Method of and device for transporting semiconductor substrate in

Details Method of and device for transporting semiconductor substrate in Method of and device for transporting semiconductor substrate in

1993-04-15

1995-07-25

Trans, Vincent N.

Boots, shoes, and leggings

364468, 414222, G06F 1900

Patent

active

054368480

ABSTRACT:
A robot (12) takes a wafer (3f) out of an indexer (1) and then transports the same to a heat processing part (41). A wafer (3e), which has already introduced in the heat processing part (41) is took out thereof by the robot (5). The wafer (3f) is introduced in the heat processing part (41) after a waiting time (18a) so that an excess heat processing in the heat processing part (41) can be avoided. The wafer (3e) is transported to a processing part (43) and introduced therein by the robot (5). After the robot (5) repeats the similar processings in processing parts (13, 42, 44), it returns to the wafer transferring robot (12) to receive a next wafer. At that time, the robot (5) waits for a predetermined time thereby a cycle time is adjusted. After the waiting, the robot (5) takes out the wafer (3f), which has been introduced in the heat processing part (41), out thereof. Since the cycle time is set in common for different lots, the waiting times (18a, 18b) are set individually for each lot.

REFERENCES:
patent: 4664578 (1987-05-01), Kakehi
patent: 5110394 (1992-05-01), Ogawa

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