Conveying calibration device and wafer transmission system using the same

Abstract

The present invention discloses a transportation calibration device and a crystal wafer transmission system applying the same, comprising a terminal effector, wherein, the back end of the terminal effector is articulated with a manipulator, and the front end of the terminal effector is provided with a fetching device used to grab objects; the present invention also comprises a driving device which can drive the terminal effector to rotate around an articulated point and a calibration device used to position and calibrate a grabbed object; a fetching groove is arranged on the fetching device; the lower part of the fetching groove is provided with a positioning plane used for the center positioning to the grabbed object; a calibrator is arranged on the manipulator, which is used to define the circumferential angle of the grabbed object. The present invention is mainly used for a crystal wafer transmission system in the manufacturing process of semiconductor crystal wafers to transmit and calibrate the crystal wafers, is reliable in transportation, accurate in calibration, can be applied to both atmospheric environment and vacuum environment, cancels the transmission process of delivering the crystal wafers to the crystal wafer calibrator, reduces transmission path and time, improves the efficiency of production as well as transmission, and simplifies system equipment.

Description

technical field [0001] The invention relates to a semiconductor processing equipment, in particular to a transport calibration device and a wafer transmission system using the device. Background technique [0002] In the process of semiconductor processing, the wafer needs to be processed from the wafer chamber to the process reaction chamber. After the process is completed, the wafer is transferred back from the process reaction chamber to the wafer chamber. In the whole process, the atmospheric manipulator and the vacuum manipulator are the exercising parts and core components of the wafer transfer function, the central nerve of the wafer transfer system, and play the role of a transportation hub. [0003] As shown in Figure 1, it is the transmission process of wafers with a thickness of 200 mm or less; [0004] As shown in Figure 2, it is the transfer process of 300 mm wafer. [0005] It can be seen that in every link of wafer transfer and handling, the atmospheric / vacu...

AI Technical Summary

Problems solved by technology

However, due to the mechanical clamping of the edge of the wafer, and the wafer is thin and brittle, the possibility of damage to the edge of the wafer due to force is increased during the clamping process, which reduces reliability

[0012] Each of the above three methods has its own advantages and disadvantages, all of which have a certain impact on the reliability of wafer transmission. Moreover, they have a common disadvantage, that is, they cannot correct the calibration of wafer eccentricity and wafer notch. Definition of location

Therefore, in all three methods, a wafer aligner must be installed in the entire transmission system. Before the atmospheric / vacuum manipulator transports the wafer into the process reaction chamber for semiconductor processing, the target wafer must be sent to the wafer aligner for calibration and definition. The transfer process is too complicated

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