Stretchable Quantum Dot Display Structure for Bending Reliability
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Solution Overview
Problem
Current display devices lack flexibility and efficiency, particularly in terms of luminous efficiency and reliability, especially when used in bent or extended states, as they require separate light sources and suffer from light loss and power inefficiency.
Innovation Solution
A stretchable display device featuring a quantum dot-enhanced light emitting diode (LED) with a stable low potential voltage supply, integrated into a flexible substrate structure that includes a lower and upper substrate with pattern layers, improving luminous efficiency and reliability while minimizing light loss and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible substrate is used to enable stretching, then flexibility and adaptability are improved, but structural stability and manufacturing precision deteriorate
Solution Approach 1:
The display device is divided into multiple independent layers including lower substrate, lower plate patterns, quantum dot layer, upper substrate, and upper plate patterns. Each layer can be manufactured separately with high precision and then assembled, allowing the overall structure to be flexible while maintaining manufacturing precision for each component
Solution Approach 2:
The patent employs flexible substrates and thin film structures throughout the display device construction. The lower substrate, upper substrate, and various plate patterns are designed as flexible thin structures that enable stretching while maintaining structural integrity through careful material selection and layer design
2Ease of manufacture
If conventional light sources are used, then ease of manufacture is maintained, but luminous efficiency and power consumption are poor
Solution Approach 1:
The patent replaces conventional mechanical light sources with quantum dot-based light emission structures. The quantum dot layer converts electrical energy directly to light through electroluminescence, eliminating the need for separate light sources and improving luminous efficiency while maintaining ease of integration into the display structure
Solution Approach 2:
The quantum dot layer enables precise control of light emission parameters including wavelength, intensity, and efficiency. By adjusting quantum dot size and composition, the system achieves high luminous efficiency and optimized power consumption while maintaining compatibility with existing manufacturing processes
3Adaptability or versatility
If the display device is stretched or bent, then flexibility and adaptability are improved, but image quality and reliability deteriorate
Solution Approach 1:
The segmented multi-layer structure allows each layer to deform independently during stretching or bending, reducing stress concentration and preventing image quality degradation. The flexible substrates and plate patterns are designed to accommodate deformation while maintaining the integrity of the display function
Solution Approach 2:
The flexible substrate structure and layered design provide inherent cushioning against mechanical stress. The structure is designed beforehand to accommodate stretching and bending without compromising the reliability of the display function or image quality
4Loss of energy
If light loss is reduced to improve luminous efficiency, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The quantum dot layer is integrated directly into the display structure, merging the light emission function with the display structure itself. This eliminates the need for separate light sources and reduces light loss through unnecessary interfaces, improving luminous efficiency without significantly increasing device complexity
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 enhances the display device's flexibility, luminous efficiency, and reliability by maintaining image quality even in bent or extended states, reducing light loss, and operating with low power, thus addressing the limitations of traditional display technologies.
Implementation Method 1
a light emitting diode with a quantum dot... Each of the plurality of pixels includes a plurality of light emitting diodes. The display device includes a quantum dot layer disposed in at least one of the plurality of light emitting diodes
Data Source
AI summary
According to an aspect of the present disclosure, a display device includes a stretchable lower substrate. The display device includes a plurality of lower plate patterns disposed on the lower substrate. The display device includes a plurality of pixels disposed on the plurality of lower plate patterns. Each of the plurality of pixels includes a plurality of light emitting diodes. The display device includes a quantum dot layer is disposed in at least one of the plurality of light emitting diodes. By doing this, a luminous efficiency and a reliability of the display device may be improved.