Graphite Nanotube Hybrid Socket for Dimensional Stability
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Solution Overview
Problem
Hybrid LGA socket designs face challenges with dimensional stability and increased solder strain due to larger package footprints and material properties, which affect electrical performance as processor speeds and core counts increase.
Innovation Solution
A graphite nanotube hybrid socket with aligned graphite nanofibers, including vertically and horizontally aligned nanofibers, is used in the socket housing wall, formed through an extrusion process with a resin and nanofibers, providing enhanced heat distribution and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Hybrid LGA socket design is used to reduce cost and mitigate registration issues, then manufacturing cost and ease of assembly are improved, but dimensional stability and solder strain resistance deteriorate due to larger package footprint and material properties
Solution Approach 1:
The patent applies composite materials by integrating graphite nanofibers into the socket housing material. This composite structure combines the cost-effectiveness of standard housing materials with the exceptional thermal conductivity and dimensional stability of graphite nanofibers, resolving the contradiction between manufacturing ease and dimensional stability.
Solution Approach 2:
The patent changes the thermal and mechanical parameters of the housing material by incorporating graphite nanofibers. This modification alters the material's thermal conductivity and dimensional stability characteristics, enabling the housing to withstand solder reflow temperatures and thermal cycling without excessive strain or deformation.
2Ease of manufacture
If HLGA socket design is used for cost reduction, then manufacturing cost is improved, but solder strain increases due to higher specific heat and conductivity of current materials
Solution Approach 1:
The graphite nanofiber composite housing material reduces solder strain by providing a more stable thermal and mechanical environment during soldering operations. The nanofibers create a distributed thermal conduction network that prevents localized hot spots and reduces thermal stress on solder joints.
Solution Approach 2:
The graphite nanofibers act as an intermediary thermal management system within the housing material. They mediate heat distribution between the socket components and the external environment, reducing thermal gradients and minimizing stress transmission to the solder joints.
3Productivity
If larger package footprint is used to accommodate more cores and higher speed signaling, then processor performance is improved, but dimensional stability and electrical performance of the socket deteriorate
Solution Approach 1:
The graphite nanofiber composite enables larger package footprints to maintain dimensional stability by providing enhanced thermal conductivity and structural rigidity. The nanofibers create a reinforced matrix that resists deformation across larger dimensions, maintaining electrical performance despite increased socket size.
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 aligned graphite nanofibers reduce heat strain during solder reflow processes, improving dimensional stability and electrical performance while maintaining a simple and cost-effective design.
Implementation Method 1
The plurality of aligned graphite nanofibers distributing heat and providing enhanced dimensional stability. For example, the plurality of aligned graphite nanofibers more evenly distributes heat when the socket is undergoing solder reflow processes, thereby reducing strain.
Data Source
AI summary
A method and structure for implementing enhanced dimensional stability with a graphite nanotube hybrid socket. A socket housing wall includes a plurality of aligned graphite nanofibers. The plurality of aligned graphite nanofibers distributing heat and providing enhanced dimensional stability. For example, the plurality of aligned graphite nanofibers more evenly distributes heat when the socket is undergoing solder reflow processes, thereby reducing strain.