Color Conversion Panel Scatterer Layers Light Efficiency
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Solution Overview
Problem
Existing liquid crystal displays suffer from light loss due to polarizers and color filters, leading to reduced efficiency in display devices.
Innovation Solution
A color conversion panel is introduced, comprising a substrate with a first and second color conversion layer, a transmission layer, scatterer layers, and light filter layers, which work together to reduce color mixing and enhance light output efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a color filter layer is used in liquid crystal display, then color display is achieved, but light loss increases and efficiency decreases
Solution Approach 1:
The patent uses color conversion layers containing phosphors (red, green, blue) that convert backlight wavelength to display color, replacing traditional color filters. This allows the backlight to pass through more efficiently while still achieving color display through phosphor conversion rather than absorption filtering.
Solution Approach 2:
The invention changes the optical parameter approach from absorption-based color filtering to conversion-based color generation. By using phosphors with specific emission characteristics and quantum dots with tunable emission wavelengths, the system optimizes light transmission while maintaining color purity.
2Manufacturing precision
If multiple color conversion layers are stacked, then color purity improves, but color mixing between layers increases
Solution Approach 1:
The patent extracts and removes the harmful effect of color mixing by introducing light blocking layers between color conversion layers. These layers prevent light from adjacent layers from reaching the viewer, effectively eliminating the color mixing problem while maintaining the benefits of multiple color conversion layers.
Solution Approach 2:
Light blocking layers serve as intermediary elements between color conversion layers. These layers mediate the interaction between adjacent color layers by blocking unwanted light transmission, allowing multiple color conversion layers to coexist without mutual interference.
3Manufacturing precision
If scatterer layers are added to prevent color mixing, then color purity improves, but device complexity increases
Solution Approach 1:
The light blocking layers serve multiple functions simultaneously: they block light to prevent color mixing, provides structural support between layers, and can be integrated with existing manufacturing processes. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The patent merges the light blocking function with the structural layer between color conversion layers. Rather than adding separate scatterer layers for light management, the design combines light blocking and structural separation into a single integrated layer, reducing overall device complexity.
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 color conversion panel effectively reduces color mixing and increases light output efficiency in display devices by utilizing scatterer and light filter layers to manage light distribution and prevent unwanted light transmission between color conversion layers.
Implementation Method 1
A first scatterer layer is provided between the first color conversion layer and the second color conversion layer
Implementation Method 2
A light filter layer is provided between the first scatterer layer and the first color conversion layer
Data Source
AI summary
A color conversion panel includes a substrate. A first color conversion layer, a second color conversion layer, and a transmission layer are provided on the substrate. A first scatterer layer is provided between the first color conversion layer and the second color conversion layer. A second scatterer layer is provided between the second color conversion layer and the transmission layer. A light filter layer is provided between the first scatterer layer and the first color conversion layer, between the first scatterer layer and the second color conversion layer, between the second scatterer layer and the second color conversion layer, and between the second scatterer layer and the transmission layer.