Patent US5162971A successfully refreshed from Google Patents.
US5162971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-density circuit module and process for producing same
Assignee: Panasonic Holdings Corp
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Filing: 1990-03-19
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Granted: 1992-11-10
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Expires: 2010-03-19
Abstract
Abstract A high-density circuit module has a box shaped shielding case made from a plate blank which is bent to provide the shield case. A printed wiring board is placed on the bottom surface portion of the shielding case, and a plurality of electronic components are soldered to conductor lands of the printed wiring board. A plurality of externally connected leads are soldered to connection lands of the printed wiring board. A process for producing the high-density circuit module includes the steps of placing the printed wiring board on the blank, then soldering the electronic components and leads to the printed wiring board and then bending the blank to provide the shielding case. The plurality of externally connected leads are formed from a plurality of leads which are originally integrally connected to the bottom surface portion of the shielding case, by separating the plurality of leads form the bottom surface portion of the shielding case. A high-density circuit module having a small number of parts and a simple structure is easily manufactured.
Inventors
- 👤 Teruhiro Sato
- 👤 Tomio Wada
- 👤 Mikio Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:17
CPC Classifications
H; H10; H10W; H10W90/00; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H05K5/00; H05K5/0091; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0218; H05K1/03; H05K1/05; H05K2201/00; H05K2201/10; H05K2201/10227; H05K2201/1034; H05K2201/10371; H05K2201/10613; H05K2201/10742; H05K2201/10886; H05K2201/10924; H05K3/3447
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
155 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surface portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components each soldered to a respective conductor land of said printed wiring board; and a plurality of leads integrally connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, at least some of said plurality of leads being soldered to a respective connection land of said printed wiring board, said at least some of said plurality of leads being separable from said bottom surface portion to provide a plurality of external connection leads.
Claim 2
Dependent Claim
155 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surface portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components each soldered to a respective conductor land of said printed wiring board; and a plurality of leads integrally connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, at least some of said plurality of leads being soldered to a respective connection land of said printed wiring board, said at least some of said plurality of leads being separable from said bottom surface portion to provide a plurality of external connection leads.
Claim 3
Dependent Claim
34 words
A high-density circuit module as recited in claim 1, wherein a raised portion formed by bending a part of the shielding plate blank is soldered to a grounding land of said printed wiring board.
Claim 4
Dependent Claim
39 words
A high-density circuit module as recited in claim 1, wherein a raised portion formed by bending a part of said side surface portions of the shielding plate blank is soldered to a grounding land of the printed wiring board.
Claim 5
Dependent Claim
166 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to an disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a raised portion formed by bending a part of the bottom portion of the shielding plate blank passes through a hole in said printed wiring board and the front end of the raised portion is soldered to a grounding land of said printed wiring board.
Claim 6
Dependent Claim
166 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to an disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a raised portion formed by bending a part of the bottom portion of the shielding plate blank passes through a hole in said printed wiring board and the front end of the raised portion is soldered to a grounding land of said printed wiring board.
Claim 7
Dependent Claim
52 words
A high-density circuit module as recited in claim 1, wherein at least one of said plurality of leads is integral with the bottom surface portion of the shielding plate blank and is non-separable from said bottom surface portion, said at least one lead being adapted to be applied to a grounding terminal.
Claim 8
Dependent Claim
153 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a substantially L-shaped front end of the externally connected leads passes through a small hole in said printed wiring board and is soldered to a connection land of said printed wiring board.
Claim 9
Dependent Claim
153 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a substantially L-shaped front end of the externally connected leads passes through a small hole in said printed wiring board and is soldered to a connection land of said printed wiring board.
Claim 10
Dependent Claim
171 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a substantially L-shaped front end of the externally connected leads which has passed through a small hole in said printed wiring board is further bend essentially in a U-shape and a leading branch of the resulting U-shaped front end is soldered to a connection land of said printed wiring board.
Claim 11
Dependent Claim
171 words
A high-density circuit module, comprising: a box shaped shielding case including a bottom surface portion, a top surface portion and four side surfce portions and formed by bending a metal shielding plate blank including at least said bottom surface portion and at least two of said side surface portions integrally adjoining said bottom surface portion; a printed wiring board placed on the bottom surface portion of said shielding case; a plurality of electronic components soldered to a conductor land of said printed wiring board; and a plurality of externally connected leads soldered to a connection land of said printed wiring board connected to and disposed substantially in a same plane as one of said surface portions of said shielding case, wherein a substantially L-shaped front end of the externally connected leads which has passed through a small hole in said printed wiring board is further bend essentially in a U-shape and a leading branch of the resulting U-shaped front end is soldered to a connection land of said printed wiring board.
Claim 12
Dependent Claim
67 words
A high-density circuit module as recited in claim 1, wherein a slit is formed in each of the joints between at least said bottom surface portion and two side surface portions of the shielding plate blank in a boxshaped case including the bottom surface portions, the top surface portion and four side surface portions, and said shielding case is provided by bending the joints having the slits.
Claim 13
Dependent Claim
51 words
A high-density circuit module as recited in claim 1, wherein the shielding plate blank further includes a top surface portion and two side surface portions and said bottom surface portion, said top portion and four side surface portions of the shielding plate blank being integrally adjoined to provide said shielding case.
References Cited (Backward Citations)
DE2909524A1
Cited
US4404617A
Cited
US4628412A
Cited
US4649461A
Cited
GB2165399A
Cited
US4725920A
Cited
DE3604730A1
Cited
JPS6424497A
Cited
JPS6424496A
Cited
US4912604A
Cited
JPH0250400A
Cited
JPH0273693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |