Patent ID: 7521098

Claim:
A method of forming a polar liquid film on a surface of an organic film formed on a substrate in a processing vessel, the organic film comprising silicon, carbon, hydrogen and oxygen, said method comprising: a modifying step of curing the organic film and imparting an affinity for the polar liquid to the organic film by irradiating the organic film with electron beams by means of an electron-beam irradiation device in a rare gas atmosphere formed in the processing vessel, the rare gas having an atomic number not smaller than that of argon; and an applying step of applying the polar liquid to the surface of the organic film processed by the modifying step, said modifying step comprising the sub-steps of: curing the organic film by irradiating the organic film with the electron beams in the rare gas atmosphere of a first pressure in the processing vessel, the first pressure being below 1 torr; and imparting the affinity for the polar liquid to the organic film by irradiating the organic film with the electron beams in the rare gas atmosphere of a second pressure, the second pressure being 1 torr or above, to obtain a water contact angle of 58° or less on the organic film.