Patent ID: 7579041

Claim:
A method of manufacturing a dielectric film comprising: forming a dielectric precursor film by coating sol made of an organic metal compound on a lower layer; drying the dielectric precursor film; degreasing the dielectric precursor film; and baking the dielectric precursor film for crystallization to form a dielectric film, wherein the drying includes: a first drying the dielectric precursor film by heating the dielectric precursor film to a temperature lower than a boiling point of a solvent which is a main solvent of the sol and then holding the dielectric precursor film at the temperature for a predetermined period of time; a second drying the dielectric precursor film further by reheating the dielectric precursor film and then holding the dielectric precursor film at the temperature for another predetermined period of time, and wherein a rate of temperature rise in the degreasing is the range from 0.5 to 1.5 (degrees C./sec), wherein a temperature to be attained in the degreasing is higher by a temperature selected from a range from 100 degrees C. to 300 degrees C. than the boiling point of the solvent which is the main solvent of the sol, and wherein a temperature of the baking is 680 degrees C. or above.