Composite Back Cover for Display Device Weight and Strength
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Solution Overview
Problem
As display devices become smaller, thinner, and more portable, they face challenges with weight and cost increases due to the use of metal or glass back covers, which compromise their portability and require additional structural reinforcement.
Innovation Solution
A display device with a back cover composed of multiple layers, including a metallic first layer, a plastic core, and a second metallic layer, where the core is sandwiched between the first and second layers, and a panel adhesive layer for full-surface attachment to the display panel, enhancing heat radiation and structural strength while reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal or glass back cover is adopted to secure the strength of the display device, then the strength is improved, but the weight increases
Solution Approach 1:
The back cover is constructed using a composite material consisting of a plastic core layer and metallic surface layers (aluminum or stainless steel) bonded together. This composite structure provides the strength and rigidity of metal while significantly reducing the overall weight compared to solid metal or glass back covers.
2Strength
If a metal or glass back cover is adopted to secure the strength of the display device, then the strength is improved, but the cost increases
Solution Approach 1:
The composite back cover uses a plastic core which is less expensive than solid metal or glass, while the thin metallic surface layers provide the necessary strength and aesthetic appearance. This combination reduces material costs and manufacturing complexity compared to using solid metal or glass throughout.
Solution Approach 2:
The back cover is divided into multiple functional layers: a plastic core layer for structural support and weight reduction, and thin metallic surface layers for strength and appearance. This segmentation allows each layer to be optimized independently and assembled through bonding processes.
3Length of moving object
If the display device is made smaller and thinner, then the portability is improved, but the heat radiation performance deteriorates
Solution Approach 1:
The metallic surface layers in the composite back cover have high thermal conductivity, which enables efficient heat dissipation from the display panel even in thin device designs. The metal layers act as heat sinks, conducting heat away from the internal components to the exterior surface.
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 results in improved heat radiation performance, reduced weight, and increased structural strength, enabling a slim and lightweight display device with enhanced assembly efficiency and a simple, neat appearance, while allowing for wall-mounting without additional components.
Implementation Method 1
a panel adhesive layer for full-surface attachment to the display panel
Implementation Method 2
the first layer and the second layer may be formed of a metallic material... improved heat radiation performance
Data Source
AI summary
A display device includes a display panel, a back cover disposed on a rear surface of the display panel and including a plurality of layers, and a finishing portion disposed to surround at least a part of an outer side surface of the display panel and an outer side surface of the back cover. The back cover includes a first layer positioned on the rear surface of the display panel and disposed in an area including an area overlapping with the display panel, a second layer disposed apart from the first layer to oppose the first layer, and a core disposed between the first layer and the second layer.