Patent ID: 6761771
Filing Date: 2004-07-13
Classification: C23C,H01L

Abstract:
A semiconductor substrate-supporting apparatus for supporting and heating a single semiconductor substrate inside a vacuum-pumped reaction chamber, comprising:a substrate-supporting surface having a concave portion including a depression slanting toward the center of the substrate-supporting surface, wherein only a peripheral portion of the back surface of the substrate, when loaded, contacts the slanting surface of the concave portion; a surface peripheral portion formed around the substrate-supporting surface, said surface peripheral portion having a lip portion which protrudes in a ring shape, said lip portion having a top surface and a slanted inner side surface continuing from the top surface and extending to the substrate-supporting surface to prevent a plasma from converging on either the lip portion or the substrate, said top surface being configured to be of substantially the same height as a top surface of the substrate when loaded, said inner slanted side surface being slanted outward at an angle greater than the substrate-supporting surface at a position contacting the substrate when loaded; a heating element embedded below the concave portion; a radio-frequency electrode of a metal element embedded below the concave portion; and no mechanical mechanism to clamp the substrate on the substrate-supporting surface.