Flexible Display Roller Mechanism for Uniform Deformation
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Solution Overview
Problem
Flexible display devices that change size by sliding two bodies relative to each other face challenges in fully spreading or bending due to plastic deformation and springback, limiting their usability and stability.
Innovation Solution
A flexible display device design featuring a body with sliding components, a roller, and support bars that engage protrusions, allowing the flexible display to change shape and area by rotating the roller, which moves in sync with the sliding components, maintaining a stable U-shape and preventing unintended bending or curving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible display is bent into a U-shape for storage, then the device size is reduced, but the display cannot be fully spread out due to plastic deformation and springback
Solution Approach 1:
The support structure is divided into multiple support bars that can independently engage with protrusions on the roller, allowing each segment to provide localized support and prevent plastic deformation in specific areas of the display
Solution Approach 2:
The support bars are positioned to engage with the roller protrusions before the display is fully bent or unfolded, preemptively preventing plastic deformation and springback effects that would otherwise occur during the deformation process
2Volume of moving object
If the flexible display is stored bent for long periods, then compactness is achieved, but the display deformation becomes unstable
Solution Approach 1:
The support bars provide preemptive cushioning support at critical bending points, preventing cumulative damage and instability that would occur during prolonged storage in a bent state
Solution Approach 2:
The roller acts as an intermediary component between the support bars and the flexible display, mediating the mechanical interaction and enabling stable engagement during both storage and operation
3Adaptability or versatility
If sliding components are used to change device size, then adaptability is improved, but unintended bending and curving occur
Solution Approach 1:
The support bars provide localized quality control at specific points along the display, ensuring that only the necessary portions are supported during sliding operations while maintaining overall shape stability
Solution Approach 2:
The support structure transitions from a static configuration to a dynamic one where support bars can engage and disengage from roller protrusions based on the operational state, adapting to provide support only when and where needed
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
Enables the flexible display to change size effectively while maintaining stability and preventing unintended deformation, enhancing its usability and operational reliability.
Implementation Method 1
a roller (400) that rotates about a rotational shaft
Implementation Method 2
springback, and/or elasticity of the flexible display
Implementation Method 3
plastic deformation occurring in a part of the flexible display
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
A flexible display device is disclosed. The flexible display device includes a first body, a second body, a roller, and a flexible display. The flexible display includes a first region forming a plane surface and a second region of which a portion forms a curved surface around the roller. A plurality of engagement protrusions are formed on an outer circumferential surface of the roller, and a plurality of support bars are coupled to an inner surface of the second region. The engagement protrusions engage the support bars. When the second body moves relative to the first body, the roller rotates with the engagement protrusions engaging the support bars, and the second region is uniformly deformed and moves.