Patent ID: 6864545

Claim:
A semiconductor device, comprising: a semiconductor substrate of a first conductivity type having a main surface; a plurality of first impurity layers of a second conductivity type different from said first conductivity type, said plurality of first impurity layers forming stripes in said main surface; an insulating film arranged on said main surface; a plurality of gate electrodes, said plurality of gate electrodes forming stripes in said insulating film crossing said plurality of first impurity layers; a plurality of low-resistance wires lower in resistance than said plurality of first impurity layers, said plurality of low-resistance wires forming stripes on said insulating film extending in the same direction as that of said plurality of first impurity layers, said plurality of low-resistance wires each forming a pair with one of said plurality of first impurity layers; a plurality of contact plugs provided in said insulating film and arranged between adjacent ones of said plurality of gate electrodes, at least one of said plurality of contact plugs being provided to one of said low-resistance wires, each contact plug having one end contacting a corresponding one of said plurality of low-resistance wires and another end extending toward said main surface; a plurality of second impurity layers of said second conductivity type, said plurality of second impurity layers each being arranged in said main surface to correspond to one of said plurality of contact plugs, wherein said plurality of second impurity layers each, only in a part thereof, touch or overlap one of said plurality of first impurity layers, which forms a pair with one of said plurality of low-resistance wires having contact with a contact plug corresponding to one of said plurality of second impurity layers, and said another end of said each contact plug entirely and directly touches said one of said plurality of second impurity layers and said each contact plug is composed of a metal.