Composite Display Casing for Notebook Antenna Sensitivity
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Solution Overview
Problem
The challenge is to create a display casing for notebook PCs that balances thin size, light weight, and strength while maintaining optimal antenna sensitivity, as traditional metal casings with cutouts compromise strength and existing composite solutions increase weight and complexity.
Innovation Solution
A casing structure featuring a butt-joined combination of conductive and nonconductive resin regions, with carbon fiber reinforced plastic (CFRP) and glass fiber reinforced plastic (GFRP) regions, where the CFRP region provides strength and the GFRP region accommodates antennas, enhancing antenna sensitivity and allowing for a thinner design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal casings with cutout portions are used for antenna mounting, then antenna sensitivity is improved, but structural strength deteriorates
Solution Approach 1:
The patent employs composite materials consisting of a metal base material with a resin layer containing conductive particles. This composite structure provides both the mechanical strength of metal and the electromagnetic properties needed for antenna mounting, eliminating the need for cutout portions while maintaining antenna sensitivity.
Solution Approach 2:
The resin layer with conductive particles is applied locally at the antenna mounting portions rather than throughout the entire casing. This localized treatment provides the necessary electromagnetic shielding and antenna contact properties only where needed, preserving the overall structural integrity of the metal casing.
2Strength
If traditional metal casings are used, then structural strength is maintained, but weight increases and antenna sensitivity deteriorates
Solution Approach 1:
The combination of metal base material and resin layer with conductive particles creates a composite structure that leverages the strength of metal while adding the electromagnetic properties necessary for improved antenna sensitivity, avoiding the need to sacrifice structural integrity.
Solution Approach 2:
The invention changes the surface properties of the metal casing by adding a resin layer with specific electrical conductivity parameters. This modifies the electromagnetic interaction at the antenna contact points without fundamentally altering the mechanical properties of the base metal structure.
3Weight of moving object
If resin materials are used for display casing, then weight is reduced, but structural strength and rigidity deteriorate
Solution Approach 1:
The patent uses a composite structure where a thin resin layer with conductive particles is applied to a metal base material. This provides the weight reduction benefit of resin materials while the metal substrate maintains the necessary structural strength and rigidity.
Solution Approach 2:
The resin material is applied only as a thin surface layer rather than as a bulk material. This localized application reduces weight compared to full resin construction while the underlying metal structure provides the necessary mechanical support and strength.
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 solution achieves a lightweight, thin, and robust display casing with improved antenna sensitivity by increasing the contact area of joint regions and providing dedicated spaces for antennas, thereby overcoming the limitations of traditional metal casings.
Implementation Method 1
a conductive resin region and a nonconductive resin region are butt joined
Implementation Method 2
said laminated panel having an expanded layer disposed between layers made of carbon fiber reinforced plastic
Implementation Method 3
injection molding glass fiber reinforced plastic into the mold in which the laminated panel has been fixed
Data Source
AI summary
An aspect provides a method, including: fixing a laminated panel, which has been cut into a predetermined shape, to a mold, said laminated panel having an expanded layer disposed between layers made of a conductive resin; injection of molding non-conducting resin into the mold in which the laminated panel has been fixed; wherein a non-conductive region and a conductive region are joined to form a bottom surface of a display casing, said display casing having an inner and outer surface; and wherein an antenna mounting space is formed in the non-conductive region. Other aspects are described and claimed.