Standard cell, cell library using a standard cell and method for arranging via contact
AssigneeKabushiki Kaisha Toshiba
InventorSatoshi Tanaka
Life of this patent
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Abstract
According to an aspect of the present invention, there is provided a standard cell, including a cell frame having a rectangular region, a power supply interconnection, a center line of the power supply interconnection overlapping with a side line along a first direction of the cell frame, a via contact, the center of the via contact overlapping with the center line of the power supply interconnection and a grid having a minimum interval in a layout of the via contacts, wherein a width of the cell along the first direction is an integral multiplication of the grid and the center of the via contact is at a distance of at least 1.5 multiplication of the grid from the nearest apex in the cell frame.
Claims17
A standard cell, comprising;
- a power supply interconnection, a center line of the power supply interconnection overlapping with a side line along a first direction of a cell frame being an outer frame with a rectangular shape used in an automatic layout program;
- and
- a via contact connecting between the power supply interconnection and a substrate, the center of the via contact overlapping with the center line of the power supply interconnection,
- wherein a width of the cell along the first direction is an integral multiplication of a grid having a minimum interval on a layout used in the automatic layout program and the center of the via contact is at a distance of at least 1.5 times a number of the grid from a nearest apex of the cell frame.
A cell library comprising;
- a power supply interconnection, a center line of the power supply interconnection overlapping with a side line along a first direction of a cell frame being an outer frame with a rectangular shape used in an automatic layout program;
- a via contact connecting between the power supply interconnection and a substrate, the center of the via contact overlapping with the center line of the power supply interconnection;
- and
- a standard cell having the center of the via contact being at a distance of at least 1.5 times a number of a grid from a nearest apex of the cell frame,
- wherein a width of the cell along the first direction is an integral multiplication of the grid and the plurality of standard cells respectively have the cell frame with a same height along a second direction perpendicular to the first direction.
A method for arranging a via contact, comprising;
- forming a cell frame being an outer frame with a rectangular shape used in an automatic layout program, a width of the cell along a first direction of the cell frame being an integral multiplication of a grid having a minimum interval on a layout used in the automatic layout program;
- arranging a power supply interconnection, a center line of the power supply interconnection overlapping with a side line along the first direction of the cell frame;
- and
- arranging the via contact, the center of the via contact overlapping with the center line of the power supply interconnection, and the center of the via contact being at a distance of at least 1.5 times a number of the grid from a nearest apex in the cell frame.
Dependencies are inferred from the claim text.