Organic Light Emitting Device with Wavelength Converting Layers
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Solution Overview
Problem
Current electronic devices for skin management and treatments are in their initial stages and lack customization for various individuals, particularly in addressing inflammation and skin regeneration needs across different ethnic groups and skin thicknesses, with limited effectiveness and long-term light source durability.
Innovation Solution
An electronic device with a light emission area and non-light emission area, featuring multiple organic light emitting devices and wavelength converting layers that emit light in the 600 nm to 850 nm range, including infrared, to penetrate both outer and inner skin, ensuring uniform light distribution and long-lasting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wavelength converting layers are used to emit light in the 600 nm to 850 nm range, then skin treatment effectiveness is improved, but device complexity increases
Solution Approach 1:
The device divides the light emission function into multiple wavelength converting layers (first, second, and third wavelength converting layers), each converting light to different wavelength ranges. This segmentation allows targeted treatment of different skin depths while maintaining manageable complexity through modular design.
Solution Approach 2:
The organic light emitting devices serve multiple functions: they emit blue or green light directly and simultaneously serve as pump sources for multiple wavelength converting layers. This multi-functionality improves skin treatment effectiveness across different ethnic groups and skin thicknesses without proportionally increasing device complexity.
2Reliability
If light sources are designed for long-term durability, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses organic light emitting devices instead of traditional inorganic LEDs, changing the material parameter to achieve flexible, long-lasting light emission. The organic materials allow for improved durability and flexibility while the manufacturing process achieves required precision through controlled deposition of organic layers and wavelength converting particles.
3Productivity
If light emission area is increased to improve treatment coverage, then productivity is improved, but luminance uniformity decreases
Solution Approach 1:
The device implements local quality by having different wavelength converting layers distributed across the light emission area, with each layer optimized for specific wavelength ranges. This allows large-area coverage while maintaining luminance uniformity through localized wavelength conversion rather than relying on a single uniform light source.
Solution Approach 2:
The wavelength converting layers act as intermediaries between the organic light emitting devices and the skin. These intermediary layers convert the emitted blue/green light into multiple wavelength ranges (600-850 nm), ensuring uniform light distribution across the entire emission area while providing comprehensive skin treatment coverage.
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 provides effective inflammation treatment and skin regeneration effects regardless of ethnic group or skin thickness, with a long-lasting light source and improved luminance uniformity, addressing the limitations of existing devices.
Implementation Method 1
A plurality of organic light emitting devices disposed in the light emission area each for emitting the same color light
Implementation Method 2
first to third wavelength converting layers overlapping with the light emission area and a part of the non-light emission area; wherein light emitted from the plurality of organic light emitting devices is extracted to the outside of the electronic device through the first to third wavelength converting layers
Data Source
AI summary
An electronic device for skin management or skin treatments including an active area including a light emission area and a non-light emission area comprises a plurality of organic light emitting devices disposed in the light emission area and emitting same color light; and first to third wavelength converting layers overlapping the light emission area and a part of the non-light emission area, wherein light emitted from the plurality of organic light emitting devices is extracted to outside the electronic device through the first to third wavelength converting layers.