SSD Chip Shielding Structure for EMI and ESD Contact Reliability
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Solution Overview
Problem
Electronic devices face challenges in protecting electronic components from electromagnetic interference (EMI) and electrostatic discharge (ESD) as they are miniaturized and require enhanced shielding solutions to ensure reliability.
Innovation Solution
A solid state drive (SSD) apparatus with a shielding structure comprising elastic unit shielding structures that surround semiconductor chips, providing electrical connection to the case and maintaining contact through a restoring force, thereby enhancing EMI and ESD protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shielding structure is provided to protect semiconductor chips from EMI and ESD, then shielding performance is improved, but device complexity increases
Solution Approach 1:
The shielding structure is divided into multiple unit shielding structures (first unit shielding structures and second unit shielding structures) that are spaced apart from each other, creating a segmented shielding approach that reduces overall complexity while maintaining protection effectiveness
Solution Approach 2:
Unit shielding structures are selectively positioned around specific semiconductor chips that require protection, rather than providing uniform shielding across the entire device, optimizing protection where needed while reducing unnecessary complexity
2Ease of manufacture
If unit shielding structures are spaced apart with gaps, then manufacturing flexibility is improved, but shielding effectiveness deteriorates
Solution Approach 1:
Elastic bodies are introduced as intermediary elements between the unit shielding structures and the substrate, providing restoring force that ensures reliable electrical connection and maintains shielding effectiveness despite the spaced-apart configuration
Solution Approach 2:
The elastic bodies enable dynamic adjustment of contact pressure and electrical connection parameters, allowing the shielding structure to adapt to assembly variations while maintaining effective EMI and ESD protection
3Reliability
If elastic bodies are used in unit shielding structures, then contact reliability is improved, but device complexity increases
Solution Approach 1:
The elastic bodies automatically provide restoring force to maintain electrical connection between the unit shielding structures and the substrate without requiring external adjustment mechanisms, achieving self-regulating contact reliability
Solution Approach 2:
The elastic properties of the bodies allow them to deform and adapt to variations in assembly positioning, automatically compensating for manufacturing tolerances and maintaining reliable electrical connection
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 improves the structural reliability of the shielding structure and enhances EMI and ESD shielding performance by maintaining contact without physical damage, even with assembly errors, thus ensuring improved protection for electronic components.
Implementation Method 1
an elastic body configured to provide a restoring force to the conductor
Data Source
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AI summary
A solid state drive apparatus includes a case including an upper wall and a lower wall, a substrate in the case and including a plurality of first connection pads in or on a first surface of the substrate facing the upper wall of the case, a first semiconductor chip on the first surface of the substrate, and a first shielding structure electrically connecting the upper wall of the case to the plurality of first connection pads, wherein the first shielding structure includes a plurality of first unit shielding structures surrounding the first semiconductor chip and spaced apart from each other with gaps therebetween, and wherein each of the plurality of first unit shielding structures includes an elastic body.