Patent ID: 7740703
Filing Date: 2010-06-22
Classification: C23C,C30B

Abstract:
1. A semiconductor film formation device, comprising: a reaction vessel that includes a gas flow path to allow a source gas to pass through, a substrate mount site upon which to mount a substrate being provided in the gas flow path inside the reaction vessel, said substrate mount site being located on an inside surface of said reaction vessel along a first side of said reaction vessel; a heater that is disposed along only a single side of said reaction vessel, outside of the reaction vessel on said first side along which the substrate mount site inside the reaction vessel is mounted; a cooling device that is disposed along only a single side of said reaction vessel, outside of the reaction vessel on a second side substantially directly opposite to the heater, said cooling device controlling an internal temperature of the reaction vessel in a first section of the gas flow path where the substrate mount site is located; and a thermal conductivity adjusting member that is disposed between the reaction vessel and the cooling device, wherein the thermal conductivity adjusting member allows the first section along the gas flow path where the substrate mount site is located to have a thermal conductivity different from that of a second section along the gas flow path, in order to lower a thermal diffusion effect of the source gas in the first section, thereby forming a temperature gradient in the reaction vessel by providing a difference in temperature between regions of the reaction vessel.