Data processing: generic control systems or specific application – Specific application – apparatus or process – Article handling
Reexamination Certificate
2005-01-18
2005-01-18
Tran, Khoi H. (Department: 3651)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Article handling
C700S259000, C414S936000, C414S941000, C901S046000, C901S047000
Reexamination Certificate
active
06845292
ABSTRACT:
A transfer apparatus (42) for a semiconductor processing system includes a transfer member (44) having a support portion (48) to place a target substrate (W) thereon, and a drive unit (68) for driving the transfer member (44). A reference mark (54) is disposed adjacent to the support portion (48). The target substrate (W) has optically observable first and second portions (84, 86). A storage section (63) stores a normal image that shows a positional correlation between the reference mark (54) and the first and second portions (84, 86), obtained when the target substrate (W) is placed on the support portion (48) at a normal position. An image pick-up device (62A) takes a detection image that shows a positional correlation between the reference mark (54) and the first and second portions (84, 86), when the transfer member (44) transfers the target substrate (W). An information processing unit (62B) obtains a misalignment amount of the target substrate (W) relative to the normal position, based on the normal image and the detection image.
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Li Yicheng
Sha Lin
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Tokyo Electron Limited
Tran Khoi H.
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