Computer-readable recording medium storing semiconductor designing program for improving both integration and connection of via-contact and metal

A computer-readable recording medium for storing a program for driving a computer to generate a set of mask patterns, the mask patterns being used to manufacture a semiconductor device having X (X being a natural number) wiring layers, wherein the program includes the steps of:

• arranging functional blocks and elements of the semiconductor device in a chip area scheduled for manufacturing the semiconductor device with the use of an automatic layout tool;
• arranging main wires in a layer N of the semiconductor device (N satisfying 0<=N<=X−1), main wires in a layer N+1 of the semiconductor device, and via-contacts in the layer N with the use of the automatic layout tool, to connect the functional blocks and elements to one another through the main wires and via-contacts;
• and
• arranging extensions of the main wires that extend only in line with the main wires in the layer N and N+1, respectively, together with the via-contacts in the layer N, with the use of the automatic layout tool,
• wherein a width of each extension is equal to or narrower than a width of its corresponding main wire.