Plasma Control Unit Layout for Adjustable Substrate Treatment
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Solution Overview
Problem
Existing substrate treating apparatuses using plasma have difficulty in changing the characteristics of the electric field and plasma without altering the positions of fixed components, making it challenging to efficiently treat substrates and perform maintenance on components exposed to plasma.
Innovation Solution
A substrate treating apparatus with a plasma control unit that includes a dielectric plate and a metal plate, where the metal plate is electrically connected to a top electrode unit, allowing for easy attachment and detachment, enabling the adjustment of plasma characteristics by varying the distance between the metal plate and the support plate, and facilitating maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components forming the electric field are fixedly installed to maintain constant gaps with the substrate, then the reliability of the electric field configuration is improved, but the adaptability to change plasma characteristics is worsened
Solution Approach 1:
The top electrode unit is divided into a fixed electrode plate and a movable plasma control unit. The plasma control unit can be detached and replaced to change plasma characteristics while the electrode plate remains fixed, resolving the contradiction between stable configuration and adaptability.
Solution Approach 2:
The plasma control unit is designed to be movable and replaceable relative to the electrode plate. This dynamic design allows the system to switch between different plasma control configurations to achieve different plasma characteristics while maintaining overall system reliability.
2Ease of repair
If the plasma control unit is made detachable and replaceable, then the ease of maintenance is improved, but the device complexity is worsened
Solution Approach 1:
The plasma control unit is segmented as a separate replaceable module that can be easily detached from the electrode plate. This segmentation enables simple maintenance operations while the modular design actually reduces overall complexity compared to fully integrated fixed designs.
Solution Approach 2:
The standardized interface between the plasma control unit and electrode plate allows different plasma control units to be interchangeably mounted on the same electrode plate, enabling universal maintenance procedures and reducing the need for specialized tools or procedures for each component.
3Adaptability or versatility
If the metal plate thickness is varied to adjust plasma characteristics, then the adaptability of plasma treatment is improved, but the manufacturing precision requirements are worsened
Solution Approach 1:
Different plasma control units are designed with different metal plate thicknesses to create locally optimized plasma characteristics for different treatment needs. Each unit maintains precise gap control through its specific thickness design, allowing tailored plasma properties without compromising overall manufacturing precision standards.
Solution Approach 2:
The metal plate thickness is used as a key parameter to control the gap distance between the plasma control unit and substrate. By changing this physical parameter through unit replacement rather than adjustment, the system achieves precise plasma characteristic variation while maintaining consistent manufacturing tolerances.
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
This configuration allows for efficient substrate treatment and easy maintenance by enabling the modification of plasma characteristics and maintaining consistent gaps, enhancing the apparatus's operational flexibility and reliability.
Implementation Method 1
A plasma refers to an ionized gas state made of ions, radicals, and electrons, and is produced by a very high temperature, a strong electric field, or a high-frequency electromagnetic field
Implementation Method 2
When the power is applied to the support plate, an electric field is formed at the edge region of the substrate supported on the support plate by an electrical interaction between the support plate, the bottom edge electrode, the top edge electrode, the metal plate, and electrode plate
Data Source
AI summary
The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes a support plate for supporting a substrate and applying a power; a plasma control unit placed above the support plate to face the support plate; and a top electrode unit positioned to surround the plasma control unit, and wherein the plasma control unit includes: a dielectric plate positioned to face a top surface of a substrate mounted on the support plate; and a metal plate positioned above the dielectric plate, and the metal plate is electrically connected to the top electrode unit.