Inductor Coil-Via Layout for Better Filling and Connectivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inductor components face issues with degraded filling workability and connectivity between via wiring layers and coil wiring layers due to poor formation of via wiring layers when simultaneously filled with magnetic paste, leading to reduced volume and poor connectivity.
Innovation Solution
The inductor component design includes a body with a coil helically wound about an axis, featuring a via wiring layer with a non-overlapping end portion connected to the coil wiring layer, ensuring improved filling workability and securing a larger contact area between the via wiring layer and the coil wiring layer, thereby enhancing connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first hole and the second hole are simultaneously filled with paste to form the via wiring layer and coil wiring layer, then the manufacturing process is simplified, but the filling workability degrades and the via wiring layer volume decreases
Solution Approach 1:
The coil wiring layer is formed in advance before the via wiring layer. The coil wiring layer is first filled into the second hole, then the via wiring layer is filled into the first hole. This preliminary formation of the coil wiring layer prevents paste leakage and ensures proper filling of the via wiring layer, resolving the filling workability issue while maintaining the simultaneous filling process.
2Productivity
If the via wiring layer is simultaneously filled with coil wiring layer, then production efficiency is improved, but the connectivity between via wiring layer and coil wiring layer degrades
Solution Approach 1:
The coil wiring layer is formed in advance before the via wiring layer. This preliminary action ensures that the coil wiring layer is properly positioned and can effectively receive and conduct electrical signals to the via wiring layer, maintaining reliable connectivity while achieving simultaneous filling for high productivity.
3Ease of manufacture
If the via wiring layer is poorly formed due to degraded filling workability, then the manufacturing process remains simple, but the contact area between via wiring layer and coil wiring layer decreases
Solution Approach 1:
The coil wiring layer is formed in advance to create a proper receiving structure. This preliminary formation ensures that when the via wiring layer is filled, there is adequate contact area between the two layers, guaranteeing effective electrical connection while maintaining the simplicity of the simultaneous filling 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 design improves the filling workability and connectivity between the via wiring layer and the coil wiring layer, reducing the occurrence of voids and ensuring reliable electrical contact, even when misaligned during manufacturing.
Implementation Method 1
when the first hole and the second hole are simultaneously filled with paste to simultaneously form the first via wiring layer and the first coil wiring layer
Data Source
AI summary
An inductor component includes a body, a coil in the body and helically wound about an axis, and first and second outer electrodes disposed at the body and electrically connected to the coil. The axis is parallel to the bottom surface of the body and crosses the first and second side surfaces of the body. The coil includes first and second coil wiring layers laminated adjacent to each other in the axial direction, and a first via wiring layer that connects the first and second coil wiring layers. The first coil wiring layer has a first coil end portion. The first via wiring layer has a first via end portion. At least the first via end portion of the first via wiring layer is connected to a portion of the first coil wiring layer closer to the first coil end portion.