Patent ID: 8167521
Filing Date: 2012-05-01
Classification: H01L

Abstract:
1. A substrate transfer comprising: a support part configured to be locatable near a substrate of a predetermined diameter; and a grip mechanism disposed on the support part, the grip mechanism being capable of gripping and supporting a peripheral portion of the substrate, wherein the support part is provided with a non-contact sucking and holding part having a blow hole that blows a gas onto the substrate, and a suction hole that sucks the gas between the support part and the substrate so that a gas layer for preventing a warp of a central portion of the wafer is formed between the support part and the substrate, and the support part is provided with a rotation blow nozzle that rotates the substrate by blowing a gas onto the substrate in a tangential direction, and a positioning part that arranges the substrate in position by detecting a positioning mark on the substrate.