Heater Assembly with 180-Degree Bend for Uniform Thermal Control
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Solution Overview
Problem
Current high-throughput chemical treatment systems face low throughput due to the inefficiencies in processing multiple substrates simultaneously, particularly in dry, non-plasma processes like etching and cleaning, which require consistent and repeatable process characteristics across substrates.
Innovation Solution
A heater assembly with resistive heating elements configured in a 180-degree major-axis bend is integrated into the chemical treatment system to uniformly heat processing elements, such as gas injection assemblies and substrate holders, allowing for controlled temperature management across multiple substrates, thereby enhancing processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple substrates are processed simultaneously to increase throughput, then productivity improves, but manufacturing precision deteriorates due to difficulty in maintaining consistent process characteristics
Solution Approach 1:
The heater assembly is divided into multiple independent heating zones, each capable of independent temperature control. This segmentation allows different regions of the processing chamber to maintain optimal temperatures for different substrates simultaneously, ensuring process consistency while handling multiple substrates in parallel
Solution Approach 2:
Each heating zone is designed with localized temperature control capabilities, allowing different temperature profiles to be applied to different areas of the processing chamber. This enables precise temperature management for each substrate position, maintaining manufacturing precision across multiple substrates processed simultaneously
2Manufacturing precision
If heating elements are added to control temperature across multiple substrates, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The heater assembly uses a standardized modular design where identical heating elements and control mechanisms are reused across multiple zones. This multi-functional approach allows the same component design to serve multiple substrates simultaneously, improving temperature uniformity without proportionally increasing device complexity
Solution Approach 2:
The heating elements are positioned and configured to create uniform heat distribution across all substrate positions. By establishing equipotential temperature zones, the system achieves consistent thermal conditions across multiple substrates using a relatively simple and symmetric heater assembly design
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 significantly improves the throughput of chemical and thermal treatments by ensuring uniform temperature control across multiple substrates, optimizing the etching and cleaning processes, and increasing the efficiency of dry, non-plasma processes.
Implementation Method 1
a plurality of resistive heating elements coupled to the upper surface of the plate member
Data Source
AI summary
A heater assembly configured to elevate a temperature of a processing element in a chemical treatment system is described. The heater assembly may be configured to uniformly heat a large area processing element, such as a processing element that spans a plurality of substrates. Additionally, for example, the heater assembly may be configured to elevate a temperature of an upper assembly, a gas injection assembly, a substrate holder, a chamber wall, or any combination of two or more thereof.