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A screw component and a radio frequency processing device for its application

A technology of radio frequency processing and screws, which is applied in the direction of threaded fasteners, screws, bolts, etc., can solve the problems of affecting the path of radio frequency current, the stability of plasma processing, and the looseness of devices, so as to avoid changes in impedance and ensure no The effect of drifting and path stability

Active Publication Date: 2020-06-09
ADVANCED MICRO FAB EQUIP INC CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the plasma processing device generates a large amount of heat during the working process, the aluminum screws and the aluminum gaskets are more likely to loosen during the thermal cycle, and it is difficult to set the anti-loosening device due to the insufficient hardness of the aluminum gaskets. mechanism
The loosening of screws and gaskets will lead to the loosening of the fixed components, affecting the path of the RF current, resulting in changes in the impedance of the RF circuit, causing the condition of the RF discharge to drift, and affecting the stability of the plasma process.

Method used

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  • A screw component and a radio frequency processing device for its application
  • A screw component and a radio frequency processing device for its application
  • A screw component and a radio frequency processing device for its application

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Embodiment Construction

[0024] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] The invention discloses a screw assembly, which is mainly used in a radio frequency processing device, especially a plasma processing device. The screw assembly disclosed in the present invention is mainly used to realize the fixed connection of multiple device structures of the radio frequency processing device, and at the sam...

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Abstract

The invention provides a screw assembly, including a clamping plate and a stainless steel shrapnel. The clamping plate comprises an upper layer clamping plate, a lower layer clamping plate, and a clamping plate opening between the upper layer clamping plate and the lower layer clamping plate. A screw hole holding a screw is arranged through the clamping plate. The stainless steel shrapnel is in the clamping plate opening. The stainless steel shrapnel is provided with a round opening corresponding to the screw hole. The region of the stainless steel shrapnel, close to the round opening, and theregion close to the edge are in different planes. An acute angle is between the region of the stainless steel shrapnel, close to the round opening, and the upper layer clamping plate, and an acute angle is between the region of the stainless steel shrapnel, close to the edge region, and the lower layer clamping plate. The screw assembly is provided with an anti-loose mechanism, and can effectively ensure good contact of the screw assembly and a screw. The screw assembly ensures path stability of a radio frequency current loop, to prevent impedance of the radio frequency loop from changing, soas to ensure that a radio frequency discharge condition would not drift.

Description

Technical field [0001] The present invention relates to the technical field of radio frequency, in particular to the technical field of a screw assembly used in a radio frequency processing device to ensure the stability of a radio frequency signal. Background technique [0002] In the field of radio frequency processing technology, especially in the technology involving plasma etching, in order to ensure that the plasma has a strong directionality for the etching of the substrate, it is usually required to feed a higher power radio frequency signal into the plasma processing device To provide sufficient bias voltage, under high-power process conditions, a relatively large RF current will be generated in the plasma processing device. The bias radio frequency signal is usually applied to the susceptor for supporting the substrate. In order to form a current loop, the plasma processing device also needs to provide a channel that can ensure that the radio frequency current forms a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/24H01J37/32
CPCF16B39/24H01J37/32
Inventor 李双亮梁洁吴磊涂乐义
Owner ADVANCED MICRO FAB EQUIP INC CHINA
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