Vehicle Display Stack Structure for Heat Dissipation and Adhesion
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Solution Overview
Problem
Existing display devices, particularly those used in vehicles, face challenges with durability in high temperature and humidity environments, leading to reduced reliability and lifespan due to issues with heat dissipation and reflectance, which are exacerbated by direct contact between the heat-dissipative plate and reflectance-reducing layers.
Innovation Solution
A reflectance-reducing stack structure is introduced between the back plate and the heat-dissipative plate, comprising a reflectance-reducing layer and an adhesion enhancing layer, using the same base adhesive material to enhance interfacial adhesive force and prevent peeling defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat-dissipative plate is disposed to be spaced apart from the back plate, then heat dissipation is improved, but the structural stability and adhesion between layers deteriorates
Solution Approach 1:
A reflectance-reducing stack structure is introduced as an intermediary component between the back plate and heat-dissipative plate. This stack structure includes multiple layers (reflectance-reducing layer, adhesion enhancing layer, and barrier layer) that serve as a mediator to maintain structural stability while allowing the heat-dissipative plate to remain spaced apart for effective heat dissipation.
Solution Approach 2:
The reflectance-reducing stack structure employs composite material construction with multiple functional layers. Each layer is made of specific materials optimized for its function: the reflectance-reducing layer uses low-reflectance materials, the adhesion enhancing layer uses high-adhesion materials, and the barrier layer uses moisture/oxidation barrier materials, creating a composite structure that addresses multiple requirements simultaneously.
2Object-generated harmful factors
If a reflectance-reducing layer is disposed in contact with the heat-dissipative plate, then reflectance is reduced, but adhesion strength and reliability deteriorate due to peeling defects
Solution Approach 1:
The reflectance-reducing stack structure is segmented into multiple functional layers. The reflectance-reducing layer is separated from direct contact with the heat-dissipative plate by the adhesion enhancing layer and barrier layer. This segmentation allows each layer to perform its specific function optimally without compromising the adhesion strength at the interface between the heat-dissipative plate and the stack structure.
Solution Approach 2:
The adhesion enhancing layer and barrier layer serve as intermediary layers between the reflectance-reducing layer and the heat-dissipative plate. These intermediary layers protect the reflectance-reducing layer from direct contact with the heat-dissipative plate, preventing peeling defects while maintaining the reflectance-reducing function.
3Ease of operation
If the display device is exposed to high temperature and humidity environment, then the operational capability is maintained, but the lifespan and reliability are reduced due to degradation
Solution Approach 1:
The barrier layer in the reflectance-reducing stack structure is specifically designed to convert the harmful effect of high temperature and humidity into a beneficial protective function. The barrier layer with low water vapor transmission rate and low oxygen permeability rate acts as a shield that prevents moisture and oxygen from degrading the organic light-emissive elements, thereby extending the device's lifespan in harsh environments.
Solution Approach 2:
The reflectance-reducing stack structure uses composite materials with specific properties to resist high temperature and humidity. The barrier layer is made of materials with low water vapor transmission rate and low oxygen permeability rate, creating a composite structure that maintains operational capability while protecting against environmental degradation over time.
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 structure improves the reliability and lifespan of vehicle display devices by reducing reflectance and enhancing adhesion, thereby delaying the need for replacement and creating an eco-friendly product.
Implementation Method 1
reflectance-reducing stack structure disposed between the back plate and the heat-dissipative plate
Implementation Method 2
reflectance-reducing layer
Implementation Method 3
adhesion enhancing layer disposed between the reflectance-reducing layer and the heat-dissipative plate
Implementation Method 4
binders of the reflectance-reducing layer and the adhesion enhancing layer having the same base adhesive material
Implementation Method 5
heat-dissipative plate disposed to be spaced apart from the back plate
Data Source
AI summary
Disclosed is a display device including a display panel including a display area, a back plate disposed under the display panel, a heat-dissipative plate disposed to be spaced apart from the back plate, and a reflectance-reducing stack structure disposed between the back plate and the heat-dissipative plate.