Spin Coat Process for Z-Directed PCB Component Layers
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Solution Overview
Problem
Current methods for manufacturing Z-directed components for printed circuit boards face challenges in achieving high component densities and frequencies of operation, particularly for high-frequency circuits, and lack a scalable mass production process.
Innovation Solution
A spin coat process is developed to form Z-directed components using a liquid-based material, which involves depositing the material on a rotatable plate, spinning to level it, curing to form layers, and applying conductive materials to create stacked component layers that can be efficiently inserted into mounting holes in PCBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional manufacturing methods are used for Z-directed components, then component production can be achieved, but component density and frequency of operation are limited
Solution Approach 1:
The patent changes the physical state of the material from solid to liquid (slurry form) to enable spin coating processes, allowing for precise thickness control and high-density component formation while maintaining mass production capability through automated liquid deposition
Solution Approach 2:
The patent replaces traditional mechanical assembly methods with a liquid-based spin coating process, where mechanical stacking is substituted by centrifugal force-driven liquid deposition and curing, enabling both high precision and mass production
2Manufacturing precision
If component size is reduced to increase density, then component density improves, but manufacturing complexity increases
Solution Approach 1:
The patent merges multiple manufacturing steps (deposition, leveling, curing, conductive material application) into an integrated spin coating process, simplifying the overall manufacturing complexity while achieving high component density through precise liquid control
Solution Approach 2:
By changing materials to liquid slurry form and using centrifugal force parameters, the patent achieves precise control over small component dimensions without increasing manufacturing complexity, as the liquid flow naturally conforms to the desired geometry
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 process enables the mass production of Z-directed components, enhancing component densities and frequencies of operation for high-frequency circuits by allowing for precise formation and integration of conductive channels and insulating materials within the components.
Implementation Method 1
spinning the rotatable plate to level a top surface of the liquid based material
Implementation Method 2
curing the liquid based material to form the layer of the Z-directed component
Data Source
Figure 1~3F
Figure 4A~5H
Figure 6A~7
AI summary
A method for manufacturing a z-directed component for insertion into a mounting hole in a printed circuit board according to one example embodiment includes depositing a liquid based material onto a top surface of a rotatable plate. The top surface of the rotatable plate has at least one cavity formed thereon that defines the shape of a layer of the z-directed component. The rotatable plate is spun to level a top surface of the liquid based material in the at least one cavity. The liquid based material is cured to form the layer of the z-directed component. A conductive material is applied to at least one surface of the formed layer. The z-directed component is formed including a stack of component layers that includes the formed layer.