Patent ID: 6919541

Claim:
An apparatus for fabricating a semiconductor device, comprising: a wafer heater which heats a semiconductor wafer to a first temperature; a wafer cooler which cools the semiconductor wafer, which has been heated by the wafer heater, to a second temperature; first and second conveying arms which deliver the semiconductor wafer; an arm heater which heats the first conveying arm to have an optimum temperature, between the first and second temperatures; an arm cooler which cools the second conveying arm to have an optimum temperature; and an intermediate chamber in which the semiconductor wafer is controlled in temperature at between the first and second temperatures, wherein the semiconductor wafer is delivered to the intermediate chamber before heat treatment by the wafer heater, and before cooling treatment by the wafer cooler, wherein the first conveying arm delivers the semiconductor wafer between the intermediate chamber and the wafer heater, and wherein the second conveying arm delivers the semiconductor wafer to the intermediate chamber, and from the intermediate chamber to the wafer cooler.