Patent ID: 11923209
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A substrate processing apparatus, comprising:
a substrate support to support and rotate a substrate;
a treatment liquid spray nozzle configured to spray a treatment liquid on an upper surface of the substrate;
at least one first upper cleaning nozzle configured to spray a first cleaning liquid toward an edge region of the upper surface of the substrate;
at least one second upper cleaning nozzle configured to spray a second cleaning liquid toward the edge region of the upper surface of the substrate;
at least one first lower cleaning nozzle on the substrate support and configured to spray the first cleaning liquid on a lower surface of the substrate;
at least one second lower cleaning nozzle on the substrate support and configured to spray the second cleaning liquid on the lower surface of the substrate;
a bowl assembly around the substrate support, the bowl assembly including:
an annular shaped receiving space surrounding the substrate support, the annular shaped receiving space to accommodate a chemical solution scattered from the substrate, and
an inner collection portion and an outer collection portion sequentially arranged in a radial direction in a lower portion of the annular shaped receiving space;
a discharge guide plate having an annular shape, the discharge guide plate being in the receiving space of the bowl assembly under the substrate, and the discharge guide plate extending outwardly from a circumference of the substrate; and
a discharge separation plate within the receiving space of the bowl assembly, the discharge separation plate being movable upward and downward relative to the discharge guide plate, respectively,
wherein the discharge guide plate includes:
an upwardly inclined plate extending from an upper portion of the inner sidewall away from the substrate support,
a top portion extending from the upwardly inclined plate,
a downwardly inclined plate extending from the top portion away from the substrate support, and
partition walls extending along an upper surface of the downwardly inclined plate, each of the partition walls extending from the top portion to a bottom edge of the downwardly inclined plate at an oblique angle with respect to the bottom edge,

wherein, when the discharge separation plate is in a first position, the discharge separation plate and the discharge guide plate together define a first discharge path through which the first cleaning liquid scattered from the substrate is collected in the outer collection portion, and
wherein, when the discharge separation plate is in a second position, the discharge separation plate and the discharge guide plate together define a second discharge path through which the second cleaning liquid scattered from the substrate is collected in the inner collection portion.