SUBSTRATE TRANSFER APPARATUS, SUBSTRATE TRANSFER METHOD, AND NON-TRANSITORY STORAGE MEDIUM

A substrate transfer apparatus to transfer a circular substrate provided with a cutout at an edge portion thereof, includes: a sensor part including three light source parts applying light to positions different from one another at the edge portion, and three light receiving parts paired with the li...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DOUKI Yuichi, MAEJIMA Hiromitsu, HAYASHI Tokutarou
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SEMICONDUCTOR DEVICES SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Beschreibung
Zusammenfassung:	A substrate transfer apparatus to transfer a circular substrate provided with a cutout at an edge portion thereof, includes: a sensor part including three light source parts applying light to positions different from one another at the edge portion, and three light receiving parts paired with the light source parts; and a drive part for moving the substrate holding part, wherein the three light source parts apply light to the light receiving parts so that whether or not a detection range of the sensor part overlaps with the cutout of the substrate is determined on the basis of an amount of received light by each light receiving part, and when it is determined that there is an overlap at any position, positions of the edge portion of the substrate are further detected with the position of the substrate displaced with respect to the sensor part.