VAPOR PHASE GROWTH APPARATUS
Provided is a vapor phase growth apparatus having a rotation/revolution mechanism by which a rolling member is prevented from riding onto an adjacent rolling member. In a vapor phase growth apparatus having a rotation/revolution structure in which a plurality of substrate retaining members 21 are rotatably provided in the circumferential direction of the susceptor via a rolling member(ball 22,23 ) on a susceptor 11, heated by a heating unit as well as is rotated by a driving unit, the substrate retaining member is rotated accompanied by the rotation of the susceptor and a substrate 12 retained by the substrate retaining member is rotated while being revolved with respect to the rotation axis of the susceptor. As for the rolling members, rolling members different diameters (a large diameter ball 22 and a small diameter ball 23 ) are alternately arranged.
1 . A vapor phase growth apparatus having a rotation/revolution structure in which a plurality of substrate retaining members are rotatably provided in the circumferential direction of the susceptor via a rolling member on a susceptor which is heated by a heating unit as well as is rotated by a driving unit, the substrate retaining member is rotated accompanied by the rotation of the susceptor and a substrate retained by the substrate retaining member is rotated while being revolved with respect to the rotation axis of the susceptor, characterized in that, for the rolling members, rolling members having different diameters are alternately arranged.