Cleaning method for vapor phase deposition apparatus, and vapor phase deposition apparatus
First Claim
1. A cleaning method for a vapor phase deposition apparatus for forming film onto a substrate by introducing film forming gas into a chamber via a shower head, comprising:
- a step of activating a cleaning gas including a compound containing fluorine atoms by exposure to microwaves, and introducing the radicals of said cleaning gas into said chamber; and
a step for raising the temperature of said shower head to a temperature greater than that used when forming film on said substrate.
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Accused Products
Abstract
A cleaning method for a CVD apparatus which forms films on wafers by introducing film forming gas into a chamber by means of a shower head. In this method, the NF3 gas, which forms the cleaning gas including a compound containing fluorine atoms, is activated by exposure to microwaves by a microwave generating source, and then introduced into the chamber. The temperature of the lid section is raised by heating the lid section by means of a heater plate, or halting supply of cooling water to the lid section from the water supply source, whereby the temperature of the shower head during cleaning is raised above the temperature at which film formation onto the wafer is performed.
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Citations
13 Claims
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1. A cleaning method for a vapor phase deposition apparatus for forming film onto a substrate by introducing film forming gas into a chamber via a shower head, comprising:
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a step of activating a cleaning gas including a compound containing fluorine atoms by exposure to microwaves, and introducing the radicals of said cleaning gas into said chamber; and
a step for raising the temperature of said shower head to a temperature greater than that used when forming film on said substrate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vapor phase deposition apparatus comprising:
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a chamber comprising a shower head and a circulation passage for passing a cooling medium for cooling said shower head;
a feed passage connected to one end of said circulation passage and leading to said circulation passage, along which said cooling medium travels;
a return passage connected to the other end of said circulation passage and exiting from said circulation passage, along which said cooling medium travels;
a bypass passage connecting said feed passage and said return passage; and
a control valve for controlling the flow of said cooling medium travelling in said bypass passage. - View Dependent Claims (8, 9, 10)
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11. A vapor phase deposition apparatus comprising:
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a chamber having a shower head for introducing film forming gas; and
a heater for changing the temperature of said shower head. - View Dependent Claims (12, 13)
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Specification