OLED Lighting Panel Wavelength Segmentation for Lifetime Extension
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Solution Overview
Problem
Current white OLED lighting panels have limited efficiency and lifetime due to the use of blue light, which cannot be independently controlled, leading to reduced overall performance.
Innovation Solution
A system comprising at least one light emitting device with individually controllable wavelengths, a sensor to detect presence, and a controller to adjust the color output, reducing blue light emission when not needed, thereby improving efficiency and lifetime by emitting yellow light when unoccupied and white light when occupied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If blue light is used in OLED lighting panels to achieve white light emission, then the lighting panel can emit warm white color, but the lifetime and efficiency of the device is reduced
Solution Approach 1:
The OLED lighting panel is divided into multiple independently controllable wavelength regions (blue, green, red, yellow) that can be controlled separately. This segmentation allows the system to emit white light when needed while avoiding continuous blue light emission, thereby extending device lifetime while maintaining illumination functionality.
Solution Approach 2:
The lighting panel dynamically adjusts its emission spectrum based on real-time sensor input. When motion is detected, the panel emits full-spectrum white light; when no motion is detected, it switches to yellow light emission. This dynamic adaptation resolves the contradiction by making the blue light emission conditional rather than continuous.
2Illumination intensity
If blue light component is increased to improve lighting quality, then the color rendering is enhanced, but the efficiency and lifetime are reduced
Solution Approach 1:
The system changes the emission parameters (wavelength distribution) of the OLED panel based on operational conditions. By adjusting the relative intensities of different wavelength regions, the system can optimize for either lighting quality or energy efficiency depending on the situation, resolving the contradiction between these two parameters.
3Stability of the object's composition
If blue light emission is continuous to maintain lighting output, then the illumination is consistent, but the overall efficiency and lifetime are reduced
Solution Approach 1:
The lighting panel employs periodic sensing and conditional emission. The sensor continuously monitors for motion, and the panel only emits blue light when motion is detected. This periodic activation pattern maintains illumination consistency during occupied periods while significantly reducing overall energy consumption during unoccupied periods.
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 system enhances the efficiency and lifetime of OLED lighting panels by reducing blue light emission when unoccupied, resulting in lower power consumption and extended panel lifespan, while maintaining desired lighting conditions when occupied.
Implementation Method 1
OLEDs make use of thin organic films that emit light when voltage is applied across the device
Data Source
AI summary
Described herein are systems, devices, and methods related to adjusting the intensity of specific wavelengths in an illumination panel based on the presence of a person near the panel. By reducing some emitted wavelengths, such as wavelengths associated with blue light, when such wavelengths are not needed or desired, the lifetime and/or efficiency of the lighting panel can be increased. The systems, devices, and methods can be used to reduce energy costs and also to delay the aging of lighting panels.