US4996629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit board with self-supporting connection between sides
Assignee: International Business Machines Corp
•
Filing: 1988-11-14
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Granted: 1991-02-26
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Expires: 2008-11-14
Abstract
Abstract A copper supporting sheet (5) has holes (9) for connecting semiconductor chips (3) to surface mount components (27). A laminate of polyimide (7) has holes (13) corresponding to the supporting layer holes (9) with copper 15 covering those holes (13). In addition to crossing those holes (13), the copper 15 forms conventional circuit patterns. The side having circuit patterns is populated by surface mount techniques with components (27). The opposite side has silicon chips (3) attached to the copper sheet (5) adjacent to holes (9). Wires (17) are ultrasonically bonded to the chips (3) and extended to the inside of the holes (13) in the polyimide layer (7), where they are ultrasonically bonded to copper (15). Crossover connection of the circuit patterns (17a) are achieved using the same technique. The circuit board is densely populated and cost-effective, with good heat dissipation characteristics.
Inventors
- 👤 Robert A. Christiansen
- 👤 Joel A. DiGirolamo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:37
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/11; H05K1/111; H05K1/112; H05K1/0201; H05K1/0203; H05K3/00; H05K3/22; H05K3/222; H05K3/30; H05K3/32; H05K3/328; H10; H10W; H10W90/00; H05K1/03; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0154; H05K2201/03; H05K2201/0332; H05K2201/0388; H05K2201/0394; H05K2201/09; H05K2201/09209; H05K2201/09372; H05K2201/09472; H05K2201/095; H05K2201/096; H05K2201/10; H05K2201/10227; H05K2201/10363; H05K2201/10431; H05K2201/10439; H05K2201/10477; H05K2201/10553; H05K2203/00; H05K2203/02; H05K2203/0285; H05K2203/04; H05K2203/049; H10W44/00; H10W44/20; H10W44/203; H10W44/206; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/50; H10W72/531; H10W72/5363; H10W72/541; H10W72/547; H10W72/5475; H10W72/551; H10W72/552; H10W72/5524; H10W72/59; H10W72/90; H10W72/951; H10W72/952; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
103 words
A circuit board populated on opposite sides comprising a supporting layer having two sides and holes between said two sides, a conductive circuit pattern supported on one of said sides, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, circuit elements supported on the other of said sides and wires or other self-supporting conductors electrically connected to said circuit elements, extending through said holes, and bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 2
Dependent Claim
103 words
A circuit board populated on opposite sides comprising a supporting layer having two sides and holes between said two sides, a conductive circuit pattern supported on one of said sides, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, circuit elements supported on the other of said sides and wires or other self-supporting conductors electrically connected to said circuit elements, extending through said holes, and bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 3
Dependent Claim
37 words
A circuit board as in claim 1 in which said circuit elements comprise semiconductor chips bonded to said supporting layer and having terminals spaced from said bonded location, said wires or connectors being connected to said terminals.
Claim 4
Dependent Claim
26 words
A circuit board as in claim 2 in which further circuit elements are mounted on and electrically connected to said conductive circuit pattern by surface attachment.
Claim 5
Dependent Claim
77 words
A circuit board as in claim 3 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 6
Dependent Claim
77 words
A circuit board as in claim 2 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 7
Dependent Claim
26 words
A circuit board as in claim 1 in which further circuit elements are mounted on and electrically connected to said conductive circuit pattern by surface attachment.
Claim 8
Dependent Claim
77 words
A circuit board as in claim 6 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 9
Dependent Claim
77 words
A circuit board as in claim 1 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 10
Dependent Claim
121 words
A circuit board comprising a metal supporting layer having two sides, an electrically insulating layer on one of said sides, holes between said sides and extending through said insulting layer, circuit elements supported on the other of said sides, a conductive circuit pattern supported on said insulating layer separated from said metal layer by said insulating layer, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, and wires or other self-supporting conductors electrically connected to said circuit elements, extending through said holes, and bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 11
Dependent Claim
121 words
A circuit board comprising a metal supporting layer having two sides, an electrically insulating layer on one of said sides, holes between said sides and extending through said insulting layer, circuit elements supported on the other of said sides, a conductive circuit pattern supported on said insulating layer separated from said metal layer by said insulating layer, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, and wires or other self-supporting conductors electrically connected to said circuit elements, extending through said holes, and bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 12
Dependent Claim
35 words
A circuit board as in claim 9 in which said circuit elements comprise semiconductor chips bonded to said supporting layer and having terminals spaced from said bonded location, said wires being connected to said terminals.
Claim 13
Dependent Claim
30 words
A circuit board as in claim 10 in which said circuit elements are bonded to said supporting layer by electrically conductive adhesive, said chips being connected electrically to said adhesive.
Claim 14
Dependent Claim
25 words
A circuit board as in claim 11 in which further circuit elements are mounted on and electrically connected to said conductive pattern by surface attachment.
Claim 15
Dependent Claim
77 words
A circuit board as in claim 12 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 16
Dependent Claim
77 words
A circuit board as in claim 11 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 17
Dependent Claim
25 words
A circuit board as in claim 10 in which further circuit elements are mounted on and electrically connected to said conductive pattern by surface attachment.
Claim 18
Dependent Claim
77 words
A circuit board as in claim 15 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 19
Dependent Claim
77 words
A circuit board as in claim 10 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 20
Dependent Claim
25 words
A circuit board as in claim 9 in which further circuit elements are mounted on and electrically connected to said conductive pattern by surface attachment.
Claim 21
Dependent Claim
77 words
A circuit board as in claim 18 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 22
Dependent Claim
77 words
A circuit board as in claim 9 also comprising a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes, and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending post said bottom of said holes.
Claim 23
Dependent Claim
124 words
A circuit board populated on opposite sides comprising a supporting layer having two sides and holes between said two sides, a conductive circuit pattern supported on one of said sides, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, circuit elements supported on the other of said sides, and a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 24
Dependent Claim
124 words
A circuit board populated on opposite sides comprising a supporting layer having two sides and holes between said two sides, a conductive circuit pattern supported on one of said sides, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, circuit elements supported on the other of said sides, and a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes and being bonded to said conductive pattern on the side of said conductive pattern facing each of said two holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 25
Dependent Claim
139 words
A circuit board comprising a metal supporting layer having two sides, an electrically insulating layer on one of said sides, holes between said sides and extending through said insulating layer, circuit elements supported on the other of said sides, a conductive circuit pattern supported on said insulating layer separated from said metal layer by said insulating layer, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, and a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes and being bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
Claim 26
Dependent Claim
139 words
A circuit board comprising a metal supporting layer having two sides, an electrically insulating layer on one of said sides, holes between said sides and extending through said insulating layer, circuit elements supported on the other of said sides, a conductive circuit pattern supported on said insulating layer separated from said metal layer by said insulating layer, said conductive circuit pattern crossing said holes and defining a bottom of each of said holes, and a single wire or other self-supporting conductor electrically connecting two locations of said circuit pattern crossing two of said holes, said single wire or connector extending through each of said two holes and being bonded to said conductive pattern on the side of said conductive pattern facing said holes where said conductive pattern crosses said holes, and not extending past said bottom of said holes.
References Cited (Backward Citations)
US3296099A
Cited
GB1150530A
Cited
US3977074A
Cited
US3996416A
Cited
FR2524250A1
Cited
GB2135521A
Cited
GB2153595A
Cited
US4864471A
Cited
WO1988005428A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |