Patent ID: 8865258

Claim:
A method of manufacturing a thin film in a film forming apparatus, the film forming apparatus comprising: an evaporation chamber; a film forming chamber which is provided adjacent to the evaporation chamber and in which a substrate is provided; vacuum pumps respectively connected to the evaporation chamber and the film forming chamber; a nonreactive gas introduction mechanism connected to one or both of the evaporation chamber and the film forming chamber; an evaporation source provided in the evaporation chamber, holding a film formation material, and having a semi-sealed structure including an opening face; a moving mechanism configured to cause the evaporation source to move such that the opening face is able to be located close to the substrate; and a conductance variable structure provided between the evaporation chamber and the film forming chamber, the method comprising: a first step of performing film formation on the substrate in a state where the opening face of the evaporation source holding the heated film formation material is located in the film formation chamber and close to the substrate while evacuating the evaporation chamber and the film forming chamber without shutting off communication between the evaporation chamber and the film forming chamber by the conductance variable structure; a second step of suppressing evaporation of the film formation material by introducing a nonreactive gas to the evaporation chamber and the film forming chamber to adjust pressure in each of the evaporation chamber and the film forming chamber to a predetermined pressure or more while maintaining a state where the communication between the evaporation chamber and the film forming chamber is not shut off; a third step of securing a space necessary for shutting off the communication between the evaporation chamber and the film forming chamber by causing the evaporation source to move by the moving mechanism such that the opening face passes through the conductance variable structure and is located away from the substrate; a fourth step of activating the conductance variable structure to shut off the communication between the evaporation chamber and the film forming chamber; and a fifth step of cooling the film formation material while continuously introducing the nonreactive gas to the evaporation chamber, wherein during the third to fifth steps, each of the pressure in the film forming chamber and the pressure in the evaporation chamber is maintained at the predetermined pressure or more and when the opening face passes through the conductance variable structure in the third step, the opening face faces the substrate.