Patent ID: 7047514

Claim:
A method for customizing an intermediate structure of a semi-custom-made integrated circuit device having at least two metallization layers serving as a customized layer unique to said semi-custom-made integrated circuit device and including lower conductive strips extending in certain directions parallel to one another and upper conductive strips extending in directions perpendicular to said certain directions and an inter-layered insulating layer inserted between said lower conductive strips and said upper conductive strips and a common layer formed under said two metallization layers and common to plural sorts of semi-custom-made integrated circuit devices, comprising the steps of: a) preparing a first design data representative of a first pattern of said lower conductive strips, a first dummy data representative of a first dummy pattern of possible conductive strips equal in length and two-dimensionally arranged at regular pitches, a second design data representative of a second pattern of said upper conductive layers, a third design data representative of a third pattern of contact holes to be formed in said inter-layered insulating layer and said lower conductive strips and a second dummy data representative of a second dummy pattern of possible contact holes to be formed in said inter-layered insulating layer and said possible conductive strips; b) magnifying said first design data so as to produce a magnified data representative of a resized pattern of extensions occupying closed areas around said lower conductive strips; c) deleting the possible conductive strips perfectly and partially overlapped with said lower conductive strips and said extensions from said first dummy pattern so as to determine a first pattern for one of said at least two metallization layers; d) determining a second pattern of said contact holes on the basis of said third design data and said second dummy data; and e) determining a third pattern for the other of said at least two metallization layers.