Patent ID: 7258124
Filing Date: 2007-08-21
Classification: B08B,H01L

Abstract:
1. An apparatus for treating a surface of an object with a reactive gas comprising: an object holding structure configured to hold said object; a rotational drive mechanism connected to the object holding structure to rotate the object holding structure and said object; a fluid dispensing structure positioned relative to said object holding structure to dispense a processing fluid onto said surface of said object, said processing fluid forming a fluid layer on said surface; a gas nozzle structure positioned relative to said object holding structure, said gas nozzle structure having numerous openings on a lower planar surface of said gas nozzle structure to eject multiple streams of gaseous material onto said fluid layer formed on said surface of said object at different locations on said fluid layer, said gas nozzle structure being configured to introduce said reactive gas to reach and react with said surface of said object, said gas nozzle structure including a grid-like portion with a plurality of spaces, said spaces of said grid-like portion allowing said processing fluid dispensed from said fluid dispensing structure to pass through said gas nozzle structure; a pressure controlling device operatively connected to said gas nozzle structure to control pressure of said multiple streams of said gaseous material ejected from said gas nozzle structure; and a controller operatively connected to said pressure controlling device, said controller being configured to control said pressure controlling device so that said multiple streams of said gaseous material produce at least depressions on said fluid layer.