OLED Melatonin Control Pixel Wavelength Engineering
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Solution Overview
Problem
Modern lifestyles often result in reduced exposure to sunlight, leading to suppressed melatonin production and disrupted biorhythms, with chemical melatonin medications posing adverse effects, while existing lighting does not effectively mimic natural light to regulate melatonin secretion.
Innovation Solution
An OLED display device incorporating a melatonin control pixel that emits or blocks light in the 414 nm to 514 nm wavelength range, with a peak and full width at half maximum of greater than 1 nm and less than 50 nm, to suppress melatonin production during the day and enhance it at night, using a substrate with thin film transistors and organic emission layers of varying thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical melatonin medications or supplements are used to improve sleep, then melatonin production is supplemented, but adverse effects occur
Solution Approach 1:
The patent replaces chemical melatonin supplementation with an optical system (OLED display device) that uses light emission in the 460-480 nm wavelength range to stimulate endogenous melatonin production. This substitutes chemical intervention with physical (optical) intervention, eliminating the adverse effects of chemical medications while achieving the desired sleep regulation effect
2Reliability
If light of melatonin production inhibition wavelength is emitted during daytime, then melatonin production is suppressed, but existing lighting does not effectively mimic natural light
Solution Approach 1:
The patent implements local quality by creating a specific pixel (melatonin control pixel) within the OLED display that emits light in the specific wavelength range of 460-480 nm, which corresponds to the peak sensitivity of human melatonin control cells. This localized spectral characteristic allows the display to effectively mimic natural sunlight's effect on melatonin regulation, differentiating it from conventional displays that emit across broader spectra
Solution Approach 2:
The patent utilizes parameter changes by controlling the emission wavelength, intensity, and timing of light from the melatonin control pixel. By adjusting these parameters based on time of day and usage conditions, the display dynamically regulates melatonin production to match natural circadian rhythms, achieving effective biorhythm regulation
3Reliability
If OLED display emits light in melatonin production inhibition wavelength range, then melatonin secretion is controlled, but display functionality must be maintained
Solution Approach 1:
The patent applies segmentation by dividing the display into conventional color pixels (red, green, blue) and a specialized melatonin control pixel. This segmentation allows the melatonin control pixel to be optimized specifically for emitting light in the 460-480 nm wavelength range using a dedicated organic emission layer, while the other pixels maintain standard color display functions, thus managing device complexity through functional specialization
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 OLED display device effectively regulates melatonin production by emitting inhibitory light during the day and blocking it at night, promoting natural biorhythms without the adverse effects of chemical supplements.
Implementation Method 1
An OLED display device incorporates a melatonin control pixel that emits or blocks light in the 414 nm to 514 nm wavelength range
Implementation Method 2
The melatonin control pixel emits or blocks light in a melatonin production inhibition wavelength range
Data Source
AI summary
A display device includes a first pixel and a second pixel. The second pixel is controlled to emit light in a predetermined range in a first time period and to not emit light in the predetermined range in a second time period during which the first pixel emits light. The first pixel includes a first organic emission layer having a first thickness and the second pixel includes a second organic emission layer having a second thickness different from the first thickness. A resonance pattern is formed in the second pixel to emit light in a melatonin production inhibition wavelength range that corresponds to the predetermined range. The first pixel may emit blue light, green light, red light, or another color of light including white light.