Patent ID: 11972963
Assignee: SHANGHAI HUALI INTEGRATED CIRCUIT CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 4:
5. The wafer transfer module in the semiconductor manufacturing machine according to claim 4, wherein a distance X3 between the second transmitter and the third transmitter is (d2-d4)/2-d3/2-h1-h2, the first transmitter is located on an upper side of the wafer target position S in the vertical direction, the second transmitter is located on a lower side of the wafer target position S in the vertical direction, the third transmitter is located on an upper side of a predetermined position of the transfer arm in the vertical direction, the fourth transmitter is located on a lower side of the predetermined position of the transfer arm in the vertical direction, and the predetermined position of the transfer arm is a position where the transfer arm is located in the case of no deviation.