Graphene-Coated PCB Lamination for Heat and High-Frequency Performance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current printed circuit boards (PCBs) face limitations in high-frequency performance and heat management due to their conventional metal coatings, which hinder their ability to handle increasing bandwidth demands and thermal conductivity requirements.
Innovation Solution
The process involves laminating PCBs with a graphene-metal structure, where a graphene layer is applied over a metal layer on the core using an adhesive, allowing for improved heat management and higher electron mobility without increasing the thickness of the PCB, and additional graphene-metal structures are added to enhance conductivity and frequency performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional metal sheets are laminated onto non-conductive materials for PCB construction, then the basic electrical connection function is achieved, but the heat management and high-frequency performance are insufficient
Solution Approach 1:
The patent applies composite materials by combining traditional metal layers (copper or nickel) with graphene coating to create a graphene-metal structure. This composite structure integrates the electrical conductivity of metal with the superior thermal conductivity and high-frequency performance of graphene, resolving the contradiction between heat management and high-frequency performance requirements.
Solution Approach 2:
The patent changes the physical and chemical parameters of the PCB structure by introducing graphene coating with specific properties (high thermal conductivity, high electron mobility). This parameter change enables improved heat dissipation and high-frequency performance without fundamentally altering the basic PCB architecture, thus resolving the performance limitations of traditional materials.
2Temperature
If graphene coating is applied to metal layers to improve thermal conductivity and electron mobility, then heat management and high-frequency performance are enhanced, but the PCB thickness increases
Solution Approach 1:
The patent uses graphene as an ultra-thin film coating applied to the metal layers. This thin film approach provides the thermal conductivity and electron mobility benefits of graphene while maintaining minimal thickness, thus enhancing heat management and high-frequency performance without significantly increasing the overall PCB thickness.
3Reliability
If higher bandwidth demands are addressed by improving material properties, then frequency performance and heat management are enhanced, but the complexity of the lamination process increases
Solution Approach 1:
The patent applies preliminary action by pre-coating the metal layers with graphene before the lamination process. This pre-preparation of the graphene-metal structure allows the subsequent lamination to proceed with standard procedures, avoiding the need for complex post-lamination graphene application processes and reducing overall process complexity while achieving the desired frequency performance and heat management improvements.
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
This approach significantly enhances the thermal conductivity, electron mobility, and high-frequency performance of PCBs, enabling them to handle higher bandwidth demands while maintaining a compact size.
Implementation Method 1
enhancing thermal conductivity and electron mobility
Implementation Method 2
enhancing thermal conductivity and electron mobility
Implementation Method 3
attaching a graphene-metal structure to a top surface of the core via the adhesive layer
Data Source
AI summary
Processes for laminating a graphene-coated printed circuit board (PCB) are disclosed. An example laminated PCB may include a lamination stack that may include an inner core, an adhesive layer, and at least one graphene-metal structure. Pressure and heat—which may be applied under vacuum or controlled gas atmosphere—may be applied to the lamination stack, after all materials have been placed. The graphene of the graphene-metal structure is designed to promote high frequency performance and heat management within the PCB.