Backlight Light Strip Spectral Control for Circadian-Friendly Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices emit light with a constant spectral ratio, which can inhibit melatonin secretion due to excessive blue light, leading to poor sleep quality and suboptimal conditions.
Innovation Solution
A light strip assembly with multiple types of light-emitting unit arrays emitting different wavelengths, controlled by separate connectors on a circuit board to adjust lighting ratios gradually, simulating rhythmic lighting parameters to support circadian rhythms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If constant spectral ratio light emission is used, then device structure is simple, but blue light excessively inhibits melatonin secretion
Solution Approach 1:
The light strip assembly is segmented into multiple independent light-emitting unit arrays, each emitting different wavelengths (blue light 470-480nm, low blue light 415-455nm, and other spectral components). Each array can be controlled independently through separate connectors on the control circuit board, allowing dynamic adjustment of spectral composition to reduce melatonin inhibition while maintaining manageable structural complexity.
Solution Approach 2:
The patent changes the spectral parameters by adjusting the lighting ratios of different light-emitting unit arrays based on time periods. The control circuit board dynamically modifies the intensity proportions of various wavelength emissions, transforming the constant spectral ratio into a variable one that adapts to circadian rhythms, thereby reducing harmful effects on melatonin secretion.
2Adaptability or versatility
If multiple types of light-emitting unit arrays with different wavelengths are used, then spectral composition can be adjusted to support circadian rhythms, but device structure becomes complex
Solution Approach 1:
The light strip assembly is segmented into multiple independent light-emitting unit arrays, each emitting different wavelengths (blue light 470-480nm, low blue light 415-455nm, and other spectral components). Each array can be controlled independently through separate connectors on the control circuit board, allowing dynamic adjustment of spectral composition to reduce melatonin inhibition while maintaining manageable structural complexity.
Solution Approach 2:
The light strip assembly serves multiple functions by integrating different wavelength emissions in a single device. It can provide full-spectrum lighting, adjust spectral ratios for different time periods, and support circadian rhythms, thereby achieving high adaptability without requiring multiple separate devices.
3Ease of operation
If separate connectors control different light-emitting unit arrays, then lighting ratios can be adjusted gradually, but control circuit complexity increases
Solution Approach 1:
The control circuit board changes the operational parameters by adjusting the lighting ratios of different light-emitting unit arrays based on time periods. It dynamically modifies the intensity proportions of various wavelength emissions, transforming the constant spectral ratio into a variable one that adapts to circadian rhythms, thereby reducing harmful effects on melatonin secretion.
Solution Approach 2:
The control circuit board automatically adjusts the lighting ratios of different light-emitting unit arrays based on pre-programmed time periods, eliminating the need for manual intervention. The system serves itself by autonomously adapting the spectral composition to support circadian rhythms throughout the day.
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 assembly simulates natural lighting conditions, reducing the inhibitory effect on melatonin secretion and enhancing user alertness and sleep quality by adjusting light emission based on time periods.
Implementation Method 1
different types of light-emitting units are configured to emit lights with different wavelengths
Data Source
AI summary
A light strip assembly, a backlight module, and a display device are provided. The light strip assembly includes: a light board, provided with at least two different types of light-emitting unit arrays, where each type of light-emitting unit array includes a plurality of light-emitting units, different types of light-emitting units are configured to emit lights with different wavelengths, and wirings of the plurality of light-emitting units of each type of light-emitting unit array are integrated into an outlet terminal; and a control circuit board, provided with at least two connectors, where different connectors are connected to the outlet terminals of the different types of light-emitting unit arrays in one-to-one correspondence to control lighting ratios of the light-emitting units of the different types of light-emitting unit arrays.