US5091771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact package for electronic module
Assignee: Maxim Integrated Products Inc
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Filing: 1989-05-15
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Granted: 1992-02-25
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Expires: 2009-05-15
Abstract
Abstract A very compact package for an electronic data module, which includes battery-backed memory. A two-part metal container is used, which has two shallow concave pieces which fit together. The integrated circuit (in a low-height package, such as a flat-pack or SOIC) is mounted on a very small flexible printed circuit board, which fits inside the container. Laterally spaced from the integrated circuit, on the other end of the small flexible board, the board end is sandwiched between a battery and a piece of elastic conductive material (such as conductive plastic foam). Thus, the battery is connected between one face of the container and a power conductor on the board. The piece of elastic conductive material makes contact between a data trace on the board and the other face of the container. Another trace on the board makes contact directly to the container face on which the battery's ground terminal is connected. Thus, simple wiring on the small board, using through-hole vias, suffices to route power, ground, and data lines to the integrated circuit, while providing a sealed durable package with two external contacts.
Inventors
- 👤 Michale L. Bolan
- 👤 Robert D. Lee
- 👤 James P. Manitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:25
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/20; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/0383; G06F3/048; G06F3/0487; G06F3/0489; G06F3/04897; G06K; G06K19/00; G06K19/04; G06K19/041; G06K19/047; G06K19/06; G06K19/067; G06K19/07; G06K19/0701; G06K19/0702; G06K19/0706; G06K19/077; G06K19/07743; G06K7/00; G06K7/0013; G06K7/0021; G06K7/0086; G11C5/00; G11C5/06; G11C5/066; G11C7/00; G11C7/24; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K3/00; H05K3/30; H05K3/32; H05K3/325
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
194 words
An electronic module, comprising: a two-part metal container, comprising first and second shallow concave pieces, said first and second pieces being assembled together to define a closed cavity therebetween, said first and second pieces being electrically isolated from each other; a battery having first and second terminals, said battery being inside said cavity, said first terminal of said battery being in electrical contact with said first piece of said container; a printed circuit board, inside said cavity, said board including multiple conductive lines thereon, ones of said lines being electrically isolated from each other; an integrated circuit package, mounted on said board, said integrated circuit package having multiple leads, ones of said leads being electrically connected to respective ones of said lines; a first one of said lines on said board making electrical contact to said second terminal of said battery and to said integrated circuit; a second one of said lines on said board making electrical contact to said first piece of said container and to said integrated circuit; a third one of said lines on said board making electrical contact to said second piece of said container and to said integrated circuit.
Claim 2
Dependent Claim
194 words
An electronic module, comprising: a two-part metal container, comprising first and second shallow concave pieces, said first and second pieces being assembled together to define a closed cavity therebetween, said first and second pieces being electrically isolated from each other; a battery having first and second terminals, said battery being inside said cavity, said first terminal of said battery being in electrical contact with said first piece of said container; a printed circuit board, inside said cavity, said board including multiple conductive lines thereon, ones of said lines being electrically isolated from each other; an integrated circuit package, mounted on said board, said integrated circuit package having multiple leads, ones of said leads being electrically connected to respective ones of said lines; a first one of said lines on said board making electrical contact to said second terminal of said battery and to said integrated circuit; a second one of said lines on said board making electrical contact to said first piece of said container and to said integrated circuit; a third one of said lines on said board making electrical contact to said second piece of said container and to said integrated circuit.
Claim 3
Dependent Claim
16 words
The module of claim 1, wherein said metal container consists of only two of said parts.
Claim 4
Dependent Claim
12 words
The module of claim 1, wherein said circuit board is substantially rigid.
Claim 5
Dependent Claim
16 words
The module of claim 3, wherein said metal container consists of only two of said parts.
Claim 6
Dependent Claim
11 words
The module of claim 1, wherein said circuit board is flexible.
Claim 7
Dependent Claim
16 words
The module of claim 5, wherein said metal container consists of only two of said parts.
Claim 8
Dependent Claim
16 words
The module of claim 1, wherein said parts of said metal container consist of stainless steel.
Claim 9
Dependent Claim
16 words
The module of claim 7, wherein said metal container consists of only two of said parts.
Claim 10
Dependent Claim
23 words
The module of claim 1, wherein said parts of said metal container are swaged together and potted, to provide a durable hermetic seal.
Claim 11
Dependent Claim
16 words
The module of claim 9, wherein said metal container consists of only two of said parts.
Claim 12
Dependent Claim
152 words
An electronic module, comprising: a two-part metal container, comprising first and second shallow concave pieces, said first and second pieces being assembled together to define a closed cavity therebetween, said first and second pieces being electrically isolated from each other; a battery having first and second terminals, said battery being inside said cavity, said first terminal of said battery being in electrical contact with said first piece of said container; a printed circuit board, inside said cavity, said board including multiple conductive lines thereon, ones of said lines being electrically isolated from each other; an integrated circuit package, mounted on said board, said integrated circuit package having multiple leads, ones of said leads being electrically connected to respective ones of said lines; and a piece of elastic conductive material, positioned inside said metal container so that a portion of said circuit board is sandwiched between said battery and said elastic conductive material.
Claim 13
Dependent Claim
152 words
An electronic module, comprising: a two-part metal container, comprising first and second shallow concave pieces, said first and second pieces being assembled together to define a closed cavity therebetween, said first and second pieces being electrically isolated from each other; a battery having first and second terminals, said battery being inside said cavity, said first terminal of said battery being in electrical contact with said first piece of said container; a printed circuit board, inside said cavity, said board including multiple conductive lines thereon, ones of said lines being electrically isolated from each other; an integrated circuit package, mounted on said board, said integrated circuit package having multiple leads, ones of said leads being electrically connected to respective ones of said lines; and a piece of elastic conductive material, positioned inside said metal container so that a portion of said circuit board is sandwiched between said battery and said elastic conductive material.
Claim 14
Dependent Claim
16 words
The module of claim 11, wherein said metal container consists of only two of said parts.
Claim 15
Dependent Claim
12 words
The module of claim 11, wherein said circuit board is substantially rigid.
Claim 16
Dependent Claim
16 words
The module of claim 13, wherein said metal container consists of only two of said parts.
Claim 17
Dependent Claim
11 words
The module of claim 11, wherein said circuit board is flexible.
Claim 18
Dependent Claim
16 words
The module of claim 15, wherein said metal container consists of only two of said parts.
Claim 19
Dependent Claim
16 words
The module of claim 11, wherein said parts of said metal container consist of stainless steel.
Claim 20
Dependent Claim
16 words
The module of claim 17, wherein said metal container consists of only two of said parts.
Claim 21
Dependent Claim
23 words
The module of claim 11, wherein said parts of said metal container are swaged together and potted, to provide a durable hermetic seal.
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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) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |