Flexible Screen Bearing Plate With Local Rigidity for Fold Flatness
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Solution Overview
Problem
Existing flexible display panels in inward-folding devices face challenges in maintaining a specific bent shape and ensuring flatness in a flattened state due to the need for high flexibility and rigidity, which is not adequately addressed by current support structures.
Innovation Solution
A screen bearing plate with varying rigidity sections is introduced, featuring higher rigidity at gaps between support plates to provide stable support, and includes grooves and reinforcing ribs to enhance flexibility and impact resistance, ensuring consistent bendability and flatness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the screen bearing plate has high rigidity to ensure flatness in flattened state, then flatness is improved, but flexibility to bend into specific shape deteriorates
Solution Approach 1:
The screen bearing plate is designed with different rigidity in different regions: the first and fifth sections have higher rigidity to maintain flatness, while the second, third, and fourth sections have lower rigidity to enable bending. This local differentiation of mechanical properties resolves the contradiction between overall flatness and local flexibility.
Solution Approach 2:
The screen bearing plate is divided into multiple sections (first, second, third, fourth, and fifth sections) with distinct rigidity characteristics. This segmentation allows different parts of the same component to serve different functions: rigid sections for stability and flexible sections for adaptability during folding.
2Adaptability or versatility
If the screen bearing plate has high flexibility to bend into specific shape, then bendability is improved, but support capability at gap locations deteriorates
Solution Approach 1:
The reinforcing area is strategically positioned at the gap location where support is most needed. This local enhancement of rigidity provides structural support exactly where the flexible display panel is most vulnerable, without compromising the overall bendability of the screen bearing plate.
Solution Approach 2:
The reinforcing area acts as an intermediary structural element between the flexible display panel and the support plates. It provides additional support at the gap location, mediating the load transfer and preventing direct contact issues between the flexible panel and support structure.
3Strength
If the screen bearing plate has high rigidity to support flexible display panel, then impact resistance is improved, but flexibility to form specific bent shape deteriorates
Solution Approach 1:
The screen bearing plate exhibits local quality variation where the reinforcing area and end sections provide high rigidity for impact resistance, while the middle sections maintain lower rigidity for flexibility. This spatial differentiation of mechanical properties simultaneously achieves both impact protection and bendability.
Solution Approach 2:
The screen bearing plate can be constructed using composite material structures with varying material properties across different regions. This allows the integration of rigid and flexible characteristics within a single component, achieving both impact resistance and formability.
Data Source
AI summary
An electronic device includes a foldable screen bearing plate, a flexible display panel, and a support plate. The support plate includes a first support plate, a second support plate, and a third support plate. The screen bearing plate is provided with a reinforcing area, at a location corresponding to a gap between two adjacent support plates, with rigidity higher than that of a surrounding subsection. The reinforcing area is above at least a part of the gap, and overlaps the support plates on two sides of the part of the gap.