Patent ID: 9111970
Filing Date: 2015-08-18
Classification: H01L

Abstract:
1. An apparatus for the heat treatment of disc shaped substrates which comprises the following: at least one radiation source; a treatment chamber accommodating the substrate having an upper wall element and a lower wall element at least one of the wall elements which lies adjacent to the at least one radiation source being substantially transparent to radiation from the radiation source; and at least a first gas inlet apparatus which comprises the following: a plate element which is disposed within the treatment chamber between the lower wall element and the upper wall element and being substantially parallel to a plane of the upper wall element, the plate element configured to have a larger diameter than a substrate placed in the treatment chamber, the plate element defining a hole region that is configured to have a diameter that substantially corresponds to a diameter of a substrate placed in the treatment chamber, the hole region including a plurality of through holes that extend perpendicularly through the plate element and face the lower wall element; a collar ring defining a centre point disposed between the plate element and the upper wall element, the collar ring surrounding the hole region, and having at least one inlet opening; and a first gas conveyance duct extending at least partially within the treatment chamber having an outlet which is aligned with the inlet opening of the collar ring, a gas flow flowing out of the outlet having a main flow direction which is directed past the centre point of the collar ring and at an angle with a radial line passing from the centre point of the collar ring and extending through a centre point of the outlet such that the main flow direction past the centre point of the collar ring is in a clockwise or counterclockwise direction.