Stretchable Display Panel With Varying Young's Modulus Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current stretchable display technologies face challenges in maintaining image display resolution and protecting thin film transistors when transitioning between non-stretched and stretched states, as the elastic regions lack light emitting elements, leading to decreased performance and potential damage.
Innovation Solution
A stretchable display panel with alternating regions of main and auxiliary pixels, where main pixels are active in both states and auxiliary pixels are inactive in the non-stretched state but active in the stretched state, utilizing a stretchable base substrate with varying Young's modulus and flexible signal lines to connect light emitting elements and transistors, ensuring protection and maintaining resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel uses a uniform structure across all regions, then the manufacturing process is simple, but the panel cannot achieve both rigidity for protecting thin film transistors and flexibility for stretching
Solution Approach 1:
The display panel is divided into first regions containing thin film transistors with higher Young's modulus for rigidity and second regions without thin film transistors with lower Young's modulus for flexibility. This local differentiation allows each region to have optimized properties for its specific function, resolving the contradiction between protecting transistors and enabling stretchability.
2Reliability
If light emitting elements are placed only in rigid regions, then the transistors are protected, but the display resolution decreases when stretched
Solution Approach 1:
The display panel is segmented into multiple independent pixel regions (first regions with main pixels and second regions with auxiliary pixels). When stretched, auxiliary pixels in the second regions become active to compensate for the expansion, maintaining overall display resolution while allowing the rigid first regions to protect their transistors.
Solution Approach 2:
The display panel dynamically activates different pixel sets based on stretching state. In non-stretched state, only main pixels in first regions are active. In stretched state, auxiliary pixels in second regions are activated alongside main pixels, adapting the display functionality to maintain resolution throughout the stretching process.
3Adaptability or versatility
If the panel is designed to be highly flexible, then stretchability is improved, but the thin film transistors are vulnerable to damage
Solution Approach 1:
Different regions of the panel have different Young's modulus values. First regions with thin film transistors have higher Young's modulus (greater rigidity) to protect the transistors, while second regions without transistors have lower Young's modulus (greater flexibility) to enable stretching. This spatial variation in material properties resolves the contradiction between flexibility and transistor durability.
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 enables consistent image display resolution across states and enhances the display panel's flexibility and durability by isolating thin film transistors in rigid regions and using flexible materials for light emitting elements in elastic regions.
Implementation Method 1
the stretchable display panel in the plurality of first regions have a Young's modulus greater than a Young's modulus in the plurality of second regions of the stretchable display panel
Data Source
AI summary
A stretchable display panel has a plurality of first regions and a plurality of second regions alternately arranged. The stretchable display panel includes a plurality of first light emitting elements and a plurality of first driving circuits for driving light emission of the plurality of first light emitting elements; and a plurality of second light emitting elements and a plurality of second driving circuits for driving light emission of the plurality of second light emitting elements. The plurality of first light emitting elements, the plurality of first driving circuits, and the plurality of second driving circuits are limited in the plurality of first regions. The plurality of second light emitting elements are limited is the plurality of second regions. The stretchable display panel in the plurality of first regions have a Young's modulus greater than a Young's modulus in the plurality of second regions of the stretchable display panel.