Flexible Display Buffering Layer Gap Mechanism
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Solution Overview
Problem
Conventional flexible display components face cracking issues due to brittleness and sudden stress changes when bending, exacerbated by the use of bonding materials that restrict deformation and increase surface stress.
Innovation Solution
A flexible display component design featuring a display module, a buffering layer, and movable fixing parts that allow a gap to form between the buffering layer and the display module during bending, reducing stress transmission and protecting the module from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If bonding material is used to directly fix the buffering portion to the flexible display module, then the buffering portion is fixed in place, but the deformation space is limited causing sudden stress change and cracking risk
Solution Approach 1:
The buffering portion is divided into multiple buffering units that can independently deform, while the fixing portions are segmented and distributed at specific locations. This segmentation allows the buffering portion to maintain stability through distributed fixing while preserving local deformation capability to avoid stress concentration and cracking during bending.
2Device complexity
If bonding material is used to fix the buffering portion, then the structure is simplified, but the neutral plane location changes increasing surface stress
Solution Approach 1:
The buffering portion is extracted from direct contact with the flexible display module at most regions, creating a gap between them. Only at specific fixing portions are they connected through fixing units. This extraction prevents the buffering portion from constraining the neutral plane displacement, thereby reducing surface stress while maintaining overall structural integrity.
3Strength
If the buffering portion is made thicker to improve protection, then protection capability increases, but the neutral plane location shifts increasing cracking risk
Solution Approach 1:
The buffering portion uses a foam material with locally varied density or stiffness characteristics. The buffering units have different thicknesses or densities at different locations, providing enhanced protection where needed while maintaining flexibility and neutral plane stability in critical bending regions, thus avoiding cracking risk.
Data Source
AI summary
A flexible display component and a display screen are provided. The flexible display component includes a display module; a buffering layer; and at least two fixing parts disposed at the display module for fixing the buffering layer to be movably fixed to a side of the display module, wherein, when the display module is under a natural status, the buffering layer is contacted with the display module, when the display module is under a bending status, a gap layer is existed between the buffering layer and the display module. Through above way, the present invention can improve the bending reliability of the display module.