Foldable Display Panel Support with Zoned Adhesion
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Solution Overview
Problem
Display panels in flexible devices are prone to deformation when folded, which can lead to damage and reduced functionality.
Innovation Solution
A display device design featuring distinct folding and non-folding areas with varying adhesive forces and lattice patterns on a panel support to manage stress distribution during folding, using adhesive members with different moduli and separation spaces to stabilize the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display panel is folded, then the volume of the display device is decreased, but the display panel becomes deformed
Solution Approach 1:
The support structure is divided into multiple flat plates arranged in a lattice pattern, creating discrete support zones rather than a continuous rigid structure. This segmentation allows the display panel to fold while maintaining support in non-folding areas, resolving the contradiction between volume reduction and structural integrity.
Solution Approach 2:
Different regions of the support structure have different properties: flat plates provide rigid support in non-folding areas, while the lattice pattern with gaps allows flexibility in folding areas. This local differentiation enables the display panel to maintain structural integrity during folding while still achieving volume reduction.
2Strength
If adhesive members with high adhesive force are used, then the display panel is held firmly, but the panel cannot be folded smoothly
Solution Approach 1:
The adhesive members are segmented and positioned only on flat plates in non-folding areas, rather than covering the entire support structure. This segmentation allows high adhesive force where needed while leaving folding areas free to bend smoothly without adhesive resistance.
Solution Approach 2:
The adhesive members are extracted from the folding areas and placed only in non-folding areas on the flat plates. This extraction removes the harmful effect of adhesive force from the folding regions while maintaining firm holding in areas where the panel should remain stable.
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
Prevents deformation of the display panel during folding by distributing stress effectively, ensuring structural integrity and maintaining functionality.
Implementation Method 1
An adhesive member is interposed between the display panel and the panel support. An adhesive force between the first adhesive member and the first flat plate is greater than an adhesive force between the second adhesive member and the second flat plate.
Data Source
AI summary
A display device having a display panel including first and second folding areas, a first non-folding area between the first and second folding areas, and a second non-folding area. A panel support is disposed on a lower side of the display panel and includes a first lattice pattern overlapping the first folding area, a second lattice pattern overlapping the second folding area, a first flat plate overlapping the first non-folding area, and a second flat plate overlapping the second non-folding area. An adhesive member is interposed between the display panel and the panel support and includes a first adhesive member disposed directly on the first flat plate and a second adhesive member disposed directly on the second flat plate. An adhesive force between the first adhesive member and the first flat plate is greater than an adhesive force between the second adhesive member and the second flat plate.