Flexible Semiconductor Substrate With Nested EMC Shielding
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Solution Overview
Problem
Current PCB module encapsulation methods using epoxy molding compounds are not cost-effective and convenient for fabricating substrate arrangements with integrated circuits, particularly when requiring flexible and shaped semiconductor substrates with multiple electrical connections.
Innovation Solution
A substrate arrangement featuring a semiconductor substrate with contact portions and electrical connectors, including conductive and surface mount devices, connected via metallic interconnects and conductive traces, allowing for flexible configuration and reinforcement with encapsulants, suitable for applications like hearing aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If epoxy molding compound is used to encapsulate PCB modules with integrated circuits, then protection from external impacts is improved, but manufacturing cost and fabrication convenience deteriorate
Solution Approach 1:
The patent divides the encapsulation structure into multiple segments: the PCB substrate, multiple integrated circuits mounted on different sides, and individual EMC molding compounds for each IC. This segmentation allows flexible PCB routing and simplified manufacturing compared to monolithic encapsulation
Solution Approach 2:
The patent implements nested encapsulation where EMC molding compounds encapsulate individual integrated circuits, which are themselves mounted on the PCB substrate. The flexible PCB then encapsulates multiple such nested IC-EMC units, creating layered protection with improved manufacturing flexibility
2Adaptability or versatility
If flexible semiconductor substrates with multiple electrical connections are used, then adaptability and electrical connectivity are improved, but device complexity increases
Solution Approach 1:
The flexible PCB serves multiple functions simultaneously: it provides mechanical support for multiple ICs, establishes electrical connections through traces and contact portions, enables signal routing between ICs on opposite sides, and provides structural flexibility for compact packaging. This multi-functionality reduces the need for additional components
Solution Approach 2:
The patent utilizes the flexible PCB to create three-dimensional electrical connections by routing traces through bent and folded portions of the substrate. This allows contact portions on opposite sides of the PCB to be electrically connected, effectively adding a vertical dimension to the electrical interconnect architecture
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 provides a cost-effective and convenient method for fabricating substrate arrangements with enhanced electrical connections and EMC shielding, suitable for diverse applications including hearing aids, by using flexible semiconductor substrates and conductive materials.
Implementation Method 1
an electrical connector configured to connect the first contact portion and the second contact portion
Implementation Method 2
The substrate arrangement further includes a first metallic interconnect disposed between the first contact portion and the electrical connector
Data Source
AI summary
In an embodiment, a substrate arrangement is provided. The substrate arrangement may include a semiconductor substrate including a first contact portion and a second contact portion on a first surface of the semiconductor substrate, wherein the semiconductor substrate is arranged such that the first contact portion and the second contact portion face each other. The substrate arrangement may further include an electrical connector configured to connect the first contact portion and the second contact portion.