EP0074825A2
Expired / Lapsed
EP
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Manufacture of integrated circuits by masterslice methods
Assignee: Fujitsu Ltd
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Filing: 1982-09-10
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Granted: —
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Expires: 2002-09-10
Abstract
Abstract In the manufacture of an integrated circuit by a master slice method, a feeder line (65) for supplying electric power to a unit-cell array (1) is gradually narrowed in width from each end towards the middle (8) of the array. In this way, the supply of sufficient voltage for the unit-cells can be maintained at the middle of the IC whilst the area availabe for interconnections is increased.
Inventors
- 👤 Tetsu Tanizawa
- 👤 Hitoshi Omichi
- 👤 Yoshiharu Mitono
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 13:27
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/43; H10D; H10D84/00; H10D84/01; H10D84/90; H10W20/427; H10W72/00; H10W72/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
An integrated circuit manufactured by the master slice method having an array of unit-cells and interconnecting domains for connecting said unit-cells and for forming desirable logic circuits by change of interconnections inside said unit-cells and change of interconnections between said unit cells, said circuit comprising feeder lines for supplying power to said unit-cells, said feeder lines lying from the periphery of said array toward the inside of said array, the feeder lines being substantially narrowed in width from the periphery to the middle of said array.
Claim 2
Dependent Claim
86 words
An integrated circuit manufactured by the master slice method having an array of unit-cells and interconnecting domains for connecting said unit-cells and for forming desirable logic circuits by change of interconnections inside said unit-cells and change of interconnections between said unit cells, said circuit comprising feeder lines for supplying power to said unit-cells, said feeder lines lying from the periphery of said array toward the inside of said array, the feeder lines being substantially narrowed in width from the periphery to the middle of said array.
Claim 3
Dependent Claim
44 words
An integrated circuit as defined in claim 1, wherein said feeder lines are gradually narrowed in width from the periphery to the middle of said array by reduction of the width from at least one side facing said interconnecting domains for connecting said unit-cells.
Claim 4
Dependent Claim
36 words
An integrated circuit as defined in claim 1, wherein said feeder lines have each non-feeder portion therein and the width of said non-feeder portion is gradually wider from the periphery to the middle of said array.
Claim 5
Dependent Claim
142 words
A master slice method of manufacturing an integrated circuit, wherein a substrate is provided with arrays of unit cells (1), there being areas (21) between the arrays for accommodating electrical connections whereby terminals of such unit cells are interconnected to form logic circuitry of the finished integrated circuit, and is also provided with a power supply line (61) and feeder lines (65) for.feeding power to the unit cells, each of the said feeder lines having one end thereof connected to the said power supply line, characterized in that at least one of the said feeder lines is made so as to have first and second portions of different respective effective widths, the said second portion (8) being smaller in effective width , and being further along the feeder line from the said one end thereof, than the said first portion (7). '
Claim 6
Dependent Claim
142 words
A master slice method of manufacturing an integrated circuit, wherein a substrate is provided with arrays of unit cells (1), there being areas (21) between the arrays for accommodating electrical connections whereby terminals of such unit cells are interconnected to form logic circuitry of the finished integrated circuit, and is also provided with a power supply line (61) and feeder lines (65) for.feeding power to the unit cells, each of the said feeder lines having one end thereof connected to the said power supply line, characterized in that at least one of the said feeder lines is made so as to have first and second portions of different respective effective widths, the said second portion (8) being smaller in effective width , and being further along the feeder line from the said one end thereof, than the said first portion (7). '
References Cited (Backward Citations)
No citation records indexed.
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