substrate such that the cover plate is positioned over the circuit chips. Since the pillar member is fixed to the substrate at a small area to support the cover plate, the substrate can be prevented from deforming due to a temperature change. In order to secure the covering member, the pillar member is preferably fixed by means of an adhesive, a fit, or screwing.
Inventors
- 👤 Kenichi Tokuno
- 👤 Akihiro Dohya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:24
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/60; H10W40/00; H10W40/20; H10W40/22; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20; H10W72/851; H10W72/874; H10W72/877; H10W74/00; H10W74/10; H10W74/15; H10W90/00; H10W90/701; H10W90/721; H10W90/724; H10W90/731; H10W90/734; H10W90/736
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
100 words
A device comprising: a substrate having a plurality of circuit chips fixed in a predetermined pattern of locations on a side of said substrate, each of said circuit chips being electrically connected to electrodes of said substrate; a cover for covering said circuit chips, said cover comprising at least one plate element; and a fixing and supporting means located in a central location of said substrate for fixing said cover to said substrate at a predetermined level over said circuit chips and providing a sole support for said cover, wherein, said fixing and supporting means comprises at least one pillar.
Claim 2
Independent Claim
100 words
A device comprising: a substrate having a plurality of circuit chips fixed in a predetermined pattern of locations on a side of said substrate, each of said circuit chips being electrically connected to electrodes of said substrate; a cover for covering said circuit chips, said cover comprising at least one plate element; and a fixing and supporting means located in a central location of said substrate for fixing said cover to said substrate at a predetermined level over said circuit chips and providing a sole support for said cover, wherein, said fixing and supporting means comprises at least one pillar.
Claim 3
Dependent Claim
15 words
The device according to claim 1, wherein said cover is geometrically similar to said substrate.
Claim 4
Dependent Claim
11 words
The device according to claim 1, wherein said cover is circular.
Claim 5
Dependent Claim
20 words
The device according to claim 1, wherein said cover comprises a handling area at a central area of said cover.
Claim 6
Dependent Claim
25 words
The device according to claim 4, wherein said cover further comprises a plurality of openings in areas other than said central area of said cover.
Claim 7
Dependent Claim
13 words
The device according to claim 1, wherein said cover comprises a heat-releasing fin.
Claim 8
Dependent Claim
27 words
The device according to claim 1, wherein said cover comprises a plurality of plate elements which are arranged in parallel to each other and to said substrate.
Claim 9
Dependent Claim
16 words
The device according to claim 1, wherein said cover and said pillar are one integral piece.
Claim 10
Dependent Claim
25 words
The device according to claim 1, wherein a single pillar is placed at a center of said substrate and at a center of said cover.
Claim 11
Dependent Claim
29 words
The device according to claim 9, wherein said single pillar is placed at the center of gravity of said substrate and at the center of gravity of said cover.
Claim 12
Dependent Claim
23 words
The device according to claim 9, wherein said circuit chips are placed symmetrically about said single pillar on said side of said substrate.
Claim 13
Dependent Claim
28 words
The device according to claim 1, wherein a plurality of pillars are placed at a central area of said substrate and at a central area of said cover.
Claim 14
Dependent Claim
36 words
The device according to claim 12, wherein said central area of said substrate includes the center of gravity of said substrate and said central area of said cover includes the center of gravity of said cover.
Claim 15
Dependent Claim
46 words
The device according to claim 12, wherein a certain circuit chip of said circuit chips is placed at a center of said substrate and circuit chips other than said certain circuit chip are placed symmetrically about said certain circuit chip on said side of said substrate.
Claim 16
Dependent Claim
23 words
The device according to claim 14, wherein four pillars are placed symmetrically about said certain circuit chip on said side of said substrate.
Claim 17
Dependent Claim
20 words
The device according to claim 1, wherein an end of said pillar is fixed to said substrate by an adhesive.
Claim 18
Dependent Claim
44 words
The device according to claim 1, wherein said substrate further has at least one fixing hole on said side of said substrate and an end of said pillar is fixed to said substrate by inserting said end of said pillar into said fixing hole.
Claim 19
Dependent Claim
21 words
The device according to claim 9, wherein an end of said single pillar is fixed to said substrate by an adhesive.
Claim 20
Dependent Claim
45 words
The device according to claim 9, wherein said substrate further has at least one fixing hole on said side of said substrate and an end of said single pillar is fixed to said substrate by inserting said end of said pillar into said fixing hole.
Claim 21
Dependent Claim
56 words
The device according to claim 9, wherein: said substrate further has a single fixing threaded hole on said side of said substrate; said single pillar is provided with a threaded end; and said single pillar is fixed to said substrate by screwing said single pillar of said cover into said fixing threaded hole of said substrate.
Claim 22
Dependent Claim
11 words
The device according to claim 9, wherein said cover is circular.
Claim 23
Dependent Claim
11 words
The device according to claim 20, wherein said cover is circular.
Claim 24
Dependent Claim
21 words
The device according to claim 12, wherein an end of each said pillar is fixed to said substrate by an adhesive.
Claim 25
Dependent Claim
51 words
The device according to claim 12, wherein said substrate further has said plurality of fixing holes on said side of said substrate and an end of each said pillar is fixed to said substrate by inserting said end of each said pillar into each said fixing hole corresponding to said pillar.
Claim 26
Dependent Claim
11 words
The device according to claim 12, wherein said cover is circular.
Claim 27
Dependent Claim
41 words
The device according to claim 1, wherein said substrate comprises said electrodes and an insulator plate, said insulator comprising an insulating material selected from one of a glass epoxy resin, a phenol resin, a BT resin a polyimide, on glass ceramics.
Claim 28
Dependent Claim
21 words
The device according to claim 1, wherein said cover comprises a metallic material selected from aluminum, an aluminum alloy and copper.
Claim 29
Dependent Claim
13 words
The device according to claim 1, wherein said cover comprises a thermosetting resin.
Claim 30
Dependent Claim
21 words
The device according to claim 1, wherein said pillar comprises a metallic material selected from aluminum, an aluminum alloy and copper.
Claim 31
Dependent Claim
13 words
The device according to claim 1, wherein said pillar comprises a thermosetting resin.
Claim 32
Independent Claim
128 words
A device comprising: a substrate having a plurality of circuit chips fixed in a predetermined pattern of locations on a side of said substrate, each of said circuit chips being electrically connected to electrodes of said substrate; a heat conductive provided on each said circuit chip, said heat conductive having flexibility; a cover for cover said circuit chips, said cover comprising at least one plate element; and a fixing and supporting means located in a central location of said substrate for fixing said cover to said substrate at a predetermined level over said substrate and in contact with said heat conductive provided on each of said circuit chips and for providing a sole support for said cover, wherein, said fixing and supporting means comprises at least one pillar.
Claim 33
Independent Claim
128 words
A device comprising: a substrate having a plurality of circuit chips fixed in a predetermined pattern of locations on a side of said substrate, each of said circuit chips being electrically connected to electrodes of said substrate; a heat conductive provided on each said circuit chip, said heat conductive having flexibility; a cover for cover said circuit chips, said cover comprising at least one plate element; and a fixing and supporting means located in a central location of said substrate for fixing said cover to said substrate at a predetermined level over said substrate and in contact with said heat conductive provided on each of said circuit chips and for providing a sole support for said cover, wherein, said fixing and supporting means comprises at least one pillar.
Claim 34
Dependent Claim
15 words
The device according to claim 31, wherein said cover is geometrically similar to said substrate.
Claim 35
Dependent Claim
11 words
The device according to claim 31, wherein said cover is circular.
Claim 36
Dependent Claim
13 words
The device according to claim 31, wherein said cover comprises a heat-releasing fin.
Claim 37
Dependent Claim
23 words
The device according to claim 31, wherein said cover comprises a plurality of plate elements which are arranged in parallel at predetermined intervals.
Claim 38
Dependent Claim
25 words
The device according to claim 31, wherein a single pillar is placed at a center of said substrate and at a center of said cover.
Claim 39
Dependent Claim
23 words
The device according to claim 36, wherein said circuit chips are placed symmetrically about said single pillar on said side of said substrate.
Claim 40
Dependent Claim
28 words
The device according to claim 31, wherein a plurality of pillars are placed at a central area of said substrate and at a central area of said cover.
Claim 41
Dependent Claim
46 words
The device according to claim 38, wherein a certain circuit chip of said circuit chips is placed at a center of said substrate and circuit chips other than said certain circuit chip are placed symmetrically about said certain circuit chip on said side of said substrate.
Claim 42
Dependent Claim
23 words
The device according to claim 39, wherein four pillars are placed symmetrically about said certain circuit chip on said side of said substrate.
Claim 43
Dependent Claim
20 words
The device according to claim 31, wherein an end of said pillar is fixed to said substrate by an adhesive.
Claim 44
Dependent Claim
44 words
The device according to claim 31, wherein said substrate further has at least one fixing hole on said side of said substrate and an end of said pillar is fixed to said substrate by inserting said end of said pillar into said fixing hole.
Claim 45
Dependent Claim
56 words
The device according to claim 36, wherein: said substrate further has a single fixing threaded hole on said side of said substrate; said single pillar is provided with a threaded end; and said single pillar is fixed to said substrate by screwing said single pillar of said cover into said fixing threaded hole of said substrate.
Claim 46
Dependent Claim
11 words
The device according to claim 31, wherein said cover is circular.
Claim 47
Dependent Claim
11 words
The device according to claim 43, wherein said cover is circular.
Claim 48
Dependent Claim
40 words
The device according to claim 31, further comprising a heat spreader which is a plate of material having a heat conductivity smaller than said heat conductive, said heat spreader being provided between said heat conductive and each said circuit chip.
Claim 49
Dependent Claim
51 words
The device according to claim 31, wherein said heat conductive comprises a resin containing a filler with a high heat conductivity, said filler comprising a material selected from silver, alumina, diamond, silicon carbide and boron nitride, said resin comprising one of a silicone resin, a silver epoxy resin and silicon rubber.
Claim 50
Dependent Claim
26 words
The device according to claim 46, wherein said heat spreader comprises a metal selected from aluminum, an aluminum alloy, copper, a copper alloy, and copper tungsten.
Claim 51
Dependent Claim
13 words
The device according to claim 46, wherein said heat spreader comprises aluminum nitride.
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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) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |