Stretchable Display Electrode Layout for Image Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices lack the ability to stretch and maintain image display functionality when subjected to external forces, limiting their application in flexible and dynamic environments.
Innovation Solution
A stretchable display device design featuring a thin-film transistor substrate with island and bridge patterns, pixel electrodes made of carbon nanotubes or silver nanowires, and a display layer containing microcapsules with electrophoretic particles or light-emitting diode elements, allowing the device to stretch and return to its original shape while maintaining image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional display devices are used, then image display functionality is maintained, but the device cannot stretch or deform under external forces
Solution Approach 1:
The substrate is divided into multiple island patterns connected by bridge patterns, allowing the structure to stretch while maintaining electrical connections. The pixel electrodes are segmented into multiple regions corresponding to different islands, enabling the display function to be distributed across multiple segments that can independently accommodate deformation.
Solution Approach 2:
The display device incorporates flexible and stretchable components including carbon nanotube-based pixel electrodes and silver nanowire-based common electrodes that can dynamically deform. The bridge patterns are designed to be elastically deformable, allowing the structure to adapt to stretching forces while maintaining structural integrity and electrical connectivity.
2Reliability
If pixel electrodes are made larger to cover bridge patterns, then electrical connectivity is improved, but manufacturing precision becomes more difficult
Solution Approach 1:
Different regions of the pixel electrodes have different functions: some regions make contact with island patterns while others contact bridge patterns. The electrode material distribution and thickness are optimized locally to ensure proper electrical connection while maintaining the overall display performance and facilitating manufacturing processes.
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
Enables the display device to be suitably stretched by external forces without compromising image display capabilities, offering flexibility and adaptability in various applications, such as curved surfaces and vehicle interiors.
Implementation Method 1
The first pixel electrode, the second pixel electrode, and the common electrode may include carbon nanotubes, carbon nanoballs, or silver nanowires.
Implementation Method 2
The display layer may include microcapsules including at least two electrophoretic particles
Implementation Method 3
The display layer may include light-emitting diode elements
Data Source
AI summary
Provided is a stretchable display device. The stretchable display device according to one or more embodiments of the present disclosure includes a substrate including a first island pattern, a second island pattern, and a bridge pattern connecting the first island pattern and the second island pattern, a first pixel electrode above the first island pattern, and having an area that is greater than an area of the first island pattern, a second pixel electrode above the second island pattern, a display layer above the first pixel electrode and the second pixel electrode, and configured to display an image, and a common electrode above the display layer.