Patent US2192421A successfully refreshed from Google Patents.
US6160302A
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US
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Laser fusible link
Assignee: International Business Machines Corp
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Filing: 1998-08-31
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Granted: 2000-12-12
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Expires: 2018-08-31
Abstract
Abstract A structure (and method) for selectively making an electrical connection comprising a conductive element, wherein the conductive element becomes non-conductive after application of radiation energy, and a reflective element, positioned adjacent at least two sides of the conductive element for reflecting the radiation energy.
Inventors
- 👤 Anthony M. Palagonia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:53
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W20/49; H10W20/493; H10W20/494
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
46 words
An integrated circuit fuse structure for selectively making an electrical connection comprising: a conductive element, wherein said conductive element becomes non-conductive after application of radiation energy; and a metallic reflective element, positioned adjacent at least two sides of said conductive element for reflecting said radiation energy.
Claim 2
Dependent Claim
46 words
An integrated circuit fuse structure for selectively making an electrical connection comprising: a conductive element, wherein said conductive element becomes non-conductive after application of radiation energy; and a metallic reflective element, positioned adjacent at least two sides of said conductive element for reflecting said radiation energy.
Claim 3
Dependent Claim
21 words
The structure in claim 1, wherein said conductive element comprises a laser fusible link, wherein said radiation energy comprises laser light.
Claim 4
Dependent Claim
20 words
The structure in claim 1, wherein said reflective element substantially surrounds opposing sides and a bottom of said conductive element.
Claim 5
Dependent Claim
18 words
The structure in claim 1, wherein said reflective element is positioned around opposing sides of said conductive element.
Claim 6
Dependent Claim
29 words
The structure in claim 1, wherein said conductive element has a first melting point and said reflective element has a second melting point higher than said first melting point.
Claim 7
Dependent Claim
18 words
The structure in claim 1, wherein said conductive element comprises one of aluminum, an aluminum alloy and polysilicon.
Claim 8
Dependent Claim
26 words
The structure in claim 1, wherein said reflective element comprises one of silver, rhodium, gold, copper, platinum, tantalum, nickel, zirconium oxide, aluminum oxide, and aluminum oxide.
Claim 9
Dependent Claim
19 words
The structure in claim 1, further comprising an insulating layer positioned between said conductive element and said reflective element.
Claim 10
Dependent Claim
24 words
The structure in claim 8, wherein said insulating layer has a thickness equal to a whole multiple of a wavelength of said radiation energy.
Claim 11
Dependent Claim
67 words
A dynamic random access memory structure comprising: a main memory array; a conductive element electrically connected to said main memory array, wherein said conductive element becomes non-conductive after application of radiation energy; a redundant memory array selectively connected to said main memory array by said conductive element; and a metallic reflective element, positioned adjacent at least two sides of said conductive element for reflecting said radiation energy.
Claim 12
Dependent Claim
67 words
A dynamic random access memory structure comprising: a main memory array; a conductive element electrically connected to said main memory array, wherein said conductive element becomes non-conductive after application of radiation energy; a redundant memory array selectively connected to said main memory array by said conductive element; and a metallic reflective element, positioned adjacent at least two sides of said conductive element for reflecting said radiation energy.
Claim 13
Dependent Claim
25 words
The dynamic random access memory structure in claim 10, wherein said conductive element comprises a laser fusible link, wherein said radiation energy comprises laser light.
Claim 14
Dependent Claim
24 words
The dynamic random access memory structure in claim 10, wherein said reflective element substantially surrounds opposing sides and a bottom of said conductive element.
Claim 15
Dependent Claim
22 words
The dynamic random access memory structure in claim 10, wherein said reflective element is positioned around opposing sides of said conductive element.
Claim 16
Dependent Claim
33 words
The dynamic random access memory structure in claim 10, wherein said conductive element has a first melting point and said reflective element has a second melting point higher than said first melting point.
