Patent ID: 8324116

Claim:
A method of manufacturing a semiconductor device, comprising: a step of preparing a semiconductor substrate which has an oxide film containing at least one of a rare earth oxide and an alkaline earth oxide, at least a portion of the oxide film being exposed; and a rinse step of supplying the oxide film on the semiconductor substrate with a rinse liquid made of an alkaline chemical or an organic solvent; wherein the step of preparing a semiconductor substrate includes: a step of forming a laminate film on a surface of the semiconductor substrate, the laminate film being obtained by laminating an oxide film containing at least one of a rare earth oxide and an alkaline earth oxide, and a high dielectric constant film made from a material of which the dielectric constant is higher than that of silicon oxide; a step of forming a conductive film on the laminate film; and a gate forming step of forming a gate structure by patterning the conductive film and the laminate film thereby to expose at least a portion of the oxide film; and the step of forming a laminate film includes: a step of forming a photoresist mask in a predetermined region on the oxide film and etching the oxide film exposed from the photoresist mask; and a step of exposing the oxide film in the predetermined region by removing the photoresist mask after the etching, wherein the rinse step is executed immediately after at least one of: the formation of the oxide film; the oxide film etching on the part exposed from the photoresist mask; the removal of the photoresist mask; and the gate forming step.