Foldable Display Heat Dissipation Structure for Damage-Free Assembly
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Solution Overview
Problem
Foldable display products face challenges in assembly due to complex structures, which can lead to damage and reliability issues such as die marks and collisions with the middle frame, making the process time-consuming and laborious.
Innovation Solution
A display module with a heat dissipation structure comprising multiple foam layers and missing avoidance areas, including a second foam layer with specific gaps to accommodate components, and a heat dissipation layer with RF shielding, to prevent damage and improve assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex middle frame structure is used in foldable display products, then the product can achieve folding functionality, but the assembly process becomes time-consuming and laborious
Solution Approach 1:
The heat dissipation structure is divided into multiple functional layers: adhesive layer, first foam layer, heat dissipation layer, and second foam layer with missing avoidance areas. This segmentation allows each layer to perform its specific function independently, simplifying the overall assembly process while maintaining folding functionality.
Solution Approach 2:
The heat dissipation structure with pre-designed missing avoidance areas is prepared in advance, allowing components like bonding parts and COF to be positioned correctly during assembly without requiring complex adjustments, thereby improving assembly efficiency.
2Adaptability or versatility
If a complex middle frame structure is used in foldable display products, then the product can achieve folding functionality, but the display module becomes prone to damage and die marks
Solution Approach 1:
The first foam layer and second foam layer are positioned between the display panel and the middle frame structure to provide cushioning and protection, preventing die marks and damage to the display module during assembly and operation, thereby improving reliability.
Solution Approach 2:
The heat dissipation structure acts as an intermediary layer between the display panel and the middle frame structure, with the foam layers providing mechanical protection and the heat dissipation layer managing thermal effects, thus protecting the display module from damage.
3Temperature
If traditional heat dissipation structures are used, then heat dissipation function is provided, but the product thickness increases and costs increase
Solution Approach 1:
The heat dissipation structure uses composite materials including foam layers for cushioning and a heat dissipation layer containing metallic aluminum film and RF shielding film. This composite structure achieves effective heat dissipation while maintaining thin profile and reducing overall product thickness.
Solution Approach 2:
The heat dissipation layer serves multiple functions simultaneously: heat dissipation through metallic aluminum film, RF shielding through the shielding film, and structural support. This multi-functionality eliminates the need for separate components, reducing product thickness and cost.
4Temperature
If traditional heat dissipation structures are used, then heat dissipation function is provided, but manufacturing costs increase
Solution Approach 1:
The heat dissipation function, RF shielding function, and cushioning function are merged into a single integrated heat dissipation structure with multiple layers. This consolidation reduces the number of separate components and assembly steps, thereby lowering manufacturing costs.
Solution Approach 2:
The use of composite materials in the heat dissipation layer, particularly the combination of metallic aluminum film and RF shielding film, achieves multiple functions in one layer, reducing material costs and simplifying the manufacturing process.
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 product reliability by preventing damage during assembly, reduces product thickness, and lowers costs while maintaining effective heat dissipation and RF shielding.
Implementation Method 1
an adhesive layer (110a) adhered to a back side of the display panel (10)
Implementation Method 2
a heat dissipation layer (110b) located on a side of the first foam layer (110c) away from the adhesive layer (110a)
Implementation Method 3
the heat dissipation layer (110b) includes a metallic aluminum film and an RF shielding film, the metallic aluminum film has a first side away from the second foam layer (111) and a second side close to the second foam layer (111), and the RF shielding film is disposed on at least one of the first side and the second side
Data Source
AI summary
A display module, display device and heat dissipation assembly are provided. The display module includes a display panel and a heat dissipation structure. The heat dissipation structure includes an adhesive layer adhered to a back side of the display panel, a first foam layer located on a side of the adhesive layer away from the display panel, a heat dissipation layer located on a side of the first foam layer away from the adhesive layer, and a second foam layer located on a side of the heat dissipation layer away from the first foam layer. The second foam layer has a plurality of missing avoidance areas.