Foldable Display Cushion Structure for Rigidity and Impact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing foldable electronic devices face challenges in maintaining rigidity and improving visibility and impact resistance, particularly in the folding areas where stress concentrations occur.
Innovation Solution
The electronic device incorporates a cushion layer under a lower member made of metal, which increases the device's rigidity, and an external light reflective member with a black color to enhance visibility and impact resistance. The external light reflective member includes a barrier film and adhesive layers to secure it to the lower member, and cushion members are strategically placed to define cushion holes in the folding area, reducing stress and protecting the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cushion members are disposed below the lower member, then impact resistance is improved, but device complexity increases
Solution Approach 1:
The cushion layer is divided into multiple discrete cushion members (first, second, third, and fourth cushion members) positioned at different locations below the lower member. This segmentation allows stress to be distributed across multiple points during impact, improving impact resistance while maintaining a manageable structural complexity through modular arrangement.
Solution Approach 2:
Cushion members are pre-positioned below the lower member at specific locations (first through fourth positions) before any impact occurs. This prior cushioning ensures that when impact occurs during folding operations, the cushion members are already in place to absorb and distribute the stress, preventing damage to the display panel and other components.
2Illumination intensity
If external light reflective member with black color is used, then visibility is improved, but light reflection function is reduced
Solution Approach 1:
The external light reflective member is configured with a black color, which absorbs light rather than reflecting it. This color change transforms the member's optical properties to reduce harmful light reflection that could interfere with display visibility, while the member's position and structure still provide necessary mechanical support and edge definition for improved overall visibility.
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 effectively enhances the rigidity of the electronic device, improves visibility by using a light-absorbing material, and increases impact resistance by distributing stress through the cushion members, thereby addressing the limitations of existing foldable devices.
Implementation Method 1
The external light reflective member may have a black color
Implementation Method 2
a first barrier adhesive layer disposed between the barrier film and the lower protective film to bond the barrier film to the lower protective film; and a second barrier adhesive layer disposed between the barrier film and the lower member to bond the barrier film to the lower member
Data Source
AI summary
An electronic device includes a display panel including non-folding areas and a folding area disposed between the non-folding areas, a lower protective film disposed below the display panel, an external light reflective member disposed below the lower protective film, a lower member disposed below the external light reflective member, and cushion members disposed below the lower member. The display panel is foldable along a folding axis. The cushion members are spaced apart from each other and define a cushion hole in the folding area.