US 5,859,449 AGranted

Semiconductor integrated circuit

AssigneeMitsubishi Denki Kabushiki Kaisha

InventorsHiroyuki Kobayashi, Shuichi Ichikawa, Yoshihide Ajioka

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Abstract

A semiconductor integrated circuit in which adjacent terminals are formed by using contacts for connecting two metal layers or formed by using any of the metal layers so as to be disposed away from each other with an interval equal to larger than one wiring interval in the vertical and the horizontal directions, for example, diagonally or obliquely in a cell.

Claims4

Dependent claims

A semiconductor integrated circuit device comprising:

a plurality of cells, each having terminals for input, output, or input and output on a semiconductor substrate of the device;
a plurality of first wirings disposed in a first metal layer above the substrate, each of the first wirings extending in a first direction;
and
a plurality of second wirings disposed in a second metal layer different from the first metal layer above the substrate, each of the second wirings extending in a second direction substantially orthogonal to said first direction;
such that when a plurality of virtual first lines arranged at equal intervals in parallel and a plurality of virtual second lines arranged at equal intervals in parallel are supposed, terminals included in one of the cells are respectively arranged on cross points where different ones of said plurality of virtual first lines and different ones of said plurality of virtual second lines are respectively crossing, each of the virtual first lines extending in the first direction and each of the virtual second lines extending in the second direction;
wherein
the terminals in said one cell are electrically coupled to said plurality of first wirings, respectively, and at least one of the terminals in said one cell is electrically coupled to one of said plurality of second wirings, respectively,
said plurality of first wirings are respectively arranged on virtual first lines which pass at the terminals in said one cell, a first end of each first wiring located at the electrically coupled terminal, and a second end of each first wiring located on a cell other than said one cell, and
said one of said plurality of second wirings is-arranged on one of the plurality of virtual second lines which passes at said one terminal in said one cell, a first end of said one second wiring being located at the electrically coupled terminal, and a second end of said one second wiring being located on a cell other than said one cell.

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Dependencies are inferred from the claim text.

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Abstract

A semiconductor integrated circuit device comprising:

a plurality of cells, each having terminals for input, output, or input and output on a semiconductor substrate of the device;
a plurality of first wirings disposed in a first metal layer above the substrate, each of the first wirings extending in a first direction;
and
a plurality of second wirings disposed in a second metal layer different from the first metal layer above the substrate, each of the second wirings extending in a second direction substantially orthogonal to said first direction;
such that when a plurality of virtual first lines arranged at equal intervals in parallel and a plurality of virtual second lines arranged at equal intervals in parallel are supposed, terminals included in one of the cells are respectively arranged on cross points where different ones of said plurality of virtual first lines and different ones of said plurality of virtual second lines are respectively crossing, each of the virtual first lines extending in the first direction and each of the virtual second lines extending in the second direction;
wherein
the terminals in said one cell are electrically coupled to said plurality of first wirings, respectively, and at least one of the terminals in said one cell is electrically coupled to one of said plurality of second wirings, respectively,
said plurality of first wirings are respectively arranged on virtual first lines which pass at the terminals in said one cell, a first end of each first wiring located at the electrically coupled terminal, and a second end of each first wiring located on a cell other than said one cell, and
said one of said plurality of second wirings is-arranged on one of the plurality of virtual second lines which passes at said one terminal in said one cell, a first end of said one second wiring being located at the electrically coupled terminal, and a second end of said one second wiring being located on a cell other than said one cell.

6 more elements