Patent ID: 8513140

Claim:
A process for fabricating a semiconductor device, the process comprising: a step of cleaning, using a post-dry etching cleaning liquid composition, a substrate that has been subjected to ashing removal of a mask pattern after dry etching through the mask pattern, wherein the substrate is provided with a wiring material formed from at least one of copper and a copper alloy, and an interlayer insulating film formed from at least one of a low dielectric constant film and silicon oxide, which are exposed by dry etching, wherein the post-dry etching cleaning liquid composition comprises at least one type of fluorine compound, glyoxylic acid, at least one type of organic acid salt, and water, wherein said organic acid salt is selected from the group consisting of at least one of ammonium oxalate, ammonium tartrate, and ammonium citrate, and said process does not use an organic solvent.