Printed Wiring Board With Partitioned Cavities For Component Positioning
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Solution Overview
Problem
Existing printed wiring boards with built-in electronic components face challenges in reliably positioning and connecting electronic components due to varying cavity widths, leading to potential contact failures and reduced design flexibility.
Innovation Solution
A printed wiring board design featuring a core substrate with first and second cavities of different widths, partitioned by projection structures, and reinforced resin layers, allowing for precise positioning and reliable connection of electronic components through via conductors, while maintaining flexibility in cavity design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cavities of different widths are used to accommodate electronic components, then adaptability to different component sizes is improved, but positioning reliability deteriorates due to varying cavity dimensions
Solution Approach 1:
The patent applies local quality by introducing projection structures with specific widths within cavities of different sizes. Each projection structure has a width specifically designed to match the size of the electronic component it accommodates, providing localized precise positioning support. This allows the overall cavity to be adaptable to different component sizes while the local projection structures ensure reliable positioning for each specific component.
2Manufacturing precision
If projection structures are added to partition electronic components, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing each cavity into multiple regions using projection structures. These projections partition the cavity space to create distinct positioning zones for different electronic components. This segmentation approach achieves precise positioning by creating separate functional regions within the overall cavity structure, allowing multiple components to be accurately positioned without requiring entirely separate cavities.
3Adaptability or versatility
If cavity widths are varied to fit different components, then adaptability is improved, but structural strength deteriorates
Solution Approach 1:
The patent applies local quality by introducing projection structures with specific widths within cavities of different sizes. Each projection structure has a width specifically designed to match the size of the electronic component it accommodates, providing localized precise positioning support. This allows the overall cavity to be adaptable to different component sizes while the local projection structures ensure reliable positioning for each specific component.
Data Source
AI summary
A printed wiring board includes a substrate having first and second cavities, first electronic components accommodated in the first cavity, second electronic components accommodated in the second cavity, and a build-up layer formed on the substrate and including an insulating interlayer such that the interlayer is covering the first and second cavities. The substrate has a first projection structure partitioning the first components in the first cavity and a second projection structure partitioning the second components in the second cavity, and the first and second cavities and the first and second projection structures are formed in the substrate such that T1<T2 and W1<W2 are satisfied where T1 represents distance between the first components, T2 represents distance between the second components, W1 represents width of edge of the first structure in the first cavity, W2 represents width of edge of the second structure in the second cavity.