Display Panel Optical Layering for Darker Low-Power Color Output
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Solution Overview
Problem
Current display panels suffer from poor color shielding of substrates, leading to inadequate darkness and high power consumption due to reflective color issues and inefficient light management.
Innovation Solution
A display panel design featuring a substrate with varying reflectivity and a light adjusting layer with different transmittance at different wavelengths, where the light adjusting layer is positioned on the same side as the light emitting diodes, using materials like black glue and colored particles to inversely correlate transmittance and reflectivity, thereby reducing power consumption and enhancing visual blackness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional substrate is used in display panel, then the substrate color is reflected under external light, but the shielding effect on substrate color is poor and the display panel does not appear sufficiently dark
Solution Approach 1:
The patent applies local quality by making the substrate have different reflectivity at different wavelengths. The substrate is designed to have high reflectivity at wavelengths where the light adjusting layer has high transmittance, and low reflectivity at wavelengths where the light adjusting layer has low transmittance. This wavelength-dependent local optimization resolves the contradiction by ensuring the substrate reflects light only where needed while maintaining overall darkness.
Solution Approach 2:
The patent changes the optical parameters of both the substrate and light adjusting layer across different wavelengths. The substrate reflectivity and light adjusting layer transmittance are specifically engineered to have inverse correlations at different wavelengths, transforming the static substrate into a dynamically optimized optical system that achieves both good color shielding and sufficient darkness.
2Object-affected harmful factors
If conventional light management is used in display panel, then the substrate color affects overall display color, but the power consumption is high
Solution Approach 1:
The patent converts the harmful substrate color reflection into a beneficial effect by designing the substrate to have high reflectivity at specific wavelengths where the light adjusting layer allows light transmission. The substrate's natural reflective property, which was previously harmful, is now utilized to enhance display brightness in specific color channels, thereby reducing the need for additional light sources and lowering power consumption.
Solution Approach 2:
The patent employs composite material design by combining the substrate with wavelength-specific reflective properties and the light adjusting layer with complementary transmittance characteristics. This composite optical system achieves superior light management by coordinating the optical properties of multiple materials across different wavelengths, eliminating substrate color interference while maintaining energy efficiency.
3Illumination intensity
If the light adjusting layer has high transmittance at all wavelengths, then more light passes through, but the substrate color reflection becomes more visible
Solution Approach 1:
The light adjusting layer is designed with local quality in the optical domain by having different transmittance at different wavelengths rather than uniform transmittance. This wavelength-selective transmittance allows the layer to permit high light transmission at certain wavelengths while blocking wavelengths where substrate color reflection would be problematic, thereby resolving the contradiction between light transmission and color shielding.
Solution Approach 2:
The patent applies parameter changes by varying the transmittance parameter of the light adjusting layer across the electromagnetic spectrum. Instead of a single transmittance value, the layer exhibits a spectrum of transmittance values that are inversely correlated with substrate reflectivity at corresponding wavelengths, dynamically optimizing both light transmission and color shielding performance.
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 solution effectively reduces power consumption while maintaining brightness, ensuring the display panel appears dark and free from substrate color reflections, improving visual experience and market competitiveness.
Implementation Method 1
the transmittance of material forming the light adjusting layer at different wavelengths is different, and the transmittance change of the light adjusting layer at different wavelengths is inversely correlated with the change of the reflectivity of the substrate at the corresponding wavelength
Implementation Method 2
the reflectivity of the substrate under blue light and the reflectivity of the substrate under green light are both less than the reflectivity of the substrate under red light
Data Source
AI summary
The present disclosure discloses a display panel which includes a substrate with varied reflectivity dependent upon different wavelengths; a plurality of light emitting diodes located on the substrate; and a light adjusting layer located on the substrate, wherein the light adjusting layer and the plurality of light emitting diodes are located on the same side of the substrate, the transmittance of material forming the light adjusting layer is varied dependent upon different wavelengths, and the transmittance change of the light adjusting layer at different wavelengths is inversely correlated with the change of the reflectivity of the substrate at the corresponding wavelengths.