Semiconductor heat treatment equipment processing gate state detection device and detection method

Abstract

The invention discloses a semiconductor heat treatment equipment processing gate state detection device, which comprises upper distance measuring sensors and a detection unit. There are at least three upper distance measuring sensors arranged on the side face of the processing gate, located at the same height below the upper surface of the processing gate and distributed along the circumference of the processing gate. When the processing gate rises to the processing gate closing position in contact with a quartz tube flange at the lower end of the reaction tube of the semiconductor heat treatment equipment, the sensors measure the distance from the processing gate to the quartz tube flange. The detection unit, based on the measured values of the upper distance measuring sensors, detects the sealing state and / or the horizontal degree of the processing gate. With the invention, it is possible to rapidly and accurately detect the sealing degree and / or the horizontal degree of a processing gate in a technology process.

Description

Technical field [0001] The invention relates to a semiconductor heat treatment device, in particular to a detection device and a detection method for the state of a process door of a semiconductor heat treatment equipment. Background technique [0002] Semiconductor heat treatment equipment is a semiconductor equipment that performs heat treatment processes such as oxidation and annealing on silicon wafers. Generally speaking, the semiconductor vertical heat treatment equipment supports a quartz boat full of silicon wafers through a process door, and performs various heat treatment processes on the silicon wafers in a thermal reaction tube. Among them, the function of the process door is to close the thermal reaction tube to prevent the heat energy in the thermal reaction tube from being lost, as well as the leakage of process gas or the entry of external air. [0003] The level of the process door is the main indicator to measure the installation quality of the process door, whic...

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Problems solved by technology

[0004] When adjusting the levelness of the craft door, first pre-tighten the three springs according to past experience, and then rely on the level to adjust one by one. However, this method is very time-consuming for each installation and adjustment, and it is also very difficult to accurately ensure the levelness of the craft door.

In addition, since the buffer body does not have a ruler or any distance measuring tools, it is not convenient for real-time observation during installation and debugging

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