Flexible Display Module Support Element With Patterned Holes
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Solution Overview
Problem
Existing rollable display modules suffer from poor flatness recovery after being rolled and unfolded, with existing solutions failing to effectively address the issue of creases and film layer separation during the bending and curling process.
Innovation Solution
A flexible display module design featuring a support element with a glue layer and patterned stainless steel support plates, including through holes and blind holes, optimized to distribute stress uniformly and improve bending and curling performance, ensuring better flatness recovery and reducing the risk of film layer separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the thickness of the SUS is reduced to improve bendability, then the bending radius decreases, but the recovery of flatness after unfolding becomes poor
Solution Approach 1:
The patent divides the support plate into multiple segments by creating through holes and blind holes in the curled area. This segmentation reduces the continuous material structure into discrete segments that can flex more easily during bending while maintaining overall structural integrity, thereby improving bendability without sacrificing flatness recovery
Solution Approach 2:
The patent applies different structural characteristics to different areas of the support plate. The curled area contains through holes and blind holes to enhance flexibility, while other areas maintain the original continuous structure for structural support. This local differentiation allows the support plate to achieve both good bendability in the curled region and overall flatness recovery
2Shape
If the thickness of the SUS is increased to improve flatness recovery, then the bending radius increases, but the bendability deteriorates
Solution Approach 1:
By segmenting the support plate structure through holes in the curled area, the patent enables thinner SUS to achieve adequate flatness recovery. The segmented structure prevents excessive deformation and maintains structural integrity during bending, allowing reduced thickness while preserving both bendability and flatness recovery
3Adaptability or versatility
If the SUS is patterned in the curled area to reduce elastic modulus, then the bendability improves, but the flatness recovery after curling remains poor
Solution Approach 1:
The patent strategically places through holes and blind holes only in the curled area of the support plate, creating local structural modifications. This local quality approach reduces the elastic modulus specifically where needed for bending while maintaining the structural integrity and flatness recovery capability in other areas of the support plate
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 design enhances the bending performance, extensibility, and reliability of the flexible display module, improving flatness recovery and reducing the risk of film layer separation, while maintaining sufficient support and stiffness for the OLED screen.
Implementation Method 1
a support element with a glue layer and patterned stainless steel support plates, including through holes and blind holes, optimized to distribute stress uniformly
Implementation Method 2
A method of removing continuity of a material in a thickness direction of the SUS is configured to reduce an elastic modulus in a bending direction and improve the bendability
Data Source
AI summary
The present disclosure provides a flexible display module including a flexible display panel and a support element. The support element includes a glue layer, and a first support plate and a second support plate respectively disposed on two opposite sides of the glue layer. The first support plate includes a first flexible part disposed in the flexible area, and the first flexible part includes a plurality of first through holes. The second support plate includes a plurality of second flexible parts disposed in the flexible area, and the second flexible part includes a plurality of blind holes.