Patent ID: 6066575
Filing Date: 2000-05-23
Classification: G11B,H01L

Abstract:
A method for processing a semiconductor article to apply a coating thereto to form a coating layer onto at least one area of the semiconductor article which is to be coated, comprising:holding the semiconductor article upon a wafer support;positioning the semiconductor article supported by said wafer support within a spray processing vessel;relatively adjusting at least one spray-head to achieve a desired vertical spacing of the spray-head relative to a surface of the semiconductor article being coated;supplying a carrier gas to the spray head;spraying a coating through at least one spray-head to provide a coating spray which is directed to areas of the semiconductor article being coated;metering the amount of coating sprayed from the spray-head;moving the spray-head relative to the coated surface by pivoting the spray-head about a spray head pivot axis which is substantially perpendicular to the semiconductor surface being coated, and intersecting the vessel, to allow various positions of the spray-head across the wafer, to coat metered amounts of coating onto the surface of the semiconductor article being coated;rotating the wafer support and supported semiconductor article as the spraying occurs; andcoordinating said metering and said moving such that relative movement between the spray-head and semiconductor article held by the wafer support provides a desired application of coating onto the coated surface;wherein the spraying occurs with the surface being coated being oriented in a downwardly facing orientation.