Adaptive Sputtering Source Alignment for Uniform 3D Coating
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Solution Overview
Problem
Existing methods for coating 3D substrates with curved surfaces in a vacuum chamber result in non-homogeneous coatings due to varying spacing and angle between the sputtering source and the substrate during linear movement, leading to compromised layer quality.
Innovation Solution
A device with a sputtering source that has two degrees of freedom, allowing stepless adaptation of spacing and inclination angle to match the substrate's surface normal, ensuring constant distance and alignment during translational movement, utilizing a pivoting-tube drive and linear displacement for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed sputtering source is used for coating 3D substrates with curved surfaces during linear movement, then the coating process is simple, but the spacing and angle between the source and substrate vary, resulting in non-homogeneous coating
Solution Approach 1:
The sputtering source is transformed from a fixed position to a dynamically adjustable position with two degrees of freedom. The source can continuously change its spacing to the substrate and its inclination angle during the coating process, allowing it to adapt to the varying geometry of 3D substrates and maintain constant coating quality throughout the linear movement.
Solution Approach 2:
The patent changes the physical parameters of the sputtering source system by introducing two adjustable degrees of freedom: spacing distance and inclination angle. These parameters are continuously modified during the coating process to match the substrate geometry, transforming a static coating system into a dynamically adaptable one that maintains optimal coating conditions.
2Manufacturing precision
If the sputtering source spacing and angle are continuously adapted during linear passage of 3D substrates, then homogeneous coating is achieved, but the device complexity increases
Solution Approach 1:
The sputtering source incorporates two degrees of freedom that enable continuous dynamic adjustment during the linear passage of substrates. This dynamic capability allows the source to maintain constant spacing and optimal inclination angle relative to the substrate surface, ensuring uniform layer quality across the entire coating area despite the substrate's 3D geometry.
3Device complexity
If a fixed sputtering source is used, then the device structure is simple, but the coating homogeneity on curved surfaces deteriorates
Solution Approach 1:
The mounting structure of the sputtering source is redesigned from a fixed configuration to a dynamic system with two degrees of freedom. This allows the source to continuously adjust both its distance from the substrate and its angular orientation, enabling it to follow the contours of curved 3D substrates and maintain homogeneous coating conditions throughout the linear movement process.
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 enables homogeneous coating of 3D substrates with highly curved surfaces by maintaining constant spacing and alignment, ensuring uniform layer quality even on complex geometries, allowing for continuous and automatic adjustment during the coating process.
Implementation Method 1
a sputtering source, such as a planar source or a tube or double-tube source
Data Source
AI summary
A method and a device are provided for homogeneously coating surfaces of 3D substrates in a vacuum chamber which has a sputtering source, such as a planar source or a tube or double-tube source, wherein individual substrates, with a curved substrate surface directed toward the sputtering source, are able to be moved past said source in a translational manner. The sputtering source is fastened to a chamber wall within a vacuum chamber so as to have two degrees of freedom such that the sputtering source is able to be set both in terms of its spacing to a surface to be coated of a substrate, which is moved past in front of said sputtering source in a translational manner, and with respect to the surface normal of the surface to be coated proceeding from a fixed point such that the surface normal deviation is 0° at all times.