Magnetic Shield Tray for MRAM External Field Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Magnetic memories, such as MRAMs, are vulnerable to data damage and operational disruption due to external magnetic fields during transportation, and existing shielding solutions are costly and not suitable for shipment due to the small size and sensitivity of these devices.
Innovation Solution
A magnetic shield tray with a plate-form main body and mount portions, where two magnetic layers with high permeability and saturation magnetization are added to sandwich the tray, effectively shielding magnetic memories from external magnetic fields without increasing manufacturing costs, using materials like Ni, Fe, Co, and their alloys, and optionally including insulating sheets for static protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing shielding solutions are used to protect magnetic memories from external magnetic fields, then magnetic memories are shielded from external magnetic fields, but manufacturing costs increase
Solution Approach 1:
The magnetic shield tray nests the magnetic memories within a protective magnetic shielding structure. The tray body with mounting holes provides the primary shielding layer, and additional magnetic shield wrappers can be nested around individual memories or groups of memories, creating a nested protection system that effectively shields against external magnetic fields while maintaining cost-effectiveness through shared shielding infrastructure.
Solution Approach 2:
The magnetic shield tray acts as an intermediary structure between the external magnetic field environment and the magnetic memories. By positioning the tray with its magnetic material between the memories and external fields, it mediates the interaction, redirecting or absorbing magnetic field lines before they reach the sensitive memory devices, thereby providing protection without requiring direct shielding on each memory component.
2Reliability
If magnetic memories are protected from external magnetic fields during transportation, then data reliability is maintained, but device complexity increases
Solution Approach 1:
The shielding solution is segmented into modular components: a tray body with integrated mounting holes for holding memories, optional magnetic shield wrappers for additional protection, and insulating sheets for static prevention. This segmentation allows flexibility in implementation - users can deploy basic tray shielding for simple applications or add wrappers and insulating layers for higher-protection scenarios, avoiding unnecessary complexity while maintaining data integrity.
Solution Approach 2:
The magnetic shield tray is designed as a universal platform that can accommodate various types and configurations of magnetic memories through its mounting hole structure. The same tray design can protect different memory devices during transportation and storage, and can be combined with optional wrappers and insulating sheets to adapt to different protection requirements, reducing overall system complexity through standardized multi-functional design.
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 solution effectively shields magnetic memories from external magnetic fields, ensuring reliability from shipment to implementation without raising manufacturing costs, and can be adapted to various magnetic memory types and configurations.
Implementation Method 1
two magnetic layers with high permeability and saturation magnetization are added to sandwich the tray, effectively shielding magnetic memories from external magnetic fields
Data Source
AI summary
According to an embodiment, a magnetic shield tray includes a main body with a plate form including a magnetic material, and mount portions as holes disposed in the main body. The magnetic material is exposed on an inner surface of the holes.