Leak Detection Apparatus for Wafer Electroplating
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Solution Overview
Problem
In semiconductor device manufacturing, horizontal wafer electroplating processes face challenges with leakages due to abrasions or heating-related issues in sealing components, leading to pollution and damage, as existing technologies lack effective leak detection methods to ensure air tightness during the electroplating process.
Innovation Solution
A leak detection apparatus and method that introduces a detection gas into the reaction chamber's second compartment, measures the gas pressure, and compares it to a reference value to determine if a leak occurs, suspending the electroplating process if leaks are detected to prevent contamination and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If horizontal electroplating is used to achieve high electroplating uniformity, then the electroplating quality is improved, but the requirements on air tightness of the electroplating device become very high, leading to leak risks
Solution Approach 1:
The patent applies preliminary action by performing leak detection before the electroplating process begins. The detection gas is introduced into the reaction chamber and pressure is measured to determine if leaks exist before electroplating starts, preventing potential contamination and damage that would occur if leaks were present during the actual electroplating process.
2Reliability
If sealing components are used to maintain air tightness, then the air tightness is improved, but abrasions or heating-related issues cause leakages over time
Solution Approach 1:
The patent implements feedback by continuously monitoring the pressure of the detection gas in the reaction chamber. The pressure detection device provides real-time feedback on whether leaks have occurred, allowing the system to identify sealing component failures when they happen and suspend electroplating operations to prevent damage, thereby extending the effective service life of the sealing components.
3Device complexity
If no leak detection system is installed to simplify the device, then the device complexity is reduced, but leakages cannot be detected, causing pollution and damage
Solution Approach 1:
The patent uses an intermediary approach by introducing a detection gas (such as nitrogen or air) as a mediator to detect leaks. This detection gas serves as an intermediary substance that allows the system to identify leaks through pressure changes without requiring complex detection equipment, thus adding minimal complexity while effectively preventing pollution and damage.
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
Ensures the air tightness of the reaction chamber, preventing electroplating solution leakage and subsequent pollution or damage, thereby ensuring the integrity of the wafer and electroplating device during the process.
Implementation Method 1
A detection gas is introduced to the second chamber, and a gas pressure value in the second chamber is detected
Data Source
AI summary
A leak detection apparatus and method and a wafer electroplating method are provided. An air tightness state of a reaction chamber in a wafer electroplating device is detected in advance before a wafer electroplating process is performed, namely whether leak occurs at the reaction chamber is judged by inputting a detection gas to the reaction chamber and detecting a gas pressure value of the detection gas, and whether to perform the wafer electroplating process is determined according to a judgment result.