Apparatus and method for cleaning a bell jar in a barrel epitaxial reactor
First Claim
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1. An epitaxial cleaning apparatus comprising;
- a blower controller module electrically connected between a blower of an epitaxial deposition device having a reaction chamber, a blower and a plurality of plenum chambers for delivering cooling air from said blower to said reaction chamber, and a blower power source for controlling the speed of said blower; and
control module program code for controlling said blower controller module, said control module code adapted to be installed within a control module connected to said epitaxial deposition device for controlling the operation of said epitaxial deposition device and wherein said control module program code includes program code means to effect reading the temperature of a cooling air in an exhaust plenum of said epitaxial deposition device and maintaining the temperature of said cooling air within a predetermined temperature range by adjusting the speed of said blower.
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Abstract
An epitaxial cleaning apparatus has a blower controller module and controller module code. The blower controller module is connected between a blower of an epitaxial deposition device having a reaction chamber, a blower and a plurality of plenum chambers for delivering cooling air from the blower to the reaction chamber, and a blower power source for controlling the speed of the blower. The controller module code for controlling the blower controller module is installed within a control module connected to the epitaxial deposition device for controlling the operation of the epitaxial deposition device
37 Citations
13 Claims
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1. An epitaxial cleaning apparatus comprising;
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a blower controller module electrically connected between a blower of an epitaxial deposition device having a reaction chamber, a blower and a plurality of plenum chambers for delivering cooling air from said blower to said reaction chamber, and a blower power source for controlling the speed of said blower; and
control module program code for controlling said blower controller module, said control module code adapted to be installed within a control module connected to said epitaxial deposition device for controlling the operation of said epitaxial deposition device and wherein said control module program code includes program code means to effect reading the temperature of a cooling air in an exhaust plenum of said epitaxial deposition device and maintaining the temperature of said cooling air within a predetermined temperature range by adjusting the speed of said blower. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An epitaxial reactor in-situ cleaning kit comprising:
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a blower motor controller having a power input connection adapted to be connected to a power source, a power output connection adapted to be connected to a blower motor of an epitaxial reactor, and an input/output connection adapted to be connected to an epitaxial system control console; and
a program product comprising a computer usable medium having computer readable program code means embodied therein for controlling said blower motor controller to induce cleaning of an inside surface of a bell jar of an epitaxial reactor, said readable program code means in said program product comprising;
computer readable program code means for causing said system control console to effect initiating blower speed control to increase the temperature of the surface of said bell jar by reducing blower speed;
computer readable program code means for causing said system control console to effect reading the temperature of said surface of said bell jar and an air flow within an exhaust plenum and maintaining the temperature of said surface and said air flow within said exhaust plenum within a predetermined temperature range;
computer readable program code means for causing said system control console to effect introducing a reactant gas into said bell jar for reacting with a material deposited on the inside surface of said bell jar forming gaseous reactant by-products; and
computer readable program code means for causing said system control console to effect purging said bell jar with a purging gas. - View Dependent Claims (11, 12, 13)
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Specification