Foldable Display Support Plate Structure for Bending Shock Resistance
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Solution Overview
Problem
Display devices with bendable areas face challenges in shock resistance, particularly in the bending regions, which can lead to damage during repeated folding or bending.
Innovation Solution
The display device incorporates a substrate with a bendable area supported by a support plate featuring distinct regions with varying thicknesses and lattice patterns, coupled by adhesive layers and buffer layers, allowing for enhanced flexibility and shock resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a support plate with uniform thickness is used, then structural strength is maintained, but shock resistance in bendable areas deteriorates
Solution Approach 1:
The support plate employs varying thickness across different regions: a first thickness in non-bendable areas, a second (reduced) thickness in bendable areas, and a third thickness in intermediate areas. This local differentiation allows the plate to provide shock absorption in bendable regions while maintaining structural strength in rigid regions, resolving the contradiction between uniform strength and localized shock resistance.
2Stability of the object's composition
If a solid support plate is used, then structural integrity is maintained, but flexibility in bendable areas deteriorates
Solution Approach 1:
The support plate utilizes regions with reduced thickness (second thickness) in bendable areas, creating a flexible zone that can accommodate repeated bending and folding. This thin film approach maintains overall structural integrity while enabling the necessary flexibility in specific regions, resolving the contradiction between structural integrity and flexibility.
3Adaptability or versatility
If the support plate thickness is reduced in bendable areas, then flexibility improves, but structural strength deteriorates
Solution Approach 1:
The support plate is segmented into distinct thickness regions: first thickness regions for structural strength, second thickness regions for flexibility in bendable areas, and third thickness regions as intermediate zones. This segmentation allows each region to perform its specialized function, resolving the contradiction between flexibility and structural strength by distributing these properties across different segments of the plate.
Data Source
AI summary
A display device includes a substrate that includes a display area and a non-display area, a display layer disposed on the substrate and overlapping the display area, and a support plate disposed under the substrate. The support plate includes a first region disposed on a rear surface of the display layer, a second region connected to the first region and including a lattice pattern, and a third region connected to the second region and disposed on a rear surface of the first region. The second region is bent and overlaps a bending area of the non-display area of the substrate.