Foldable Screen Elastic Support Segmentation
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Solution Overview
Problem
Foldable display screens face challenges in maintaining flatness and reducing creasing during the transition from folded to flattened states, which affects the display quality due to insufficient support mechanisms.
Innovation Solution
A foldable screen design incorporating a flexible display panel with elastic portions, including spring coils and connecting rods, that provide support when the panel is flattened and release force when folded, along with additional rigid and soft support bars to distribute stress uniformly and prevent creasing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If elastic support members are added to provide support force to the foldable portion, then the flatness and display quality are improved, but the device complexity increases
Solution Approach 1:
The support mechanism is segmented into multiple elastic portions distributed along the foldable portion, each elastic portion containing an elastic support member and connecting rods. This segmentation allows the support function to be distributed across multiple independent units, improving flatness while keeping each individual unit simple in structure.
Solution Approach 2:
The elastic support members are designed to be dynamic components that can deform and recover. They automatically adjust their support force based on the bending state of the foldable portion, providing necessary support when flattened while allowing smooth folding when needed, thus resolving the contradiction between maintaining flatness and enabling folding functionality.
2Manufacturing precision
If rigid support structures are added to prevent creasing, then the display quality is improved, but the flexibility and folding capability deteriorate
Solution Approach 1:
Rigid support bars are strategically positioned at specific locations where creasing is most likely to occur, rather than making the entire structure rigid. The first rigid support bar is disposed between the elastic support member and the foldable portion, while the second rigid support bar is connected to the flat portion. This localized rigidification provides necessary support to prevent creasing while maintaining overall flexibility for folding.
Solution Approach 2:
The support structure combines different types of support members with complementary characteristics: elastic support members that provide dynamic support force, rigid support bars that prevent creasing at critical locations, and soft support bars that cushion and protect the display panel. This composite approach allows the structure to simultaneously maintain display quality and folding capability by leveraging the advantages of each material type.
3Reliability
If multiple support bars are added to distribute stress, then the reliability is improved, but the device complexity increases
Solution Approach 1:
Soft support bars are introduced as intermediary components between the rigid support bars and the display panel. These soft support bars cushion and distribute the stress from the rigid support bars across a larger area of the display panel, preventing stress concentration while maintaining reliability. The soft support bars act as mediators that translate the rigid support structure's force into distributed, gentle support across the panel surface.
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 reduces the likelihood of creasing and improves the display quality by ensuring proper support and stress distribution across the foldable screen, allowing smooth transitions between states.
Implementation Method 1
the elastic support member is configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion is coplanar with that of the flat portion
Implementation Method 2
the elastic support member is a spring coil
Data Source
AI summary
Disclosed are a foldable screen and a display device. The foldable screen includes: a flexible display panel and a plurality of elastic portions, wherein each of the elastic portions includes each of elastic support members and two connecting rods fixedly connected to each of the elastic support members; wherein the two connecting rods are respectively connected to two flat portions of the flexible display panel, and the elastic support members are configured to supply a support force to the foldable portion in the case that a display surface of the foldable portion of the flexible display panel is coplanar with those of the flat portions.