Patent ID: 8905700
Filing Date: 2014-12-09
Classification: H01L,Y10S

Abstract:
1. A transfer device comprising: a transfer arm configured to transfer an inspection object between a cassette for carrying the inspection object and an inspection chamber in which low-temperature inspection is performed; an arm-receiving compartment including a gateway via which the transfer arm is moved into or out of the arm-receiving compartment; a gas supply means including a first and a second supply part configured to supply a low-dew-point gas to the arm-receiving compartment from different locations; an air-tightly structured housing including therein an installation space in which the transfer arm and the arm-receiving compartment are disposed; and an up-down drive unit for lifting and lowering the transfer arm, wherein the first supply part is configured to supply the low-dew-point gas toward the inspection object introduced into the arm-receiving compartment by the transfer arm, wherein the low-dew-point gas is discharged from the arm-receiving compartment via the gateway, wherein the housing is configured such that the installation space and an inner space of the cassette are completely sealed from each other, wherein an opening and closing device disposed on a partition wall of a loading port holding the cassette allows communication of the inspection object between the inner space of the cassette and the installation space, and wherein the first supply part includes one or more gas ejecting holes configured to eject the low-dew-point gas onto an upper surface of the inspection object in a direction substantially vertical to the upper surface.