Patent ID: 8890107

Claim:
A semiconductor device comprising: a semiconductor substrate; a select transistor provided on a principal surface of the semiconductor substrate; an interlayer insulating film provided over the select transistor; a plug disposed in an opening in the interlayer insulating film, the plug being electrically connected to the select transistor; an insulative adhesive layer provided on the interlayer insulating film, a material of the insulative adhesive layer being different from a material of the interlayer insulating film; a first conductive adhesive layer provided on and in contact with an upper surface of the plug in a self-aligned manner, a sidewall of the first conductive adhesive layer being arranged at the same position on the upper surface of the plug as a sidewall of the plug, a material of the first conductive adhesive layer being different from a material of the plug; and a phase change material layer provided on both of the insulative adhesive layer and the first conductive adhesive layer.