Patent ID: 7825028

Claim:
A method for manufacturing a semiconductor device comprising: forming a hydrophobic interlayer insulating film having a relative dielectric constant of 3.5 or less above a semiconductor substrate; forming a recess in the interlayer insulating film; depositing a conductive material above the interlayer insulating film having the recess to form a conductive layer; selectively removing the conductive material deposited above the interlayer insulating film by polishing with an alkaline slurry to expose a surface of the interlayer insulating film while leaving the conductive material in the recess; and subjecting the surface of the interlayer insulating film having the recess filled with the conductive material to pressure washing using a resin member and an alkaline washing liquid containing a mixture of an organic acid and an inorganic alkali and exhibiting a pH of more than 9.