Stretchable Display Panel Anti-Deformation Layer
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Solution Overview
Problem
Existing stretchable OLED display panels face issues with deformation of pixel islands when stretched, leading to reduced display effect and reliability.
Innovation Solution
A stretchable display panel design featuring pixel islands connected by stretchable bridges, with an anti-deformation layer on the periphery of the pixel islands to prevent shape change under stress, ensuring consistent edge shape and improved reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stretchable display panel is stretched to enable flexible display, then the adaptability and flexibility are improved, but the pixel islands deform and the display effect deteriorates
Solution Approach 1:
The display panel is divided into pixel islands separated by stretchable bridges. The pixel islands are rigid structures that maintain their shape, while the stretchable bridges are flexible connections that allow stretching. This segmentation enables the panel to be stretched without deforming the pixel islands, resolving the contradiction between flexibility and shape consistency.
Solution Approach 2:
Different regions of the display panel have different mechanical properties. The pixel islands are made rigid to maintain shape consistency, while the stretchable bridges are made flexible to enable stretching. This local differentiation of mechanical properties allows the panel to achieve both flexibility and shape consistency in different regions.
2Adaptability or versatility
If the stretchable display panel is stretched, then the flexibility is improved, but the reliability deteriorates due to pixel island deformation
Solution Approach 1:
The display panel is segmented into rigid pixel islands and flexible stretchable bridges. This segmentation allows the panel to be stretched through the flexible bridges while the rigid pixel islands maintain their shape and function, ensuring display reliability during stretching operations.
Solution Approach 2:
Instead of making the entire pixel island structure flexible, the patent inverts the approach by making the connecting bridges flexible while keeping the pixel islands rigid. This inversion allows the stretching function to be achieved without compromising the reliability of the pixel islands.
3Device complexity
If the pixel islands are connected directly without stretchable bridges, then the device complexity is reduced, but the flexible display capability is lost
Solution Approach 1:
The connection structure is segmented into rigid pixel islands and flexible stretchable bridges. This segmentation adds the necessary flexibility for stretchable display while maintaining relative simplicity in the overall design. The stretchable bridges serve as simple yet effective flexible connectors between pixel islands.
4Manufacturing precision
If the pixel islands are made larger to improve display quality, then the display effect is improved, but the deformation under stress increases
Solution Approach 1:
The display panel is segmented into multiple pixel islands of optimized size, connected by stretchable bridges. This segmentation allows each pixel island to maintain its shape stability while the overall panel achieves high display quality through the array of islands. The stretchable bridges isolate the deformation, preventing stress from affecting the pixel island shapes.
Solution Approach 2:
The stretchable bridges act as intermediaries between pixel islands, absorbing the stress and deformation that would otherwise affect the pixel islands. This intermediary structure allows larger pixel islands to be used for better display quality while the bridges protect them from deformation under stress.
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 anti-deformation layer enhances the display effect and reliability of the stretchable display panel by maintaining pixel island shape and reducing deformation, even under stress, thereby improving display quality and user experience.
Implementation Method 1
The anti-deformation layer has a first elastic modulus, and the stretchable bridge has a second elastic modulus, wherein the first elastic modulus is greater than the second elastic modulus
Data Source
AI summary
A stretchable display panel is provided, and includes pixel islands; and stretchable bridges each of which connects two adjacent ones of the pixel islands. An edge of each of the pixel islands includes at least one first edge portion and a second edge portion other than the at least one first edge portion, and the at least one first edge portion connects the pixel island and corresponding ones of the stretchable bridges. The stretchable display panel further includes an anti-deformation layer disposed at least partially on a periphery of the second edge portion.