Multi-segment Rolling Elements for Flexible Display Modules
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Solution Overview
Problem
The roller of the sliding screen in flexible display modules is prone to deformation, leading to jamming and increased sliding load due to the initial tension applied to the flexible display panel.
Innovation Solution
A flexible display module design that replaces traditional rollers with multi-segment rolling elements, which are evenly stressed and supported, reducing the likelihood of deformation and jamming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If initial tension is applied to the flexible display panel to eliminate curl marks, then the curl marks are eliminated, but the roller is deformed causing jamming and increased sliding load
Solution Approach 1:
The roller is divided into multiple rolling elements arranged in sequence along the axial direction, with each rolling element supported at both ends on the fixing bracket. This segmentation distributes the tension force evenly across multiple support points, preventing deformation at any single location while maintaining the ability to eliminate curl marks through initial tension application.
2Device complexity
If a single long roller is used to support the flexible display panel, then the structure is simple, but the roller is prone to deformation under initial tension
Solution Approach 1:
The roller is segmented into multiple rolling elements supported at both ends, transforming the single long support structure into multiple shorter supported segments. This reduces the span between support points, increasing the bending moment capacity and resistance to deformation under initial tension while maintaining structural simplicity.
Solution Approach 2:
The support structure transitions from a single-point suspension to a distributed multi-point support system along the axial dimension. By adding support points in the axial direction, the structural rigidity is enhanced without increasing the radial or lateral complexity of the roller design.
3Device complexity
If the roller is suspended in the middle to reduce complexity, then the structure is simpler, but the roller deforms and causes jamming
Solution Approach 1:
The roller is segmented into multiple elements with intermediate support points, eliminating the suspended middle section. Each rolling element is supported at both ends, ensuring continuous contact with the fixing bracket and preventing rotation jamming while maintaining operational smoothness.
Solution Approach 2:
The rolling elements are pre-supported at both ends on the fixing bracket before operation. This preliminary support configuration prevents deformation during the initial tension application and subsequent operation, ensuring smooth rotation from the outset without requiring complex active correction mechanisms.
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 use of multi-segment rolling elements prevents deformation and jamming, resulting in reduced sliding load and improved smooth operation of the flexible display module.
Implementation Method 1
each of the rolling elements is rotatably connected to the fixing bracket
Data Source
AI summary
A flexible display module and an electronic device are provided. The flexible display module includes a fixing bracket; a rolling unit disposed on the fixing bracket. The rolling unit includes at least two rolling elements, axial directions of the at least two rolling elements are parallel to each other, and the at least two rolling elements are arranged in sequence along the axial directions, each of the rolling elements is rotatably connected to the fixing bracket, and both ends of each of the rolling elements are supported on the fixing bracket.