Movable Heat Shielding for Faster Substrate Thermal Cycling
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Solution Overview
Problem
Existing thermal treatment devices for substrates, such as those used for depositing SiC, face challenges in minimizing cycle time due to inefficient heat management during heating and cooling phases, leading to prolonged processing times and increased energy consumption.
Innovation Solution
A shielding apparatus with movable shielding elements that can be adjusted between two operating positions to control the flow of heat, maximizing or minimizing heat shielding effect, allowing for flexible temperature control and reduced cycle times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a shielding apparatus is used to reduce heat flow from the substrate during heating, then energy consumption is reduced, but the device complexity increases
Solution Approach 1:
The shielding apparatus is divided into multiple shielding elements that can be independently positioned. These segmented elements can be selectively placed in the heat transfer path between the substrate and cold area, allowing precise control of heat flow while maintaining a relatively simple overall structure. The segmentation enables the system to achieve effective heat shielding without requiring a single complex moving mechanism.
2Manufacturing precision
If the shielding apparatus is made adjustable between multiple positions, then temperature control precision is improved, but the ease of operation deteriorates
Solution Approach 1:
The shielding elements are designed to be movable between different positions, allowing the heat shielding effect to be dynamically adjusted. This dynamic positioning enables precise temperature control during substrate processing by optimizing the heat flow management at different stages. The movable design maintains ease of operation through simple mechanical means while achieving improved temperature control precision.
3Productivity
If multiple shielding elements are used to optimize heat management, then productivity is improved, but the device complexity increases
Solution Approach 1:
The shielding apparatus comprises multiple shielding elements that can be independently positioned and adjusted. This segmentation allows each element to be optimized for specific heat flow paths, improving overall heat management efficiency and thus productivity. The modular segmented structure achieves enhanced performance without requiring a single complex integrated component.
Solution Approach 2:
The multiple shielding elements serve multiple functions: they can be positioned to shield heat during heating phases, removed during cooling phases, and adjusted to control heat flow magnitude. This multi-functionality allows a single apparatus to handle various thermal management requirements, improving productivity without proportionally increasing device complexity.
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
The solution enables efficient heat management by optimizing heating and cooling phases, reducing cycle times and energy consumption while maintaining precise temperature control of the substrate.
Implementation Method 1
a shielding apparatus arranged in the heat transfer path, which is adjustable between a first and a second operating position, wherein the shielding apparatus exerts a greater shielding effect on the flow of heat in the first operating position than in the second operating position
Implementation Method 2
The process chamber is heated to a process temperature using a heating apparatus
Implementation Method 3
a heating apparatus arranged in a reactor housing for heating the substrate
Implementation Method 4
a cold area is arranged in the reactor housing in such a way that a flow of heat flows from the heated substrate along a heat transfer path to the cold area
Data Source
AI summary
A device for thermally treating a substrate with a heating apparatus arranged in a reactor housing to heat the substrate. During heating of the device, a flow of heat flows from the heating apparatus to a substrate, and during cooling, a flow of heat flows from the substrate to a cold region. To minimize the heating and cooling time, a shielding apparatus for influencing the flow of heat is provided that can be adjusted between a first and a second operating position. The shielding apparatus has several shielding elements that can be moved relative to one another.