Claim 17
Dependent Claim
22 words
The dynamic random access memory structure in claim 10, wherein said conductive element comprises one of aluminum, an aluminum alloy and polysilicon.
Claim 18
Dependent Claim
30 words
The dynamic random access memory structure in claim 10, wherein said metallic reflective element comprises one of silver, rhodium, gold, copper, platinum, tantalum, nickel, zirconium oxide 84, and aluminum oxide.
Claim 19
Dependent Claim
23 words
The dynamic random access memory structure in claim 10, further comprising an insulating layer positioned between said conductive element and said reflective element.
Claim 20
Dependent Claim
28 words
The dynamic random access memory structure in claim 17, wherein said insulating layer has a thickness equal to a whole multiple of a wavelength of said radiation energy.
Claim 21
Independent Claim
60 words
A method of forming an integrated circuit fuse structure for selectively making an electrical connection comprising: forming a metallic reflective element and a conductive element on a substrate such that said reflective element is adjacent at least two sides of said conductive element, said conductive element becoming non-conductive after application of radiation energy, said reflective element reflecting said radiation energy.
Claim 22
Independent Claim
60 words
A method of forming an integrated circuit fuse structure for selectively making an electrical connection comprising: forming a metallic reflective element and a conductive element on a substrate such that said reflective element is adjacent at least two sides of said conductive element, said conductive element becoming non-conductive after application of radiation energy, said reflective element reflecting said radiation energy.
Claim 23
Dependent Claim
23 words
The method in claim 19, wherein said conductive element is formed as a laser fusible link, wherein said radiation energy comprises laser light.
Claim 24
Dependent Claim
23 words
The method in claim 19, wherein said reflective element is formed to substantially surround opposing sides and a bottom of said conductive element.
Claim 25
Dependent Claim
18 words
The method in claim 19, wherein said reflective element is formed around opposing sides of said conductive element.
Claim 26
Dependent Claim
35 words
The method in claim 19, wherein said conductive element is formed to have a first melting point and said reflective element is formed to have a second melting point higher than said first melting point.
Claim 27
Dependent Claim
19 words
The method in claim 19, further comprising forming an insulating layer between said conductive element and said reflective element.
Claim 28
Dependent Claim
27 words
The method in claim 24, wherein said insulating layer is formed to have a thickness equal to a whole multiple of a wavelength of said radiation energy.
Claim 29
Independent Claim
65 words
A method of selectively making an electrical connection in a dynamic random access memory structure comprising: forming a metallic reflective element and a conductive element on a substrate such that said reflective element is adjacent at least two sides of said conductive element; and selectively applying radiation energy to said conductive element to make said conductive element non-conductive, said reflective element reflecting said radiation energy.
Claim 30
Independent Claim
65 words
A method of selectively making an electrical connection in a dynamic random access memory structure comprising: forming a metallic reflective element and a conductive element on a substrate such that said reflective element is adjacent at least two sides of said conductive element; and selectively applying radiation energy to said conductive element to make said conductive element non-conductive, said reflective element reflecting said radiation energy.
Claim 31
Dependent Claim
23 words
The method in claim 26, wherein said conductive element is formed as a laser fusible link, wherein said radiation energy comprises laser light.
Claim 32
Dependent Claim
23 words
The method in claim 26, wherein said reflective element is formed to substantially surround opposing sides and a bottom of said conductive element.
Claim 33
Dependent Claim
18 words
The method in claim 26, wherein said reflective element is formed around opposing sides of said conductive element.
Claim 34
Dependent Claim
35 words
The method in claim 26, wherein said conductive element is formed to have a first melting point and said reflective element is formed to have a second melting point higher than said first melting point.
Claim 35
Dependent Claim
19 words
The method in claim 26, further comprising forming an insulating layer between said conductive element and said reflective element.
Claim 36
Dependent Claim
27 words
The method in claim 31, wherein said insulating layer is formed to have a thickness equal to a whole multiple of a wavelength of said radiation energy.
References Cited (Backward Citations)
US5747869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |