Patent ID: 7972920

Claim:
A method of manufacturing a semiconductor device including memory cells having MISFETs, comprising steps of: (a) forming a first film over a conductive film formed over a main surface of a semiconductor substrate; (b) patterning the first film to form first patterns each having a shape extending in a first direction; (c) patterning the first patterns in a second direction perpendicular to the first direction to form second patterns each separated in the first direction; and (d) patterning the conductive film by using the second patterns to form gate patterns for gate electrodes of the MISFETs, wherein the memory cell comprises a memory cell of a static random memory, wherein the memory cell includes a first drive MISFET, a second drive MISFET, a first transfer MISFET and a second transfer MISFET such that the first drive MISFET and the first transfer MISFET are cross-coupled to the second drive MISFET and the second transfer MISFET, and wherein the first drive MISFET and the first transfer MISFET are arranged with point symmetry to the second drive MISFET and the second transfer MISFET, respectively, with respect to a center point in a memory cell forming region.