Stretchable Display Device With Dynamic Curved Reflective Mirrors
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Solution Overview
Problem
Conventional stretchable display devices experience a decrease in display quality due to the generation of dark zones between pixels when the device stretches, as the distance between light emitting units increases, leading to a reduction in image clarity.
Innovation Solution
Incorporating stretchable reflective mirrors with curved reflective sides that increase in curvature proportionally with the stretching of the substrate, ensuring that the exit angle of reflected light remains effective, thereby minimizing the formation of dark zones between pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the stretchable substrate is stretched to increase display area, then the display area is expanded, but dark zones are generated between pixels leading to reduced image clarity
Solution Approach 1:
The reflective mirror is designed to dynamically change its curvature in response to substrate stretching. When the substrate is stretched, the mirror's curvature increases automatically, which dynamically adjusts the light reflection angle to compensate for the increased pixel spacing and prevent dark zone formation.
Solution Approach 2:
The invention changes the physical parameter of the reflective mirror (curvature) in response to substrate stretching. By increasing the mirror's curvature proportionally with substrate stretch, the light reflection characteristics are adjusted to maintain image quality despite changes in display area.
2Length of moving object
If the distance between light emitting units increases during stretching, then the display area expands, but the exit angle of reflected light becomes ineffective causing dark zones
Solution Approach 1:
The reflective mirror's curvature is made dynamic rather than fixed. As the substrate stretches and increases the distance between light emitting units, the mirror's curvature automatically increases to maintain the appropriate exit angle for reflected light, preventing dark zones from forming.
Solution Approach 2:
The curved reflective mirror is designed in advance to counteract the harmful effect of increased pixel spacing. By pre-configuring the mirror with specific curvature characteristics, the system proactively compensates for the light distribution problems that would otherwise occur during 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 maintains image quality by adjusting the reflective mirrors' curvature in sync with the substrate's stretch, preventing dark zones and ensuring a consistent display even when the device is stretched.
Implementation Method 1
a plurality of reflective mirrors positioned to correspond to the light emitting units, respectively, and reflecting light emitted from the light emitting units, respectively
Data Source
AI summary
A stretchable display device includes: a stretchable substrate; a plurality of light emitting units on the stretchable substrate; and a plurality of reflective mirrors positioned to correspond to the light emitting units, respectively, and reflecting light emitted from the light emitting units, respectively.