Conductive Resin Display Frame Using Carbon Nanotubes
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Solution Overview
Problem
The challenge is to develop a conductive resin composition that provides electrical conductivity and is moldable for use in display devices, addressing the issue of electrostatic discharge while also reducing weight and improving production efficiency, as traditional methods like using metal frames are inefficient and weight-intensive.
Innovation Solution
A conductive resin composition is formulated using a combination of polyester copolymer resin, carbon nanotubes, glass fiber, and flame retardants, which includes polycarbonate, polyethylene terephthalate glycol, acrylonitrile butadiene styrene, and styrene-acrylonitrile resins, along with additives like carbon black and antioxidants, to create a frame that is both conductive and easily molded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal frames are used to provide conductivity, then electrical conductivity is improved, but weight increases due to high specific gravity
Solution Approach 1:
The patent uses a composite material consisting of resin and carbon nanotubes to create a frame that combines electrical conductivity with lightweight properties. The carbon nanotubes dispersed in the resin matrix provide conductive pathways while the resin base material keeps the overall density low, resolving the contradiction between conductivity and weight.
Solution Approach 2:
The patent changes the material composition parameters by incorporating carbon nanotubes at specific concentrations (0.1-5 wt%) into the resin matrix, transforming the electrical conductivity parameter from near-zero (pure resin) to sufficient levels for ESD protection, while maintaining low weight.
2Reliability
If conductive tapes are adhered to frames after assembly, then electrical conductivity is improved, but production efficiency deteriorates due to additional processes
Solution Approach 1:
The patent merges the frame structure with the conductive function by incorporating carbon nanotubes directly into the frame material itself. This eliminates the need for separate conductive tape components and their associated adhesion processes, integrating both structural and conductive roles into a single element.
Solution Approach 2:
The frame material becomes multi-functional by simultaneously providing structural support and electrical conductivity through the carbon nanotube reinforcement. This universal material replaces what would traditionally require separate components (frame + conductive tape), streamlining the manufacturing process.
3Reliability
If carbon nanotube content is increased to improve conductivity, then electrical conductivity is improved, but moldability deteriorates
Solution Approach 1:
The patent optimizes the carbon nanotube concentration parameter within a specific range (0.1-5 wt%) to achieve the desired conductivity threshold while maintaining adequate moldability. This parameter optimization resolves the contradiction by finding the optimal balance point where sufficient conductivity is achieved without excessive reinforcement that would harm processing.
Solution Approach 2:
The patent applies carbon nanotubes selectively at the optimal concentration level needed for conductivity, rather than uniformly high concentrations throughout. This localized quality approach ensures conductivity is achieved at the minimum necessary reinforcement level, preserving moldability in regions where high reinforcement would be detrimental.
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 conductive resin composition effectively prevents electrostatic discharge, enhances production efficiency, and reduces the weight of display devices by providing excellent electrical conductivity and moldability, while also ensuring flame retardancy and mechanical strength.
Implementation Method 1
the conductive resin composition includes a resin including a polyester copolymer resin, and carbon nanotube (CNT)... effectively prevents electrostatic discharge, enhances production efficiency, and reduces the weight of display devices by providing excellent electrical conductivity
Data Source
AI summary
Disclosed are a conductive resin composition and a display device using the same. The display device includes a display panel, and a frame having conductivity, in which the display panel is mounted, wherein the frame is formed of a conductive resin composition and the conductive resin composition includes a resin including a polyester copolymer resin, and carbon nanotube (CNT). The conductive resin composition prevents static discharge due to electrical conductivity and improves production efficiency though simplification of the overall manufacturing process. In addition, the conductive resin composition is applicable to thin film molding due to improved moldability and self-extinguishes flames due to flame retardancy.