Horizontal ALD Chamber Layout for Lower-Height Wafer Handling
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Solution Overview
Problem
Existing film-forming devices based on atomic layer deposition (ALD) face challenges with increased size in the height direction, making it difficult to place and remove workpieces, limiting installation environments and posing safety risks during maintenance.
Innovation Solution
A horizontal-axis film-forming device with a movable and pivotable chamber, a removably attached workpiece holder, and a heater, allowing for easy placement and removal of workpieces while reducing the device's height and enhancing safety through controlled pressure differences between inner and outer chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of workpieces to be processed is increased in a vertical processing container, then the processing capacity is improved, but the size of the film-forming device increases in the height direction, making it difficult to place and remove workpieces and limiting installation environments
Solution Approach 1:
The patent transitions from a vertical chamber configuration to a horizontal chamber configuration. This dimensional change allows workpieces to be arranged in multiple stages horizontally rather than vertically, thereby increasing processing capacity without increasing the height of the device. The horizontal arrangement enables easier access for placing and removing workpieces while maintaining high productivity.
Solution Approach 2:
The patent inverts the conventional vertical chamber orientation by using a horizontal chamber. This inversion fundamentally changes the spatial arrangement of workpieces and the operational workflow, allowing the chamber to be opened from the side rather than from the top, thus facilitating easier workpiece handling while accommodating multiple workpieces in the horizontal direction.
2Productivity
If the size of the film-forming device is increased in the height direction to process more workpieces, then the processing capacity is improved, but the need to search for a building with a higher ceiling arises, limiting installation environments
Solution Approach 1:
By changing the chamber orientation from vertical to horizontal, the patent enables the device to fit within standard ceiling heights while maintaining the ability to process multiple workpieces. The horizontal configuration distributes the workpiece capacity across the horizontal plane rather than extending vertically, thus improving adaptability to various installation environments with standard ceiling constraints.
3Productivity
If the chamber size is increased in the height direction to accommodate more workpieces, then the processing capacity is improved, but maintenance and operations requiring worker access underneath the chamber become dangerous
Solution Approach 1:
The patent inverts the chamber orientation from vertical to horizontal, which fundamentally improves safety during maintenance operations. With the chamber opening horizontally rather than vertically from the top, workers can access the chamber from the side at a convenient height, eliminating the need to work underneath a tall vertical chamber and thereby removing the associated safety hazards.
4Productivity
If a vertical chamber configuration is used to process multiple workpieces, then the processing capacity is improved, but the device complexity increases due to the need for vertical space and access mechanisms
Solution Approach 1:
The patent simplifies the overall device structure by adopting a horizontal chamber configuration. This dimensional change eliminates the need for complex vertical support structures, height-adjustable mechanisms, and top-down access systems required in vertical configurations. The horizontal setup allows for simpler, more straightforward workpiece loading and unloading mechanisms, thereby reducing device complexity while maintaining multi-workpiece processing capacity.
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
Enables easy handling and maintenance of workpieces, reduces the device's height, and improves safety by allowing for horizontal movement and pivoting of the chamber, while maintaining a stable deposition environment.
Implementation Method 1
a heater that heats an inside of the chamber
Implementation Method 2
a chamber (10) having a horizontal central axis, capable of maintaining a vacuum
Data Source
AI summary
A film-forming device which includes a chamber having a horizontal central axis, capable of maintaining a vacuum, and movable along the horizontal central axis, the chamber including an inner chamber and an outer chamber that houses the inner chamber; a workpiece holder that aligns and holds workpieces to be processed in multiple stages in the inner chamber; and a heater that heats an inside of the chamber.