Patent ID: 9127358
Filing Date: 2015-09-08
Classification: B05D,C23C,H01L

Abstract:
1. A film forming apparatus for forming a polyimide film on a substrate installed within a film forming container by supplying a first raw material gas obtained by vaporizing a first raw material comprised of an aromatic acid dianhydride and a second raw material gas obtained by vaporizing a second raw material comprised of an aromatic diamine to the substrate, the apparatus comprising: a first vaporizer installed such that an internal pressure thereof can be adjustable, and configured to vaporize the first raw material in a solid state, and supply the vaporized first raw material gas to the substrate; a second vaporizer installed such that an internal pressure thereof can be adjustable, and configured to vaporize the second raw material in a liquid state, and supply the vaporized second raw material gas to the substrate; a first pressure measurement unit including a first manometer installed in a first supply flow path along which the first raw material gas flows from the first vaporizer to the film forming container; a second pressure measurement unit including a second manometer installed in a second supply flow path along which the second raw material gas flows from the second vaporizer to the film forming container; a controller configured to calculate a supply amount of the first raw material gas based on first data measured by the first pressure measurement unit, calculating a supply amount of the second raw material gas based on second data measured by the second pressure measurement unit, and control the first and second vaporizers such that the calculated supply amount of the first raw material gas and the calculated supply amount of the second raw material gas are uniform, respectively, a first carrier gas supply unit connected to the first vaporizer through a third supply flow path and configured to supply a first carrier gas carrying the first raw material gas to the first vaporizer; and a second carrier gas supply unit connected to the second vaporizer through a fourth supply flow path and configured to supply a second carrier gas carrying the second raw material gas to the second vaporizer, wherein the first carrier gas supply unit and the film forming container are connected through a first bypass flow path detouring the first vaporizer and the first manometer is installed at a position at which the pressure of the first bypass flow path detouring the first vaporizer is measurable, and the second carrier gas supply unit and the film forming container are connected through a second bypass flow path detouring the second vaporizer and the second manometer is installed at a position at which the pressure of the second bypass flow path detouring the second vaporizer is measurable.