Patent ID: 6402848
Filing Date: 2002-06-11
Classification: C23C,H01L

Abstract:
A single-substrate-treating apparatus for a semiconductor processing system, comprising:a hermetic process chamber; a work table disposed in the process chamber and having an upper surface on which a target substrate is placed; a supply mechanism configured to supply a process gas into the process chamber from a position opposing the upper surface of the work table; an exhaust chamber connected to a bottom portion of the process chamber through a first opening below the work table, the first opening and the exhaust chamber having contours smaller than that of the work table, and the contours of the work table, the first opening, and the exhaust chamber being arranged substantially concentrically with each other; a partition flange disposed in the exhaust chamber, and defining a primary space in an upper side of the exhaust chamber, the primary space directly communicating with the exhaust chamber through the first opening, the partition flange having a second opening, which has a contour smaller than that of the first opening, and the contours of the first and second openings being arranged substantially concentrically with each other; a partition sidewall disposed in the exhaust chamber, and defining a restriction space at a center and a buffer space surrounding the restriction space in a lower side of the exhaust chamber, the restriction space directly communicating with the primary space through the second opening, and the buffer space directly communicating with the restriction space through a plurality of sidewall openings formed at symmetrical positions of the partition sidewall, without directly communicating with the primary space; and an exhaust mechanism connected to the buffer space through an exhaust port, which is formed in a wall of the exhaust chamber and opened to the buffer space, the exhaust mechanism being configured to exhaust the process chamber, and the sidewall openings being located at equidistant positions from the exhaust port.