Patent ID: 8415197

Claim:
A method of fabricating a phase change memory device, the method comprising: preparing a semiconductor substrate including cell and peripheral areas separated by an isolation film; forming a word-line driving transistor in the peripheral area of the semiconductor substrate; forming a word line in the cell area and a gate of the word-line driving transistor in the peripheral area, wherein the word line and the gate formed from a first conductive layer; forming a first interlayer insulation film over the semiconductor substrate and on the word line and on the word-line driving transistor; forming a plurality of current path holes and a plurality of first plug holes such that the current path holes penetrate thought the first interlayer insulation and onto the word line and such that the first plug holes penetrate through the first interlayer insulation film onto the word-line driving transistor; filling in the current path holes to form current plugs with a second conductive layer and filling in the first plug holes to form first plugs with the second conductive layer; forming a strapping line in the cell area and first lines in the peripheral area, wherein the strapping line is formed with a third conductive layer so that the strapping line is electrically connected to the word line through the current plugs and wherein the first lines are formed with the third conductive layer so that the first lines are electrically connected to the word-line driving transistor through the first plugs; and forming a switching element over the strapping line.