MXene Shield Layer Layout for EMI-Resistant Memory Cells
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Solution Overview
Problem
Semiconductor devices are vulnerable to external electromagnetic interference (EMI) from stray magnetic fields, which can affect the reliability and performance of memory cells, and conventional shielding materials like silver and copper are heavy, costly, and difficult to process.
Innovation Solution
Incorporating a shield layer made of MXene material, a two-dimensional transition metal carbide or nitride, to provide efficient EMI shielding with high conductivity and low thickness, thus protecting memory cells without interfering with device operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional shielding materials like silver and copper are used, then EMI shielding effectiveness is improved, but weight increases and manufacturing cost increases
Solution Approach 1:
The patent changes the material parameters by transitioning from conventional bulk metals (silver, copper) to two-dimensional MXene materials, which provide superior EMI shielding per unit weight due to their unique electronic structure and high conductivity-to-weight ratio
Solution Approach 2:
The patent employs composite material strategies by integrating MXene into various forms (flakes, nanosheets, coatings) combined with polymers or other matrices, achieving optimized balance between EMI shielding effectiveness and weight reduction
2Object-affected harmful factors
If conventional shielding materials like silver and copper are used, then EMI shielding effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
The patent adopts cost-effective MXene materials that can be produced through more economical synthesis routes compared to rare precious metals like silver, making the shielding solution more economically viable for mass production
Solution Approach 2:
The patent changes the material selection from expensive conventional metals to more affordable MXene materials, altering the cost parameter while maintaining or improving EMI shielding performance
3Object-affected harmful factors
If conventional shielding materials are used, then EMI shielding effectiveness is improved, but processing difficulty increases
Solution Approach 1:
The patent utilizes thin film forms of MXene that can be deposited onto substrates and integrated into flexible electronic devices, enabling easier processing and integration compared to rigid conventional metal shields
Solution Approach 2:
The patent creates composite structures where MXene is integrated into flexible matrices or coatings, improving processability and ease of manufacturing while maintaining EMI shielding effectiveness
4Object-affected harmful factors
If shield layer is added to protect memory cells, then EMI shielding effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent designs the MXene shield layer to serve multiple functions simultaneously: EMI shielding, electrical conductivity enhancement, and potential integration with other device components, thereby reducing overall device complexity through multi-functionality
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 MXene shield layer effectively shields against EMI, improving the operational reliability and performance of semiconductor devices while being lightweight and cost-effective.
Implementation Method 1
one or more shield layers disposed at least one of at a first location over the memory layer or a second location under the memory layer, the one or more shield layers including an MXene material
Data Source
AI summary
A semiconductor device may include: a first conductive line; a second conductive line disposed over the first conductive line and spaced apart from the first conductive line; a memory cell disposed between the first conductive line and the second conductive line and including a memory layer; and one or more shield layers disposed at least one of at a first location over the memory layer or a second location under the memory layer, the one or more shield layers including an MXene material.