Patent ID: 9234278
Filing Date: 2016-01-12
CPC Classification: C23C

Claim Text:
1. A semiconductor process system comprising: a guiding element structure arranged within a chamber; one or more inlets formed on a first side of the guiding element structure, the one or more inlets having inlet sizes selected according to a removal rate and to mitigate gas flow variations; an outlet formed on a second side of the guiding element structure and having an outlet size selected according to the removal rate, the second side being on a bottom of the guiding element structure; a transportation region within the guiding element structure and coupled to the one or more inlets and the outlet; a seal encircling the outlet, and configured to seal an interface between the outlet and an exit port of the chamber; and a wafer support arranged in the chamber and directly above the guiding element structure; wherein the guiding element structure is configured to pass all gas flowing into the transportation region from the one or more inlets to the exit port through the outlet.