Stretchable Display Diffusion Layer for Resolution Retention
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Solution Overview
Problem
Stretchable display devices experience a decrease in resolution when stretched, which is not effectively addressed by existing technologies.
Innovation Solution
A stretchable display device design that includes a lower substrate, a reflective layer, pixels generating light, and a diffusion layer between the pixels and the reflective layer, with a specific arrangement of light emitting diodes and diffusion layers to maintain resolution during stretching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display device is stretched to increase area and portability, then the display area and flexibility are improved, but the resolution decreases
Solution Approach 1:
The diffusion layer is divided into multiple diffusion regions with different diffusion coefficients. Each diffusion region is responsible for diffusing light in a specific direction or area, allowing the display to maintain resolution while being stretched. The segmentation of the diffusion layer enables independent control of light diffusion in different zones, preventing resolution degradation during stretching.
Solution Approach 2:
Different regions of the diffusion layer are assigned different diffusion coefficients tailored to their specific functions. The first diffusion region has a different diffusion coefficient than the second diffusion region, allowing each region to optimize light diffusion locally. This local quality differentiation ensures that resolution is maintained in critical areas while allowing overall stretching of the display.
2Device complexity
If a simple diffusion layer is used, then the device complexity is reduced, but the ability to maintain resolution during stretching is insufficient
Solution Approach 1:
The diffusion layer is segmented into multiple diffusion regions with distinct diffusion coefficients. This segmentation provides a relatively simple structural addition while achieving the complex function of maintaining resolution during stretching. Each diffusion region can be implemented as a separate layer or zone, keeping the overall structure manageable.
Solution Approach 2:
The diffusion coefficient parameter is varied across different regions of the diffusion layer. By changing the diffusion coefficient parameter spatially, the system achieves advanced resolution maintenance functionality without requiring complex mechanical or electronic structures. This parameter-based solution keeps the device structure relatively simple while achieving sophisticated light control.
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 device minimizes the decrease in resolution when stretched by effectively diffusing and reflecting light across the reflective layer, ensuring consistent display quality.
Implementation Method 1
a diffusion layer which is provided between the pixels and the reflective layer, and diffuses the light onto the reflective layer
Implementation Method 2
a reflective layer on the lower substrate... diffuses the light onto the reflective layer
Data Source
AI summary
The present disclosure provides a stretchable display device. The stretchable display device according to an embodiment of the inventive concept includes a lower substrate, a reflective layer on the lower substrate, pixels provided on the reflective layer to generate light, and a diffusion layer which is provided between the pixels and the reflective layer and diffuses the light onto the reflective layer.