Repairable Conductive Layers for Flexible Display Substrates
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Solution Overview
Problem
Flexible structure assemblies in flexible display devices tend to be damaged or fail during deformation due to limited material options, making them less flexible than the underlying substrate.
Innovation Solution
A flexible display substrate with electrically conductive structure assemblies that include a repairing layer formed by a first repairable conductive material and a circuit device layer formed by a second conductive material, which are in electrical communication and can be repaired through pressurization or heating, using materials like nickel, nickel-titanium alloy, or conductive gel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible structure assemblies are formed by conventional conductive materials, then electrical conductivity is achieved, but flexibility and resistance to damage during deformation are insufficient
Solution Approach 1:
The patent changes the physical and chemical parameters of the conductive material by using a repairable conductive material that can undergo phase transitions or property changes in response to damage. This material can be repaired by applying heat, pressure, or other stimuli to restore its conductive properties after deformation-induced damage, thereby maintaining both flexibility and reliability.
Solution Approach 2:
The patent employs a composite structure consisting of a repairable conductive material that combines the electrical conductivity of traditional materials with the damage resistance and repairability of advanced materials. This composite approach allows the flexible structure assembly to maintain conductivity while withstanding deformation and enabling self-repair capabilities.
2Ease of manufacture
If flexible structure assemblies use limited material options, then manufacturing constraints are met, but flexibility and durability are compromised
Solution Approach 1:
The patent utilizes repairable conductive materials whose properties can be modified through external stimuli such as heat, pressure, or electrical fields. This allows a single material system to provide multiple functions including conductivity, flexibility, and self-repair, reducing the need for multiple different materials while maintaining high reliability.
3Stability of the object's composition
If flexible structure assemblies are made less flexible to ensure structural integrity, then stability is improved, but susceptibility to damage during deformation increases
Solution Approach 1:
The patent incorporates a repairable conductive material that acts as a cushion against permanent damage. When deformation occurs, the material can absorb the mechanical stress and then be repaired by applying appropriate stimuli, preventing cumulative damage while maintaining structural stability during normal operation.
Solution Approach 2:
The repairable conductive material can change its physical parameters in response to stress, becoming more compliant during deformation and then restoring its original properties after repair, thus balancing structural stability with damage resistance.
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 repairable conductive materials enhance the flexibility and stability of the flexible structure assemblies, reducing the likelihood of failure and allowing for self-repair during deformation, thereby improving the operational stability of the flexible display device.
Implementation Method 1
a first repairable conductive material which is repairable by at least one of pressurization and heating
Data Source
AI summary
A flexible display substrate, a flexible display device, and a method for repairing the same are disclosed in embodiments of the disclosure, all belonging to a technical field of display. The flexible display substrate comprises: an underlying substrate; and a plurality of flexible structure assemblies provided on the underlying substrate, each of which is electrically conductive; at least one of the plurality of flexible structure assemblies comprises at least one repairing layer formed by a first conductive material which is repairable and at least one circuit device layer formed by a second conductive material, the circuit device layer and the repairing layer being provided to overlap with each other.