Temperature Compensation Module for Substrate Processing Uniformity
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Solution Overview
Problem
Substrate processing systems face temperature non-uniformities due to variations in manufacturing processes and system parameters, leading to undesirable effects on substrate characteristics such as non-uniform critical dimensions.
Innovation Solution
A system and method that utilize a temperature compensation module to store and retrieve adjustment values associated with process setpoint temperatures, calculating compensated temperatures to control the substrate processing system components, combining multiple compensation schemes to address temperature non-uniformities and other system variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If temperature control systems are implemented to maintain uniform substrate temperature, then substrate quality improves, but system complexity increases due to multiple compensation schemes and control parameters
Solution Approach 1:
The temperature control is divided into multiple independent compensation schemes (first compensation scheme and second compensation scheme), each addressing different aspects of temperature non-uniformity. This segmentation allows the complex problem of temperature control to be broken down into manageable, independent control modules that can be tuned separately.
Solution Approach 2:
The system dynamically adjusts temperature setpoints and compensation parameters based on process conditions. Multiple adjustment values are stored and retrieved based on the specific process setpoint temperature, allowing the system to adapt parameters to match operating conditions and optimize performance without requiring a completely different control architecture for each scenario.
2Measurement precision
If multiple compensation schemes are used to address different sources of temperature variations, then temperature control accuracy improves, but the difficulty of system calibration and setup increases
Solution Approach 1:
Adjustment values for multiple compensation schemes are pre-calculated and stored in memory before actual substrate processing. The system performs preliminary characterization and stores compensation data for different process setpoint temperatures, eliminating the need for complex real-time calibration during production and simplifying system setup.
Solution Approach 2:
The system uses stored compensation data and adjustment values that represent ideal compensation scenarios. By retrieving pre-determined adjustment values based on process setpoint temperature, the system copies proven compensation strategies without requiring re-calibration, reducing the difficulty of system setup and maintenance.
3Manufacturing precision
If real-time temperature compensation is implemented during substrate processing, then substrate quality improves, but processing time increases due to additional calculation and adjustment steps
Solution Approach 1:
Compensation values and adjustment parameters are pre-calculated and stored in memory before substrate processing begins. During actual processing, the system simply retrieves the appropriate pre-computed values based on the process setpoint temperature, avoiding time-consuming real-time calculations and maintaining high processing throughput.
Solution Approach 2:
The temperature compensation system operates autonomously by automatically retrieving stored compensation data and applying adjustments without requiring external intervention or complex real-time computations. The system self-manages the compensation process, minimizing overhead and maintaining processing efficiency.
Data Source
AI summary
A system includes memory that stores compensation information that associates process setpoint temperatures with respective adjustment values. The respective adjustment values include a first adjustment value corresponding to a first temperature compensation scheme and at least one second adjustment value corresponding to a second compensation scheme. A temperature compensation module receives a first process setpoint temperature, retrieves the compensation information from the memory based on the received first process setpoint temperature, calculates a first compensated temperature based on the received first process setpoint temperature, the first adjustment value, and the second adjustment value, and controls a temperature of a component of a substrate processing system according to the first compensated temperature.