Graphite Composite Display Structure for Heat, EMI, and ESD Shielding
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Solution Overview
Problem
Display devices generate heat, electromagnetic interference, and electrostatic discharge, which can lead to overheating, image degradation, health risks, and malfunction, necessitating effective heat dissipation, EMI shielding, and ESD shielding.
Innovation Solution
A display device incorporating a multi-functional member comprising a metal layer, a multi-functional layer with graphite and resin, an adhesive layer, and a conductive connector, which provides heat dissipation, EMI shielding, ESD shielding, and impact absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a display device generates heat during operation, then light emission function is achieved, but heat accumulation causes Burn In of EL material and degrades image quality
Solution Approach 1:
The patent combines multiple protective functions (heat dissipation, EMI shielding, ESD shielding, and impact absorption) into a single multi-functional member comprising a metal layer and a multi-functional layer. This integrated structure efficiently dissipates heat generated during light emission while simultaneously providing electromagnetic and electrostatic protection, preventing Burn In and image quality degradation.
Solution Approach 2:
The multi-functional member uses composite materials consisting of a metal layer (for heat conduction and EMI shielding) combined with a multi-functional layer containing graphite particles in a resin matrix (for heat dissipation and ESD protection). This composite structure optimizes thermal management while maintaining electrical properties.
2Ease of operation
If electromagnetic waves are generated during operation, then display function is achieved, but user exposure to electromagnetic waves may cause health problems
Solution Approach 1:
The metal layer in the multi-functional member simultaneously provides structural support, electromagnetic interference shielding, and heat dissipation functions. This integrated approach shields users from electromagnetic waves generated during display operation while maintaining normal display functionality.
Solution Approach 2:
The multi-functional member serves multiple purposes: it acts as an EMI shield to protect users from electromagnetic radiation, while also providing heat dissipation, ESD protection, and mechanical impact absorption. This universal component addresses multiple harmful effects generated during display operation.
3Ease of operation
If static electricity is generated during operation, then display operation is achieved, but malfunction or damage may occur without proper shielding
Solution Approach 1:
The multi-functional layer in the multi-functional member provides electrostatic discharge protection alongside heat dissipation and EMI shielding. This integrated structure safely dissipates static electricity generated during display operation, preventing malfunctions and damage to sensitive components.
4Reliability
If multiple separate protective components are used for heat dissipation, EMI shielding, and ESD shielding, then comprehensive protection is achieved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent integrates heat dissipation, EMI shielding, ESD shielding, and impact absorption functions into a single multi-functional member. This consolidation simplifies the device structure, reduces the number of components, and eases manufacturing while maintaining comprehensive protection against multiple harmful effects.
Solution Approach 2:
The multi-functional member is designed to perform multiple protective functions simultaneously: thermal management through the metal layer and graphite-containing layer, electromagnetic shielding through the conductive metal layer, electrostatic discharge protection through the graphite particles, and mechanical impact resistance through the layered structure. This universal component replaces what would traditionally require multiple separate protective elements.
5Temperature
If graphite and resin are mixed in specific ratios, then heat dissipation efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies optimal weight ratios of graphite to resin (30-90 wt% graphite, 70-10 wt% resin) to achieve balanced heat dissipation efficiency and structural integrity. These parameter ranges provide manufacturing flexibility while ensuring adequate thermal management performance.
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 enhances heat dissipation, improves safety and reliability by preventing damage, reduces manufacturing complexity, and maintains adhesiveness while blocking rear reflected light and absorbing impact.
Implementation Method 1
heat dissipation efficiency
Implementation Method 2
electromagnetic interference (EMI) shielding
Implementation Method 3
electrostatic discharge (ESD) shielding
Data Source
AI summary
A display device includes a metal layer, a multi-functional layer, an adhesive layer, a display substrate, a printed circuit board, and a conductive connector. The multi-functional layer is disposed on the metal layer, and includes graphite and a resin mixed with the graphite. The adhesive layer is disposed on the multi-functional layer. The display substrate is disposed on the adhesive layer. The conductive connector directly connects a first surface of the printed circuit board and a lower surface of the metal layer.