Semiconductor integrated circuit having transistors formed...

Details Semiconductor integrated circuit having transistors formed... Semiconductor integrated circuit having transistors formed...

2007-11-13

2007-11-13

Nadav, Ori (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S059000, C257S072000

Reexamination Certificate

active

10648256

ABSTRACT:
A layout capable of placing a circuit constituted by a plurality of transistors in a small-with region is automatically formed. A search section inputs data on a circuit and makes a search for a set of routes formed so that passage through any one of the transistors occurs only one time and so that the combination of routes in one set can cover the entire circuit network. An extraction section extracts a set of routes having the smallest number of routes in sets of route found by searching. A width determination section determines the layout width from the widths of source and drain electrodes of each transistor, the width of the region between the source and drain electrodes, the width of the region between some of the adjacent pairs of the transistors not combined into a common electrode, the number of transistors, and the smallest number of routes. A layout determination section forms information on a layout in which all the source, drain and gate electrodes of the transistor included in the circuit are placed in a small-width region having the determined width.

REFERENCES:
patent: 5270657 (1993-12-01), Wirth et al.
patent: 5777369 (1998-07-01), Lin et al.
patent: 6177691 (2001-01-01), Iranmanesh et al.
patent: 6707139 (2004-03-01), Fujii et al.
patent: 6995516 (2006-02-01), Aoki et al.
patent: 1239355 (1999-12-01), None
patent: 9-15637 (1997-01-01), None
patent: 10-133232 (1998-05-01), None

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