Patent US5068549A successfully refreshed from Google Patents.
US5068549A
Expired / Lapsed
US
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Semiconductor integrated circuit apparatus having programmable logic device
Assignee: Toshiba Corp
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Filing: 1990-11-16
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Granted: 1991-11-26
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Expires: 2010-11-16
Abstract
Abstract According to this invention, there is disclosed a semiconductor integrated circuit apparatus having a programmable logic gate wherein whether an opening for connecting a metal wire in a programming region is present or absent is determined in a manufacturing step by determining the content of a program in the programming region, and the program is performed by determining whether a programming element is connected to the metal wire through the opening or not.
Inventors
- 👤 Hiroshi Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:08
CPC Classifications
H; H10; H10B; H10B20/00; H10B20/20; H10D; H10D84/00; H10D84/80; H10D84/82; H10D84/83; H10D84/85; H10D84/853
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
A semiconductor integrated circuit apparatus comprising: a programming region having an AND region and an OR region, wherein said AND region and said OR region are programmed, whether an opening for connecting a metal wire in said programming region is present or absent is determined in a manufacturing step in accordance with a content of a program performed in said programming region, and the program is performed by determining whether a programming element is connected to said metal wire through said opening or not.
Claim 2
Dependent Claim
84 words
A semiconductor integrated circuit apparatus comprising: a programming region having an AND region and an OR region, wherein said AND region and said OR region are programmed, whether an opening for connecting a metal wire in said programming region is present or absent is determined in a manufacturing step in accordance with a content of a program performed in said programming region, and the program is performed by determining whether a programming element is connected to said metal wire through said opening or not.
Claim 3
Dependent Claim
22 words
An apparatus according to claim 1, wherein said opening for connecting said metal wire is a through hole of a multi-layered wiring.
Claim 4
Dependent Claim
31 words
An apparatus according to claim 1, wherein said through hole of said multi-layered wiring is a through hole for connecting a first metal wiring layer to a second metal wiring layer.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 1, wherein said opening for connecting said metal wire is a contact hole for connecting metal wires to some of devices except for metal wires.
Claim 6
Dependent Claim
23 words
An apparatus according to claim 1, wherein said programming element is a metal Schottky field effect transistor formed on a gallium arsenide substrate.
Claim 7
Dependent Claim
98 words
A semiconductor integrated circuit apparatus on which a programmable logic gate is formed, comprising: a programming region having an AND region and an OR region, wherein a pattern of said OR region is fixed, programming is performed in said AND region, whether an opening for connecting a metal wire in said programming region is present or absent is determined in a manufacturing step in accordance with a content of a program performed in said programming region, and the program is performed by determining whether a programming element is connected to said metal wire through said opening or not.
Claim 8
Dependent Claim
98 words
A semiconductor integrated circuit apparatus on which a programmable logic gate is formed, comprising: a programming region having an AND region and an OR region, wherein a pattern of said OR region is fixed, programming is performed in said AND region, whether an opening for connecting a metal wire in said programming region is present or absent is determined in a manufacturing step in accordance with a content of a program performed in said programming region, and the program is performed by determining whether a programming element is connected to said metal wire through said opening or not.
Claim 9
Dependent Claim
22 words
An apparatus according to claim 6, wherein said opening for connecting said metal wire is a through hole of a multi-layered wiring.
Claim 10
Dependent Claim
31 words
An apparatus according to claim 6, wherein said through hole of said multi-layered wiring is a through hole for connecting a first metal wiring layer to a second metal wiring layer.
Claim 11
Dependent Claim
30 words
An apparatus according to claim 6, wherein said opening for connecting said metal wire is a contact hole for connecting metal wires to some of devices except for metal wires.
Claim 12
Dependent Claim
23 words
An apparatus according to claim 6, wherein said programming element is a metal Schottky field effect transistor formed on a gallium arsenide substrate.
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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |