Patent ID: 8033770
Filing Date: 2011-10-11
Classification: H01L,Y10S

Abstract:
1. A vacuum processing apparatus comprising: a plurality of vacuum processing chambers configured to subject a sample to vacuum processing; a vacuum carriage configured to carry the sample into and out of the vacuum processing chamber; a switchable chamber configured to be switched between atmosphere and vacuum which enables carrying of the sample into and out of the vacuum processing chamber; a cassette support configured to support in atmosphere a plurality of cassettes configured to house samples; a waiting cassette support configured to move vertically or horizontally and to support in atmosphere a waiting cassette that differs from the cassette supported on the cassette support, the waiting cassette being configured to have a housing capacity for housing at least a number of samples, the number being obtained by subtracting the number of samples being processed in the vacuum processing chamber from the number of samples capable of being housed in one of the plurality of cassettes; an atmospheric carriage configured to move vertically or horizontally to take out a sample from either a given cassette supported on the cassette support or a waiting cassette supported on the waiting cassette support; and a controller configured to control at least the atmospheric carriage, the vacuum carriage, and the switchable chamber so as to (1) carry an unprocessed sample taken out of the given cassette via the atmospheric carriage, the switchable chamber, and the vacuum carriage into the vacuum processing chamber, (2) carry the processed sample out of the vacuum processing chamber to a waiting cassette that differs from the given cassette via the vacuum carriage, the switchable, and the atmospheric carriage, and (3) return the processed sample from the waiting cassette to the same given cassette in a state where no unprocessed sample exists in the same given cassette via the atmospheric carriage, so as to prevent the processed sample and the unprocessed sample from being mixed in the same given cassette while processing a sample in the vacuum processing chamber.