Patent ID: 7077913

Claim:
An apparatus for fabricating a semiconductor device, comprising: a reaction chamber; a heater disposed outside the reaction chamber; one or more holders for mounting thereon a substrate in the reaction chamber; and a substrate transferring device for transferring the substrate to the holders, wherein the holders are substantially ring shaped with a hollow in the center and a continuous circumference, each of which includes at least two arc-shaped major portions for supporting a circumference of a substrate when the substrate is mounted on the holder, and at least two recessed portions for interconnecting end parts of the major portions, the major portions and the recessed portions being disposed alternately on the circumference of the ring shaped holder, wherein each of the recessed portions has a width larger than that of a tweezer plate of the substrate transferring device and has a height difference with the major portions allowing the tweezer plate to be lowered and retracted from each holder after the substrate is mounted on the major portions and to be inserted into each holder and raised such that the substrate is mounted on the tweezer plate, and the substrate is thermally processed by the heater in the reaction chamber while the substrate is mounted on the holder.