Patent ID: 11869788
Assignee: EBARA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A substrate processing apparatus comprising
a first processing unit and a second processing unit placed in upper and lower two stages, wherein
each of the first processing unit and the second processing unit has:
a plurality of processing tanks arranged in series;
a partition wall defining a conveyance space extending along an arrangement direction outside the plurality of processing tanks;
a conveyance mechanism placed in the conveyance space, the conveyance mechanism being configured to convey a substrate between the processing tanks along the arrangement direction; and
an air guide duct provided so as to extend along the arrangement direction in the conveyance space,
the air guide duct is connected with a fan filter unit,
each of the processing tanks is connected with an exhaust duct,
a plurality of openings are formed in the air guide duct, each opening facing a respective on of the plurality of processing tanks,
the conveyance space of the first processing unit and the conveyance space of the second processing unit are separated into upper and lower segments by the partition wall,
the fan filter unit is located at and connected with one lengthwise end of the air guide duct, and
each of the plurality of openings is formed to be relatively smaller in size as the openings proceed along the air guide duct in the direction towards said one lengthwise end of the air guide duct.