Interlayer Routing for High-Density PCB Component Attachment
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Solution Overview
Problem
The increasing complexity and reduced size of electronic components lead to closer connection distances on circuit boards, making it difficult to achieve high-density interconnects without increasing the number of circuit board layers, which results in thicker boards and higher production costs.
Innovation Solution
A process involving an intermediate layer with reduced thickness, formed with conductive tracks and structures between the electronic component's connection sites and the circuit board's surfaces, allowing for disentanglement without additional board layers, using techniques like embossing, subtractive, semi-additive, or laser structuring to create ultra-fine conductive paths for connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of connections to the circuit board is increased to accommodate more complex electronic components, then the functionality and complexity of the electronic system is improved, but the distances between individual connections are reduced, making disentanglement difficult
Solution Approach 1:
The patent introduces an intermediate layer positioned between the electronic component and the circuit board, creating a new spatial dimension for connection disentanglement. This intermediate layer with its reduced thickness allows connections to be routed through multiple layers without increasing the overall board thickness, effectively solving the problem of reduced connection distances by utilizing the Z-dimension (layer stacking) rather than being constrained to the XY-plane.
Solution Approach 2:
The intermediate layer acts as a mediator between the electronic component and the circuit board. It provides contact surfaces and conductive structures that facilitate the disentanglement of connections, allowing signals to be routed through multiple layers without requiring increased distances between connection points on the component itself.
2Adaptability or versatility
If additional circuit board layers are added to achieve disentanglement of connections, then the connectivity and functionality are improved, but the thickness of the circuit board and production costs increase
Solution Approach 1:
The patent employs a thin intermediate layer with reduced thickness compared to conventional circuit board layers. This thin film structure provides the necessary conductive pathways and contact surfaces for disentanglement while minimizing the increase in overall board thickness. The intermediate layer acts as a flexible intermediary that enables complex routing without the bulk of traditional multi-layer board constructions.
Data Source
AI summary
A method for fixing an electronic component on a printed circuit board, and contact-connecting the electronic component to the printed circuit board, the following steps are provided:—providing the printed circuit board having a plurality of contact and connection pads,—providing the electronic component having a number of contact and connection locations corresponding to the plurality of contact and connection pads, with a mutual spacing reduced in comparison with the spacing of the contact and connection pads, and—arranging or forming at least one interlayer for routing the contact and connection locations of the electronic component between the contact and connection pads and the contact and connection locations of the electronic component. A method for producing an interlayer for routing and a system having a printed circuit board and an electronic component using the interlayer for routing are also provided.