Flexible Display Curvature Tuning With Shape-Memory Metal Anchors
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Solution Overview
Problem
Traditional flat-panel displays lack the ability to provide optimal viewing angles for multiple users simultaneously due to their single display plane, and there is a need to control the bending/folding deformation degree of flexible display panels to maintain mechanical reliability and desired curvature.
Innovation Solution
Incorporation of shape-memory metal elements anchored to a flexible display panel, which deform at specific temperatures to control the curvature and angle, combined with elastic sheets or springs to ensure mechanical reliability and return to the original shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional flat-panel display is used, then the structure is simple and manufacturing is easy, but it cannot provide optimal viewing angles for multiple users simultaneously
Solution Approach 1:
The display panel is designed to be dynamically changeable between flat and curved states. Shape memory metal elements are integrated into the display structure, allowing it to adapt its curvature based on viewing requirements. This dynamic transformation enables the display to provide optimal viewing angles for multiple users while maintaining a relatively simple base structure that can be controlled to change configuration.
2Adaptability or versatility
If the flexible display panel is bent or folded to change curvature, then multiple viewing angles are achieved, but controlling the deformation degree and maintaining mechanical reliability becomes difficult
Solution Approach 1:
The patent utilizes temperature as a control parameter to activate shape memory metal elements. By changing the temperature, these elements undergo phase transformation that precisely controls the bending degree of the display panel. This parameter-based control mechanism allows for repeatable and reliable curvature adjustment while maintaining mechanical integrity through controlled deformation within elastic limits.
Solution Approach 2:
The display structure combines flexible display panel materials with shape memory metal elements to create a composite system. This composite structure leverages the flexibility of the panel and the shape memory effect of the metal elements, enabling controlled deformation that maintains mechanical reliability while achieving the desired curvature for different viewing scenarios.
3Manufacturing precision
If shape-memory metal elements are added to control bending, then precise curvature control is achieved, but device complexity increases
Solution Approach 1:
The shape memory metal elements are segmented and strategically positioned at specific locations on the display panel rather than uniformly distributed. This segmentation allows precise control of curvature at key areas while minimizing the total quantity of additional components. The segmented approach enables targeted deformation control to achieve the desired curvature precision without unnecessarily increasing overall device complexity.
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
Precise control over bending deformation allows for diverse curvature and angle adjustments, ensuring good visual quality from any angle while maintaining mechanical reliability.
Implementation Method 1
the first shape-memory metal element has a first long axis, one end of the first long axis is anchored to a first position of the flexible display panel, and the other end of the first long axis is anchored to a second position of the flexible display panel. When the first shape-memory metal element is at a first temperature, a first deformation occurs along the first long axis to drive the flexible display panel having a first curvature radius.
Implementation Method 2
combined with elastic sheets or springs to ensure mechanical reliability and return to the original shape
Data Source
AI summary
A flexible display apparatus includes a flexible display panel and a first shape-memory metal element. The flexible display panel has a long side direction. The first shape-memory metal element has a first long axis, one end of the first long axis is anchored to a first position of the flexible display panel, and the other end of the first long axis is anchored to a second position of the flexible display panel. Wherein, the first position and the second position are arranged along a first connecting direction parallel to the long side direction of the flexible display panel. When the first shape-memory metal element is at a first temperature, a first deformation occurs along the first long axis, and drives the flexible display panel to have a first curvature radius.