Shield Box Ridge Groove Assembly for Semiconductor EMI Isolation
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Solution Overview
Problem
The challenge is to accurately test semiconductor devices without the interference of ambient radio-frequency (RF) and electromagnetic interference (EMI) noise, which is typically addressed by using large and costly shielding rooms, but these are not practical for efficient semiconductor device testing in manufacturing settings.
Innovation Solution
A portable shield box assembly that includes a shield box with specific ridge and groove configurations, a work press, and a shielding curtain to isolate the semiconductor device from external noise, allowing for testing without the need for a large shielding room, and enabling the shield box to be moved between locations without affecting test results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a shielding room is used to isolate semiconductor devices from external noise, then measurement accuracy is improved, but space occupation and cost increase
Solution Approach 1:
The patent divides the shielding function into modular components: a shield box with ridge-g groove structures that can be assembled together to create shielding enclosures. This segmentation allows the shielding capability to be distributed across multiple smaller units rather than requiring one large shielding room, thus reducing space occupation while maintaining measurement accuracy.
Solution Approach 2:
The shield box design features nested ridge and groove structures where ridges from one component fit into grooves of another component. This nesting approach allows multiple shielding layers to be compactly arranged within a smaller overall volume, providing effective noise isolation without requiring the extensive space of a traditional shielding room.
2Measurement precision
If a shielding room is used to isolate semiconductor devices from external noise, then measurement accuracy is improved, but cost increases
Solution Approach 1:
By segmenting the shielding system into standardized shield box modules with ridge-g groove interfaces, the patent enables mass production of identical components. This modularity reduces manufacturing costs compared to custom-built shielding rooms, while still providing the necessary measurement accuracy through proven shielding designs.
Solution Approach 2:
The patent uses repetitive copying of the same shield box design with standardized ridge and groove features. This replication approach allows for economical manufacturing through standardization and economies of scale, reducing the cost per unit of shielding effectiveness compared to custom shielding room construction.
3Productivity
If multiple testing apparatuses are deployed to improve productivity, then output increases, but space occupation and cost increase
Solution Approach 1:
The patent enables deployment of multiple independent shield box testing apparatuses that can be compactly arranged. Each shield box is a self-contained modular unit that can be stacked or placed adjacent to others, allowing high productivity through parallel testing while occupying minimal space compared to traditional shielding room configurations.
Solution Approach 2:
The standardized shield box design allows multiple testing apparatuses to be combined in a compact footprint. The ridge-g groove interface enables easy assembly and dense packing of multiple units, effectively merging their shielding functions in a space-efficient manner that supports high output without proportionally increasing space occupation.
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
The portable shield box effectively isolates semiconductor devices from ambient RF and EMI noise, allowing for accurate testing without the need for large shielding rooms, and enables multiple testing apparatuses to be used in a smaller space, thereby reducing costs and improving manufacturing efficiency.
Implementation Method 1
A portable shield box assembly that includes a shield box with specific ridge and groove configurations, a work press, and a shielding curtain to isolate the semiconductor device from external noise
Data Source
AI summary
A shield box includes a top portion, a bottom portion and a socket. The top portion defines an aperture and includes at least one first ridge and at least one first groove. The bottom portion includes at least one second ridge and at least one second groove. The first ridge of the top portion occupies a second space defined by the second groove of the bottom portion, and the second ridge of the bottom portion occupies a first space defined by the first groove of the top portion. The socket is disposed over the bottom portion and accessible through the aperture of the top portion.