Multi-Station Plasma Chamber Control for Parallel Processing
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Solution Overview
Problem
Existing plasma processing technologies are limited in their ability to perform multiple processes simultaneously or in parallel, leading to inefficiencies in process efficiency.
Innovation Solution
A multi-station plasma processing system is introduced, comprising a processing chamber with multiple stations, each connected to a plasma generator and an inverter, allowing for independent control of plasma generation and process conditions across stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single processing chamber is used for plasma processing, then the system structure is simple, but only one kind of plasma processing can be performed at a time, limiting process efficiency
Solution Approach 1:
The processing chamber is divided into multiple independent stations (first processing station, second processing station, etc.), each capable of performing different plasma processing operations simultaneously. This segmentation allows parallel processing of multiple substrates with different process requirements, thereby improving overall productivity while maintaining a relatively compact system structure.
Solution Approach 2:
The processing chamber is designed as a multi-functional unit that can accommodate different types of plasma processing at different stations simultaneously. Each station can be configured for specific processes such as etching, deposition, or cleaning, allowing the single chamber to serve multiple purposes and handle diverse processing needs without requiring separate chambers for each process.
2Productivity
If multiple processing chambers are used to perform different plasma processes in parallel, then process efficiency improves, but system complexity and space requirements increase
Solution Approach 1:
Instead of expanding the system horizontally by using multiple separate processing chambers, the invention utilizes the vertical dimension by stacking multiple processing stations within a single chamber. This allows parallel processing capabilities to be achieved without proportionally increasing the system's footprint area, as multiple stations are arranged in a compact vertical configuration sharing common support infrastructure.
Solution Approach 2:
Multiple processing stations are merged into a single integrated processing chamber, sharing common vacuum systems, gas supply systems, and control infrastructure. This consolidation allows parallel plasma processing to be performed while minimizing the overall system space requirements, as the shared components eliminate the need for duplicate systems that would be required if separate chambers were used.
3Adaptability or versatility
If each processing station has independent plasma generation control, then process flexibility improves, but system complexity increases
Solution Approach 1:
Each plasma generation system is equipped with sensing units that monitor plasma characteristics and provide feedback to the control system. This feedback mechanism allows the controller to automatically adjust plasma generation parameters for each station to maintain optimal processing conditions, enabling flexible and adaptive control of multiple processes simultaneously while reducing the operational complexity through automated closed-loop control.
Solution Approach 2:
The plasma generation systems at different stations are designed with dynamic control capabilities, allowing independent adjustment of plasma parameters such as power, frequency, and gas flow rates. This dynamic control enables each station to be optimized for its specific process requirements while being managed through a coordinated control system that handles the complexity of multiple independent plasma sources.
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 parallel performance of multiple processes, enhancing overall process efficiency and flexibility in plasma processing applications.
Implementation Method 1
a first inverter configured to provide AC power to the first plasma generator... the first antenna structure is configured to receive AC power from the first inverter and induce plasma inside the first discharge tube
Data Source
AI summary
According to one embodiment of the present disclosure, there can be provided a plasma processing system for multi-station, the system including a processing chamber including at least two or more stations, one plasma generator provided for each of the stations, one inverter provided for each of the plasma generators, a sensing unit configured to measure an electric characteristic of each of the plasma generators, and a controller configured to acquire sensing data from the sensing unit and control each of the inverters.