Flexible Display Device with Elastic Insulators for Aspect Ratio Adjustment
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Solution Overview
Problem
Flexible display devices face limitations in maintaining image quality when stretched due to the degradation of light-emitting elements and circuit components, leading to reduced pixel density and display resolution.
Innovation Solution
A display device design that allows for adjustable aspect ratio and area changes through modular units with overlapping light-emitting portions and driver circuits, utilizing elastic insulators to maintain display quality by redistributing light-emitting areas during stretching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible substrate is stretched to change the display device shape, then the display device can be reshaped to different aspect ratios, but the pixel density decreases and display resolution is reduced
Solution Approach 1:
The display device is divided into multiple independently controllable light-emitting units (pixels) that can be selectively activated. When the substrate is stretched, the system segments the display area and redistributes active pixels to maintain optimal pixel density in different regions, preventing overall resolution degradation.
Solution Approach 2:
The display device implements dynamic pixel activation and deactivation based on the current stretched state. As the substrate changes shape, the system dynamically adjusts which pixels are active and their brightness levels to compensate for changes in pixel density, maintaining display quality across different aspect ratios.
2Area of stationary object
If the flexible substrate is stretched excessively, then the display device can achieve larger area, but the light-emitting elements and circuit components may be damaged
Solution Approach 1:
The patent implements beforehand cushioning by designing the substrate and component mounting structure to accommodate stretching within safe limits. The substrate material and component attachment methods are selected to provide a cushioning effect that prevents damage up to a certain stretch threshold, allowing area expansion while protecting component integrity.
3Adaptability or versatility
If the display device is stretched, then the aspect ratio can be changed for different applications, but the light emission intensity per unit area decreases
Solution Approach 1:
The system changes operational parameters (pixel activation patterns, brightness levels, and timing) in response to substrate stretching. By dynamically adjusting these parameters, the display maintains appropriate light emission intensity per unit area even as the physical dimensions and aspect ratio change, compensating for the dilution effect of stretching.
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 flexible display devices to maintain high image quality even when reshaped, as the elastic insulators and modular design ensure consistent light distribution and pixel density during stretching.
Implementation Method 1
utilizing elastic insulators to maintain display quality by redistributing light-emitting areas during stretching
Data Source
AI summary
A display device whose aspect ratio can be changed is provided. The display device includes a plurality of display units and a plurality of driver circuit units. The plurality of display units each include a light-emitting portion and a connection region. The plurality of driver circuit units each include a driver circuit portion and a connection region. The connection regions of the adjacent units overlap with each other and one shaft passes through the connection regions. The adjacent units are electrically connected to each other with the one shaft. With such a structure, an angle between the adjacent units electrically connected to each other with one shaft can be changed, which enables the aspect ratio of the display device to be changed.