Patent ID: 9008817
Filing Date: 2015-04-14
Classification: H01L

Abstract:
1. A substrate positioning apparatus that determines a position of a substrate being processed, the apparatus comprising: a substrate disposing part configured to dispose a substrate being processed, wherein the substrate being processed is round with a top surface, bottom surface, and peripheral surface, and with a diameter varying from that of a reference substrate by a deviation amount; a substrate carrying mechanism configured to dispose the substrate being processed on the substrate disposing part; a first positioning mechanism that includes a first reference part configured to contact a first location on the peripheral side of the substrate being processed when it is disposed on the substrate disposing part; a second positioning mechanism that includes a second reference part configured to contact a second location on the peripheral side of the substrate being processed when it is disposed on the substrate disposing part; a first driver configured to drive the first positioning mechanism; a second driver configured to drive the second positioning mechanism; and a controller configured to control the first driver and the second driver, wherein the second reference part includes an elastic part, a movable part that moves with the expansion or contraction of the elastic part, and a detector that detects a distance between the detector and the movable part, such that when the reference substrate is centered on the substrate disposing part, the first driver moves the first positioning mechanism to a first reference position such that the first reference part contacts the first location on the peripheral side of the reference substrate, then the second driver moves the second positioning mechanism to a second reference position such that the second reference part contacts the second location on the peripheral side of the reference substrate and the elastic part is compressed such that it applies a force to the reference substrate in a direction of the first driver, with the distance between the detector and the movable part establishing a predetermined reference distance, and wherein the controller is configured to: