Flexible Display Rigidity Transformation Layer
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Solution Overview
Problem
Flexible display devices suffer from damage and irreversible deformation during manual rolling/folding processes, leading to uneven substrates and reduced display quality and reliability due to creasing or warping after long-term storage.
Innovation Solution
A flexible display device with a flexibility-rigidity transformation layer, comprising an electrode layer and a transformation film that changes states under an electric field, allowing the substrate to flatten and then revert to a flexible state for easy rolling or bending, thereby reducing damage and maintaining display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual rolling-up or folding is used to achieve flexibility and portability, then the display device can be easily stored and transported, but the substrate materials are damaged leading to irreversible deformation, creasing, and warping
Solution Approach 1:
The patent applies a dynamic rigidity control mechanism where the support layer can dynamically change its rigidity between a first rigidity state (when energized) and a second rigidity state (when not energized). This dynamic property allows the substrate to be rigid during operation to prevent deformation and flexible during storage to enable rolling/folding, resolving the contradiction between operational reliability and ease of operation.
Solution Approach 2:
The patent changes the physical parameter of rigidity of the support layer by applying or removing electrical energy. When electrical energy is applied, the support layer transitions to a higher rigidity state to prevent substrate deformation; when energy is removed, it transitions to a lower rigidity state to allow flexible rolling. This parameter change enables the substrate to adapt between operational and storage states, resolving the contradiction between maintaining substrate integrity and enabling manual folding.
2Ease of operation
If the substrate is kept flexible for repeated rolling and unfolding, then portability is maintained, but the substrate becomes uneven and display quality deteriorates
Solution Approach 1:
The support layer provides dynamic rigidity support that is activated when needed. During repeated rolling and unfolding operations, the support layer can be energized to maintain substrate flatness and prevent unevenness, then de-energized to allow flexible rolling. This dynamic support mechanism preserves both substrate flatness and repeated rolling capability.
Solution Approach 2:
The support layer is positioned and configured in advance to provide support to the substrate before deformation occurs. By having the support layer pre-installed with the capability to change rigidity, the substrate is protected from unevenness during the rolling and unfolding process, preventing rather than correcting deformation issues.
3Manufacturing precision
If a rigid support structure is used to maintain substrate flatness, then display quality is improved, but the device loses flexibility and cannot be rolled or bent
Solution Approach 1:
The support layer transitions from a static rigid structure to a dynamic structure that can adjust its rigidity. When electrical energy is applied, the support layer becomes rigid to maintain substrate flatness for high-quality display; when energy is removed, it becomes flexible to allow rolling and bending. This dynamic adaptability resolves the contradiction between substrate flatness and flexibility.
Solution Approach 2:
The rigidity parameter of the support layer is changed through electrical energy application. In the first rigidity state (energized), the support layer maintains high rigidity to ensure substrate flatness and display quality; in the second rigidity state (de-energized), it transitions to low rigidity to enable flexible rolling and bending operations.
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 solution extends the service life of the display device, improves display quality, and enhances reliability by minimizing substrate damage during repeated rolling and unfolding processes while allowing for flexible use and storage.
Implementation Method 1
the transformation film capable of transforming between a flexiblity state and a rigidity state under the action of an electric field; and the electrode layer is used for generating the electric field
Data Source
AI summary
A flexible display device relating to the technical field of displays. The flexible display device comprises: a flexible substrate; a flexible rigid transformative layer, formed at one side of the flexible substrate, comprising a transformative film capable of transforming between a flexible and a rigid state under the action of an electric field; and an electrode layer for forming the electric field used to drive changes in the transformative film.