Patent US5430567A successfully refreshed from Google Patents.
US5430567A
Expired / Lapsed
US
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Method of clocking integrated circuit chips
Assignee: International Business Machines Corp
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Filing: 1994-07-25
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Granted: 1995-07-04
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Expires: 2014-07-25
Abstract
Abstract A method of clocking integrated circuit chips. A pulsed laser striking an integrated circuit module substrate is diffused through the substrate and exits the opposite surface as diffused light pulses. An integrated circuit chip mounted on the top surface of the substrate has optical receivers. The optical receivers receive pulsed energy from the diffused light pulses, converting pulsed light to electrical pulses that clock the chip.
Inventors
- 👤 Robert R. Shaw
- 👤 David T.-M. Shen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:37
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/80; H04B10/801; G; G06; G06F; G06F1/00; G06F1/04; G06F1/10; G06F1/105
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
An integrated circuit assembly comprising: a substrate having at least one chip location on a side for mounting an integrated circuit chip; at least one integrated circuit chip having at least one optical receiver, said chip being mounted on said substrate in one said chip location; and a pulsed laser broadcasting pulses at said substrate and located at a predetermined distance from said substrate.
Claim 2
Dependent Claim
64 words
An integrated circuit assembly comprising: a substrate having at least one chip location on a side for mounting an integrated circuit chip; at least one integrated circuit chip having at least one optical receiver, said chip being mounted on said substrate in one said chip location; and a pulsed laser broadcasting pulses at said substrate and located at a predetermined distance from said substrate.
Claim 3
Dependent Claim
24 words
The integrated circuit arrangement of claim 1 wherein said pulsed laser is located on a side of said substrate opposite said chip mounting locations.
Claim 4
Dependent Claim
21 words
The integrated circuit arrangement assembly of claim 1 wherein said pulsed laser is broadcasting pulses at an edge of said substrate.
Claim 5
Dependent Claim
16 words
The integrated circuit arrangement of claim 1 wherein said predetermined distance is less than 1 cm.
Claim 6
Dependent Claim
18 words
The integrated circuit assembly of claim 1 wherein said substrate is comprised of Al 2 O 3 .
Claim 7
Dependent Claim
26 words
The integrated circuit assembly of claim 1 further comprising a plurality of light vias in said substrate, between said pulsed laser and said integrated circuit chips.
Claim 8
Dependent Claim
16 words
The integrated circuit assembly of claim 1 wherein said substrate is comprised of SiO 2 .
Claim 9
Dependent Claim
20 words
The integrated circuit assembly of claim 1 wherein said substrate is comprised of MgO - Al 2 O 3 .
Claim 10
Dependent Claim
14 words
The integrated circuit assembly of claim 1 wherein said substrate is comprised of MgO.
Claim 11
Dependent Claim
14 words
The integrated circuit assembly of claim 1 wherein said substrate is composed of mullite.
Claim 12
Dependent Claim
14 words
The integrated circuit assembly of claim 1 wherein said substrate is composed of cordierite.
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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) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |