Error volume system and method for a pump
First Claim
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1. A method for compensating for errors in dispense volumes of a dispense system comprising:
- a pump controller determining a dispense volume amount based on a dispense recipe, wherein the pump controller is operable to control operation of a dispense pump, wherein the dispense system comprises the pump controller, the dispense pump, and one or more tubes downstream of the dispense pump;
the pump controller determining a value for a fluid property based on the dispense recipe;
the pump controller determining a correlation between the error volume of the dispense pump and the one or more tubes and the fluid property, wherein the correlation accounts for compliance in the dispense pump and the one or more tubes;
the pump controller determining an error volume amount based on the value of the fluid property and the correlation; and
the pump controller controlling a dispense motor to move a piston in the dispense pump to a position to account for the dispense volume amount determined from the recipe and the error volume amount to dispense the dispense volume amount of fluid from a nozzle.
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Abstract
A pumping system that accurately dispenses fluid using a pump, including reducing the error in the amount of a fluid a pump dispenses by correcting for the compliance of a dispense system.
204 Citations
25 Claims
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1. A method for compensating for errors in dispense volumes of a dispense system comprising:
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a pump controller determining a dispense volume amount based on a dispense recipe, wherein the pump controller is operable to control operation of a dispense pump, wherein the dispense system comprises the pump controller, the dispense pump, and one or more tubes downstream of the dispense pump; the pump controller determining a value for a fluid property based on the dispense recipe; the pump controller determining a correlation between the error volume of the dispense pump and the one or more tubes and the fluid property, wherein the correlation accounts for compliance in the dispense pump and the one or more tubes; the pump controller determining an error volume amount based on the value of the fluid property and the correlation; and the pump controller controlling a dispense motor to move a piston in the dispense pump to a position to account for the dispense volume amount determined from the recipe and the error volume amount to dispense the dispense volume amount of fluid from a nozzle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for compensating for system compliance in a dispense operation performed by a pump comprising:
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with a test pump installed in a test dispense system that comprises at least a test pump controller, the test pump, and one or more test pump tubes downstream of the test pump; the test pump controller performing a set of test dispenses with corresponding desired dispense volume amounts with a set of test fluids having various values for a fluid property, wherein the test pump controller is operable to control operation of the test pump; the test pump controller analyzing a set of actual dispense volume amounts of the test dispenses relative to the desired dispense volume amounts to determine a correlation between the fluid property and the error volume, wherein the correlation that accounts for compliance in the test dispense system, wherein the compliance comprises compliance of the test pump and compliance of the one or more test pump tubes; with a pump installed in a dispense system in a semiconductor manufacturing facility, wherein the dispense system comprises a pump controller, the pump, and one or more tubes downstream of the pump; the pump controller determining a desired manufacturing process dispense volume amount based on a dispense recipe for dispensing a process fluid, wherein the pump controller is operable to control operation of the pump; the pump controller determining a fluid property value for a process fluid based on the dispense recipe; the pump controller determining an error volume amount based on the fluid property value for the process fluid from the correlation between the fluid property and the error volume; and the pump controller controlling a dispense motor to move a piston to a position to account for the desired manufacturing process dispense volume amount determined from the recipe and the error volume amount to dispense the dispense volume amount of fluid from a nozzle to a wafer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification