Flexible Display Heat Dissipation Layer with Adhesive Openings
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Solution Overview
Problem
Existing display devices face challenges in improving heat dissipation performance and facilitating easy folding of flexible display modules.
Innovation Solution
A display device design that includes a display module with non-folding regions and a folding region, supported by a structure comprising a first and second support plate, a heat dissipation layer between them, and adhesive layers with openings wider than the bending portion of the heat dissipation layer, allowing for enhanced heat dissipation and easier folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation layer is added between support plates, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The heat dissipation layer is integrated between the first and second support plates as part of the support structure, combining thermal management functionality with structural support. This merging approach adds heat dissipation capability without creating a completely separate system, thereby improving temperature control while limiting the increase in overall device complexity.
2Ease of operation
If adhesive layers with openings are used, then ease of folding is improved, but bonding strength deteriorates
Solution Approach 1:
The adhesive layers are segmented with openings that allow the heat dissipation layer to pass through. This segmentation creates localized non-bonded regions that enable folding flexibility while maintaining bonded regions that provide structural strength. The openings are strategically positioned to balance folding ease with bonding integrity.
Solution Approach 2:
The adhesive layers exhibit local quality variations: fully bonded in regions requiring structural strength, and partially open in regions requiring folding flexibility. This localized differentiation of bonding characteristics allows the structure to simultaneously achieve both strong bonding where needed and easy folding where required.
3Ease of operation
If the opening width is greater than the bending portion width, then ease of folding is improved, but structural integrity deteriorates
Solution Approach 1:
The opening width parameter is specifically designed to be greater than the bending portion width of the heat dissipation layer. This parameter change optimizes the balance between folding ease and structural integrity by providing sufficient clearance for the bending portion while maintaining adequate adhesive coverage in surrounding areas to preserve structural stability.
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 proposed solution enhances heat dissipation performance and facilitates easier folding of the display device, improving its overall functionality and user experience.
Implementation Method 1
a heat dissipation layer disposed between the first and second support plates
Implementation Method 2
a first adhesive layer disposed between the first support plate and the heat dissipation layer, and a second adhesive layer disposed between the second support plate and the heat dissipation layer
Data Source
AI summary
A display device includes a display module including a first non-folding region, a folding region, and a second non-folding region arranged in a first direction, a first support plate disposed on the display module, a second support plate disposed on the first support plate, a heat dissipation layer disposed between the first and second support plates, and including a bending portion overlapping the folding region, a first adhesive layer disposed between the first support plate and the heat dissipation layer, and a second adhesive layer disposed between the second support plate and the heat dissipation layer. An opening defined in each of the first and second adhesive layers has a width greater than a width of the bending portion of the heat dissipation layer in a portion overlapping the folding region.