Patent ID: 11908728
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 10:
11. An apparatus for depositing films on a backside of a substrate, the apparatus comprising:
a processing chamber having an upper section and a lower section;
a substrate support mechanism directly physically coupled to a side wall of the processing chamber and configured to hold a substrate between the upper section and the lower section, the substrate having a front side surface for electrical devices and a backside surface opposite the front side surface, the substrate support mechanism having an annular support surface configured to support the substrate along an entire perimeter of the substrate without being in contact with interior regions of the front side surface and without being in contact with interior regions of the backside surface, the substrate support mechanism configured to hold the substrate with the front side surface facing the upper section and with the backside surface facing the lower section, the substrate support mechanism configured to create a seal at the perimeter of the substrate sufficient to prevent passage of deposition gas from the lower section to the upper section when the substrate is being held by the substrate support mechanism; first and second exhaust ports each provided in the wall of the processing chamber,
wherein the substrate support is directly connected to the wall at an area of the wall between the first and second exhaust ports such that the first exhaust port is coupled to the upper section of the processing chamber and the second exhaust port is coupled to the lower section; a gas distribution unit positioned in the lower section of the processing chamber and facing the backside surface of the substrate when the substrate is being held by the substrate support mechanism, the gas distribution unit configured to direct deposition gas to the backside surface of the substrate for depositing a film on the backside surface of the substrate; and a controller configured to control flow of the deposition gas from the gas distribution unit for deposition on the backside surface of the substrate.