Organic Silicon Electroluminescent Layer for Flexible Displays
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Solution Overview
Problem
Existing electroluminescent devices lack small angle bending ability, high voltage working stability, and have complex structures that result in lower EL intensity and higher drive voltage, making them unsuitable for various practical applications.
Innovation Solution
An organic silicon electroluminescent display device comprising a protective layer, a transparent conductive layer, and a basic conductive layer, where the organic silicon electroluminescent layer is made by mixing electroluminescent materials with organic silicon resin or rubber, allowing for high brightness and elasticity, enabling bending, folding, and stretching to produce light without a conventional driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electroluminescent devices use traditional substrate materials (epoxy resin, cyanoethyl sugar, inorganic enamel, plastic), then the device structure is stable, but the device lacks small angle bending ability and high voltage work ability
Solution Approach 1:
The patent uses organic silicon material as a composite substrate that combines the flexibility needed for bending with the electrical properties required for high voltage operation. This composite material approach resolves the contradiction between adaptability (bending ability) and reliability (high voltage work ability) by integrating multiple functional properties into a single substrate system.
Solution Approach 2:
The patent changes the fundamental material parameters of the substrate from conventional rigid materials to organic silicon-based flexible materials. This parameter change enables both small angle bending capability and maintained high voltage performance, simultaneously improving adaptability while preserving reliability.
2Reliability
If electroluminescent devices include conductive adhesive layer, then the device structure is complete, but the structure becomes complex resulting in lower EL intensity and higher drive voltage
Solution Approach 1:
The patent merges the substrate function and conductive adhesive function into a single organic silicon-based layer. This consolidation eliminates the need for separate conductive adhesive layers, reducing structural complexity while maintaining both structural completeness and electrical conductivity required for device operation.
Solution Approach 2:
The organic silicon substrate serves multiple functions simultaneously: it provides mechanical support, enables flexibility, and provides conductive pathways. This multi-functionality reduces the number of required components, simplifying the overall device structure while maintaining complete functionality.
3Ease of manufacture
If electroluminescent devices use conventional materials, then the device is easy to manufacture, but the EL intensity is lower and power consumption is higher
Solution Approach 1:
The patent changes the material composition parameters to organic silicon-based materials that inherently provide higher electroluminescence efficiency. These material parameter changes result in increased EL intensity and reduced power consumption while maintaining manufacturing processes that are compatible with existing fabrication techniques.
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 achieves high brightness, long life, low power consumption, and high voltage resistance, suitable for applications in light emission, display, and illumination, including flexible displays and safety instructions, with improved tensile strength and bending resistance.
Implementation Method 1
when an electric field is applied to both the transparent conductive layer and the basic conductive layer, the organic silicon electroluminescent layer with elasticity is bent, folded and pressed, and stretched to produce the light with high brightness
Data Source
AI summary
An organic silicon electroluminescent display device includes a protective layer, a transparent conductive layer, an organic silicon electroluminescent layer and a basic conductive layer, which are combined to prepare a flat flaky or continuous wire or matrix point electroluminescent device. The basic conductive layer is made from a conductive material with good electroconductibility; the organic silicon electroluminescent layer is prepared through mixing an electroluminescent material with a resin or rubber material containing organic silicon; the transparent conductive layer is made from a conductive material with good electroconductibility; the organic silicon electroluminescent layer is located between the transparent conductive layer and the basic conductive layer; when an electric field is applied to both the transparent conductive layer and the basic conductive layer, the organic silicon electroluminescent layer with elasticity is bent, folded and pressed, and stretched to produce light with high brightness.