High-Permeability Magnetic Shielding for IC Resonator Interference
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Solution Overview
Problem
Ultra-small resonant structures in integrated circuits are vulnerable to interference from stray electric, magnetic, and electromagnetic fields, which can disrupt the charged particle beams used for emitting and detecting electromagnetic radiation, despite vacuum packaging that protects against stray atomic particles.
Innovation Solution
The integration of high-permeability magnetic shielding materials, such as ferrites and nickel-iron alloys like MuMetal, around the ultra-small resonant structures to prevent interference from stray fields, with the shielding applied either around the entire IC or selectively to protect specific components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If magnetic shielding material is added around the IC or resonant structures, then protection from stray magnetic fields is improved, but device complexity increases
Solution Approach 1:
The patent employs a magnetic shielding can constructed from thin layers of high-permeability magnetic material. This thin-film approach provides effective magnetic field protection while minimizing the additional volume and structural complexity. The shielding can is designed as a simple cylindrical or rectangular enclosure that can be integrated into existing package designs without requiring complex internal structures.
2Object-affected harmful factors
If high-permeability magnetic material is used for shielding, then magnetic field screening effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The magnetic shielding can is constructed using composite material structures, combining high-permeability magnetic materials with non-magnetic support structures or coatings. This composite approach maintains superior magnetic shielding effectiveness while improving manufacturability through standardized fabrication processes. The design allows for integration with existing semiconductor packaging materials and techniques.
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 use of high-permeability magnetic shielding effectively screens static and low-frequency magnetic fields, ensuring the stability and accuracy of EMR emission and detection processes in ultra-small resonant structures within integrated circuits.
Implementation Method 1
The use of high-permeability magnetic shielding effectively screens static and low-frequency magnetic fields
Implementation Method 2
integration of high-permeability magnetic shielding materials, such as ferrites and nickel-iron alloys like MuMetal
Data Source
AI summary
A device includes at least one ultra-small resonant structure; and shielding constructed and adapted to shield at least a portion of said ultra-small resonant structure with a high-permeability magnetic material. The magnetic material is formed from a substance selected from a non-conductive magnetic oxide such as a ferrite; a cobaltite, a chromite, and a manganite. The magnetic material may be mumetal, permalloy, Hipernom, HyMu-80, supermalloy, supermumetal, nilomag, sanbold, Mo-Permalloy, Ultraperm, or M-1040.