Heat Insulating Unit for Semiconductor Processing Chamber
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Solution Overview
Problem
Conventional semiconductor manufacturing apparatuses face challenges in reducing power consumption due to inefficient heat management, leading to increased thermal losses and energy expenditure.
Innovation Solution
The implementation of a heat insulating unit with a plate-shaped member and a foamed insulating member on the top surface of the processing chamber, which suppresses heat radiation and improves thermal efficiency, comprising a configuration that allows for easy mounting and prevents deformation of the insulating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater is provided in the vicinity of the upper electrode to heat the processing gas, then the processing temperature can be maintained, but power consumption increases due to heat radiation losses from the processing chamber
Solution Approach 1:
The patent converts the harmful heat radiation that was being lost to the environment into a beneficial insulation layer by placing a heat insulating member on the top surface of the processing chamber. This member captures the radiated heat and redirects it back toward the processing space, transforming energy waste into useful thermal energy that maintains processing temperature and reduces power consumption.
Solution Approach 2:
The heat insulating member acts as an intermediary between the processing chamber and the external environment. It mediates heat transfer by blocking direct radiation loss while allowing the heating system to continue functioning normally, thereby reducing the energy burden on the heater without interfering with the processing temperature control.
2Loss of energy
If a heat insulating member is mounted on the top surface of the processing chamber, then thermal efficiency is improved and power consumption is reduced, but the mounting complexity increases
Solution Approach 1:
The heat insulating member is divided into multiple segments that can be separately mounted on the top surface of the processing chamber. This segmentation simplifies the mounting process by allowing each segment to be installed independently, reducing the overall mounting complexity while maintaining the complete heat insulation coverage for improved thermal efficiency.
Solution Approach 2:
The heat insulating member is designed with flexible mounting capabilities that adapt to the processing chamber's top surface. This dynamic design allows the insulating member to be easily adjusted and secured without requiring complex fixed installation structures, thereby reducing mounting complexity while ensuring effective heat insulation.
3Ease of operation
If the heat insulating member is made flexible to improve mounting ease, then ease of operation is improved, but the member may deform during mounting or operation
Solution Approach 1:
The heat insulating member incorporates localized reinforcement structures at critical areas to prevent deformation while maintaining flexibility in other regions. This local quality enhancement allows the member to be easily mounted without deformation, combining mounting ease with structural stability through targeted material or structural modifications.
Solution Approach 2:
The heat insulating member is constructed from composite materials that combine flexibility with structural integrity. These composite materials allow the member to be easily bent and mounted while maintaining sufficient rigidity to prevent deformation during operation, thus achieving both ease of operation and structural stability.
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 solution effectively reduces power consumption by enhancing thermal efficiency, as demonstrated by test results showing significant reductions in power usage during temperature rise, idle time, and process transfer, while maintaining operational stability.
Implementation Method 1
it is possible to suppress heat radiation from a top portion of the processing chamber where a large amount of heat would otherwise be radiated
Implementation Method 2
the heat insulating member may be a foamed insulating member. By using the foamed insulating member, heat radiation can be effectively suppressed
Data Source
AI summary
A semiconductor manufacturing apparatus is capable of reducing power consumption. The semiconductor manufacturing apparatus 1 includes a processing chamber 2 that has a top surface 2a and forms a processing space S therein; a mounting table 3 provided in the processing space S; an upper electrode 20 provided above the mounting table 3 to face the mounting table 3; heaters 35 and 36 provided around the upper electrode 20 and below the top surface 2a of the processing chamber 2 and configured to heat the upper electrode 20; and a heat insulating unit 50, mounted on the top surface 2a of the processing chamber 2, having a plate-shaped member 51 and a heat insulating member 52 that is provided on one main surface 51a of the plate-shaped member 51.