Plasma etch cleaning in low pressure chemical vapor deposition systems
First Claim
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1. A method of removing deposition products from the interior of a chemical vapor deposition chamber comprising the steps of:
- removing a device processed in said chamber and providing a pair of r.f. electrodes relative to said chamber;
mounting one of said electrodes into said chamber following removal of the device processed and sealing said chamber;
supplying a cleaning gas into said chamber, andsupplying r.f. electrical power between said pair of electrodes to establish an r.f. plasma of the cleaning gas within said chamber to clean by plasma etching deposition products from the interior of said chamber.
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Abstract
A system for in situ plasma etch removal of deposition products that accumulate during device processing. An r.f. electrode is configured to removably fit coaxially within the chamber, a quartz tube. A chamber heater shield functions also as an r.f. return. Cleaning gas is introduced into the chamber and r.f. power supplied to the electrodes to initiate an r.f. plasma which etch cleans formations on the quartz tube walls. The deposition equipment is cleaned without the need for disassembly.
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Citations
6 Claims
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1. A method of removing deposition products from the interior of a chemical vapor deposition chamber comprising the steps of:
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removing a device processed in said chamber and providing a pair of r.f. electrodes relative to said chamber; mounting one of said electrodes into said chamber following removal of the device processed and sealing said chamber; supplying a cleaning gas into said chamber, and supplying r.f. electrical power between said pair of electrodes to establish an r.f. plasma of the cleaning gas within said chamber to clean by plasma etching deposition products from the interior of said chamber. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification