Substrate processing system, substrate placing position adjusting method and storage medium
First Claim
1. A substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying means is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of:
- transferring a jig from the substrate carrying means to the substrate holding device;
measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity;
calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration measured by measuring means;
changing the position of the jig on the substrate holding device, repeating the measuring and calculating steps, changing the position of the jig on the substrate holding device again, repeating the measuring and calculating steps, and determining a position of the rotation center of the substrate holding device on the basis of eccentricities of two different jig placing positions and one of centrifugal acceleration imparted to a jig placing position other than the two jig placing positions and the eccentricity of the jig placing position other than the two jig placing positions; and
storing data on a position which coincides with the center of a substrate and the rotation center of the substrate holding device,wherein the step of determining the position of the rotation center of the substrate holding device places the jig on the substrate holding device at each of two different positions with its measuring position coincided with each of the two different positions, determines eccentricities of the two positions, draws two circles having radii equal to the eccentricities, respectively, and centers respectively at the two positions, places the jig at one of two intersection points of the two circles, and determines that the position of the intersection point is the rotation center of the substrate holding device if a measured centrifugal acceleration imparted to the measuring position of the jig placed at the intersection point is zero or lower than a predetermined value or that the other intersection point is the rotation center of the substrate holding device if the measured centrifugal acceleration is not zero or above the predetermined value.
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Abstract
A substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying unit is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of: transferring a jig from the substrate carrying unit to the substrate holding device; measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity; and calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration.
23 Citations
16 Claims
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1. A substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying means is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of:
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transferring a jig from the substrate carrying means to the substrate holding device; measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity; calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration measured by measuring means; changing the position of the jig on the substrate holding device, repeating the measuring and calculating steps, changing the position of the jig on the substrate holding device again, repeating the measuring and calculating steps, and determining a position of the rotation center of the substrate holding device on the basis of eccentricities of two different jig placing positions and one of centrifugal acceleration imparted to a jig placing position other than the two jig placing positions and the eccentricity of the jig placing position other than the two jig placing positions; and storing data on a position which coincides with the center of a substrate and the rotation center of the substrate holding device, wherein the step of determining the position of the rotation center of the substrate holding device places the jig on the substrate holding device at each of two different positions with its measuring position coincided with each of the two different positions, determines eccentricities of the two positions, draws two circles having radii equal to the eccentricities, respectively, and centers respectively at the two positions, places the jig at one of two intersection points of the two circles, and determines that the position of the intersection point is the rotation center of the substrate holding device if a measured centrifugal acceleration imparted to the measuring position of the jig placed at the intersection point is zero or lower than a predetermined value or that the other intersection point is the rotation center of the substrate holding device if the measured centrifugal acceleration is not zero or above the predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory computer readable storage medium encoded with instructions, which when executed by a computer, causes the computer to execute a substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying means is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of:
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transferring a jig from the substrate carrying means to the substrate holding device; measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity; calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration measured by measuring means; changing the position of the jig on the substrate holding device, repeating the measuring and calculating steps, changing the position of the jig on the substrate holding device again, repeating the measuring and calculating steps, and determining a position of the rotation center of the substrate holding device on the basis of eccentricities of two different jig placing position sand one of centrifugal acceleration imparted to a jig placing position other than the two jig placing positions and the eccentricity of the jig placing position other than the two jig placing positions; and storing data on a position which coincides with the center of a substrate and the rotation center of the substrate holding device, wherein the step of determining the position of the rotation center of the substrate holding device places the jig on the substrate holding device at each of two different positions with its measuring position coincided with each of the two different positions, determines eccentricities of the two positions, draws two circles having radii equal to the eccentricities, respectively, and centers respectively at the two positions, places the jig at one of two intersection points of the two circles, and determines that the position of the intersection point is the rotation center of the substrate holding device if a measured centrifugal acceleration imparted to the measuring position of the jig placed at the intersection point is zero or lower than a predetermined value or that the other intersection point is the rotation center of the substrate holding device if the measured centrifugal acceleration is not zero or above the predetermined value.
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9. A substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying means is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of:
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transferring a jig from the substrate carrying means to the substrate holding device; measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity; calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration measured by measuring means; changing the position of the jig on the substrate holding device, repeating the measuring and calculating steps, changing the position of the jig on the substrate holding device again, repeating the measuring and calculating steps, and determining a position of the rotation center of the substrate holding device on the basis of eccentricities of two different jig placing positions and one of centrifugal acceleration imparted to a jig placing position other than the two jig placing positions and the eccentricity of the jig placing position other than the two jig placing positions; and storing data on a position which coincides with the center of a substrate and the rotation center of the substrate holding device, wherein the determining the position of the rotation center of the substrate holding device includes determining that an intersection of three circles, each with a radius corresponding to an eccentricity calculated for three different jig placing positions, is the rotation center of the substrate holding device. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A non-transitory computer readable storage medium encoded with instructions, which when executed by a computer, causes the computer to execute a substrate placing position adjusting method which acquires data on a substrate placing position where a substrate carrying means is required to place a substrate on a substrate holding device capable of rotating about a vertical axis and included in a processing unit for processing a substrate substantially horizontally held by the substrate holding device, said substrate placing position adjusting method comprising the steps of:
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transferring a jig from the substrate carrying means to the substrate holding device; measuring centrifugal acceleration imparted to a measuring position in the jig when the substrate holding device holding the jig is rotated at a fixed angular velocity; calculating an eccentricity of the measuring position from a rotation center of the substrate holding device on the basis of a centrifugal acceleration measured by measuring means; changing the position of the jig on the substrate holding device, repeating the measuring and calculating steps, changing the position of the jig on the substrate holding device again, repeating the measuring and calculating steps, and determining a position of the rotation center of the substrate holding device on the basis of eccentricities of two different jig placing positions and one of centrifugal acceleration imparted to a jig placing position other than the two jig placing positions and the eccentricity of the jig placing position other than the two jig placing positions; and storing data on a position which coincides with the center of a substrate and the rotation center of the substrate holding device, wherein the determining the position of the rotation center of the substrate holding device includes determining that an intersection of three circles, each with a radius corresponding to an eccentricity calculated for three different jig placing positions, is the rotation center of the substrate holding device.
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Specification