NOVELTY - The raw material of thin film is melted and the melt solution is generated by supplying and heating the raw material such as silicon alloy from one end of container (11). The melt solution is solidified and a rod-shaped structure is formed. A portion of rod-shaped structure is melted by heating the rod-shaped structure using an electron gun (13) and the melted solution is supplied to an evaporation source for forming the thin film.    USE - Method of forming thin-films such as electrically conductive film, optical film, moisture-proof film, etc., on capacitor, sensor, solar cell, etc.    ADVANTAGE - Thin film is formed stably at low cost, since the replenishment of melted raw material is performed continuously. The generation of splash at the time of forming thin-film is suppressed and highly-purified thin film is formed from the raw material of low purity, since low boiling point impurity and void are removed at the time of manufacture of rod-shaped raw material. The adherence of water to the raw material is prevented, since the thin-film is formed in vacuum chamber.    DETAILED DESCRIPTION - The melt solution is cooled from lower portion of container, when solidifying the melt solution. The direction of heat transfer rate of melt solution at the raw-material provisioning side is smaller than the direction of heat transfer rate of melt solution at the side of formation of rod-shaped structure. The material provisioning side of container is made of graphite. An INDEPENDENT CLAIM is included for thin-film forming apparatus which comprises an exhaustion mechanism for exhausting the vacuum chamber. An evaporation source is positioned in the vacuum chamber for evaporating the raw material. The container is provided for molding the melt solution into rod-shaped structure. A pulling-out mechanism (20) pulls out the rod-shaped structure for melting the portion of rod-shaped structure. A conveyance guide (30) with two rollers is provided, where one roller conveys the board and another roller winds up the board. A groove (11g) is formed in the molding portion for passing the rod-shaped structure.    DESCRIPTION OF DRAWING(S) - The drawing shows the top view and side view of thin-film forming apparatus.    Container (11)    Groove (11g)    Electron gun (13)    Pulling out mechanism (20)    Conveyance guide (30)