Plasma O-Ring Test Chamber for Fast, Accurate Resistance Evaluation
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Solution Overview
Problem
Existing methods for evaluating O-ring plasma resistance characteristics either provide inaccurate results when directly exposed to plasma or require lengthy evaluations in actual substrate processing apparatuses, leading to inefficient maintenance cycles and decreased process yield.
Innovation Solution
A plasma-resistant O-ring evaluation unit and device that allows for mounting multiple O-rings in a controlled environment, with adjustable plasma gas penetration paths and sealing mechanisms to simulate actual conditions, enabling rapid and accurate plasma resistance testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the O-ring is directly exposed to the plasma environment for evaluation, then the evaluation process is simple and quick, but the results do not accurately reflect the plasma resistance characteristics in actual process environment
Solution Approach 1:
The patent introduces a test chamber as an intermediary device that simulates the actual substrate processing apparatus environment. The O-ring is mounted in the test chamber which is then placed in the plasma processing apparatus, allowing the O-ring to be evaluated under conditions that closely mimic real operational environments while still enabling controlled testing.
Solution Approach 2:
The patent modifies the testing parameters by controlling the plasma exposure conditions in the test chamber, including plasma power, gas flow rates, and exposure duration. These parameter adjustments allow for accelerated testing while maintaining representative conditions, thus reducing evaluation time without sacrificing accuracy.
2Measurement precision
If the O-ring is mounted in the substrate processing apparatus and the actual apparatus is operated to indirectly expose the O-ring to plasma, then the plasma resistance characteristics are accurately evaluated, but the evaluation time becomes very long
Solution Approach 1:
The patent extracts the O-ring evaluation function from the actual substrate processing apparatus by using a separate, dedicated test chamber. This test chamber can be quickly installed and removed, allowing for rapid evaluation of multiple O-ring samples without requiring operation of the full substrate processing apparatus, thus dramatically reducing evaluation time while maintaining testing accuracy.
Solution Approach 2:
The patent prepares the test chamber in advance with pre-installed O-ring mounting positions and sealing configurations that replicate the actual apparatus geometry. This preliminary setup allows O-rings to be quickly tested as soon as the chamber is installed in the plasma apparatus, eliminating the need for time-consuming in-situ mounting and configuration during the evaluation process.
3Measurement precision
If multiple different O-rings are evaluated separately in the substrate processing apparatus, then each O-ring's characteristics are thoroughly assessed, but the total evaluation time increases significantly
Solution Approach 1:
The test chamber is designed with universal mounting capabilities that can accommodate multiple different O-ring sizes, materials, and configurations simultaneously. The chamber includes multiple sealing surfaces and mounting positions that can hold various O-ring types, allowing comprehensive evaluation of multiple O-ring candidates in a single testing session, thus increasing productivity without compromising evaluation completeness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and precise determination of plasma resistance characteristics for various O-rings, reducing evaluation time and maintaining apparatus integrity by simulating real-world plasma exposure effectively.
Implementation Method 1
a plasma environment creation unit configured to create the plasma environment in the O-ring evaluation space of the chamber
Data Source
AI summary
Disclosed are a plasma-resistant O-ring evaluation unit and device, and more particularly technology capable of mounting a plurality of various O-rings in an O-ring evaluation unit and selectively exposing the O-rings to plasma in a plasma environment to quickly and accurately determine the plasma resistance characteristics of the plurality of various O-rings.