US4042950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum silicide fuse links for integrated circuit devices
Assignee: Advanced Micro Devices Inc
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Filing: 1976-03-01
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Granted: 1977-08-16
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Expires: 1996-03-01
Abstract
Abstract Selected circuit elements and interconnections of a integrated circuit device are connected by platinum silicide fuse links which open when electrical power exceeds a threshold amount. The fuse is constructed by defining the fuse geometry in a polycrystalline silicon layer over a wafer substrate, depositing a layer of platinum thereover and then sintering the platinum into the polysilicon.
Inventors
- 👤 William Louis Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:25
CPC Classifications
H; H10; H10W; H10W42/00; H10W42/80; H10W20/00; H10W20/40; H10W20/49; H10W20/493; Y; Y10; Y10S; Y10S148/00; Y10S148/02; Y10S148/055; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49107
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A semiconductor integrated circuit comprising, a semiconductor integrated circuit, a plurality of spaced apart metal interconnection means integrated into said integrated circuit for linking circuit elements in said semiconductor integrated circuit, and at least one metal silicide fuse link integrated into said integrated circuit having a generally elongated shape with opposite ends electrically connected to two selected of said metal interconnections, said fuse link having a cross sectional dimension which will electrically open by application of electrical power greater than a preselected threshold power.
Claim 2
Dependent Claim
84 words
A semiconductor integrated circuit comprising, a semiconductor integrated circuit, a plurality of spaced apart metal interconnection means integrated into said integrated circuit for linking circuit elements in said semiconductor integrated circuit, and at least one metal silicide fuse link integrated into said integrated circuit having a generally elongated shape with opposite ends electrically connected to two selected of said metal interconnections, said fuse link having a cross sectional dimension which will electrically open by application of electrical power greater than a preselected threshold power.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein said metal silicide fuse link is platinum silicide.
Claim 4
Dependent Claim
94 words
In an integrated circuit article of manufacture including a substrate and a plurality of circuit elements, and insulation formed on said substrate, the improvement comprising, a plurality of spaced apart metal interconnections forming part of an integrated circuit and at least one fuse link integrated into said integrated circuit having a generally elongated shape with opposite ends electrically connected to two selected of said metal interconnections, said fuse link made of platinum silicide with a minimum cross sectional dimension which will electrically open by application of electrical power greater than a preselected threshold power.
Claim 5
Dependent Claim
94 words
In an integrated circuit article of manufacture including a substrate and a plurality of circuit elements, and insulation formed on said substrate, the improvement comprising, a plurality of spaced apart metal interconnections forming part of an integrated circuit and at least one fuse link integrated into said integrated circuit having a generally elongated shape with opposite ends electrically connected to two selected of said metal interconnections, said fuse link made of platinum silicide with a minimum cross sectional dimension which will electrically open by application of electrical power greater than a preselected threshold power.
Claim 6
Dependent Claim
38 words
The apparatus of claim 3 wherein said platinum silicide fuse link is made of polycrystalline silicon reacted with platinum which is disposed over said polycrystalline silicon, said spaced apart metal interconnections being disposed over said reacted polycrystalline silicon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |