Cleaner composition, method for making and using same
AssigneeCT Associates, Inc.
InventorsDonald C. Grant, Mark R. Litchy
Life of this patent
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Abstract
A cleaning solution composition for use on electronic component and equipment employed in the cleaning of these components. The cleaning solution comprises ultrapure water containing carbonic acid plus an oxidizing agent selected from hydrogen peroxide, ozone, and combinations thereof. The invention includes a method of removing contaminants from electronic components, containers and associated equipment using the cleaning solution of novel composition. Further, the invention includes a method of preparing the novel cleaning solution composition by contacting carbon dioxide gas with ultrapure water and adding an oxidizing agent, or by contacting carbon dioxide gas with an ultrapure water solution of oxidizing agent.
Claims9
A cleaning solution composition for removing contaminants from items comprising:
- (a) water;
- (b) carbonic acid;
- and
- (c) hydrogen peroxide present at a solution concentration of 4% to 6% by weight, plus ozone at a saturation concentration.
An acidic cleaning solution composition for use in semiconductor fabrication processes, for removing contaminants from items comprising:
- (a) ultrapure water;
- (b) carbonic acid present in said cleaning solution in a concentration sufficient to produce a solution pH in the range 2.0 to about 5.0;
- and
- (c) hydrogen peroxide present in said cleaning solution at a solution concentration of 4% to 6% by weight.
A cleaning solution composition for use in semiconductor fabrication processes and for removing contaminants from items comprising:
- (a) ultrapure water;
- (b) carbonic acid;
- and
- (c) hydrogen peroxide present at a solution concentration of 1-6 percent by weight.
A cleaning solution composition for use in semiconductor fabrication processes and removing contaminants from items comprising:
- (a) ultrapure water;
- (b) carbonic acid;
- and
- (c) ozone at a saturation concentration.
Dependencies are inferred from the claim text.