Liquid Crystal Dye Display Light Management
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Solution Overview
Problem
Existing reflective display devices face challenges in energy efficiency and environmental impact, with limitations in reducing energy loss and improving display quality.
Innovation Solution
The electronic device incorporates a display layer with liquid crystal and dye materials, reflective layers, and color filter layers, which switch between scattering and transmissive states to manage light effectively, reducing energy consumption and enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If reflective display devices are used to reduce energy loss, then energy efficiency is improved, but display quality and environmental impact remain problematic
Solution Approach 1:
The liquid crystal material transitions between different states (scattering and transmissive) based on applied voltage, enabling dynamic control of light propagation. This dynamic behavior allows the display to adapt its optical properties for different display states while maintaining reflective operation for energy efficiency
Solution Approach 2:
The patent changes the optical parameters of the liquid crystal material through voltage control, transitioning between scattering and transmissive states. This parameter change enables the display to achieve both energy efficiency (reflective state) and display quality (transmissive state with color filters) at different times
2Illumination intensity
If the display layer is always in transmissive state for good display quality, then display quality is improved, but energy consumption increases
Solution Approach 1:
The display layer periodically switches between scattering and transmissive states based on display requirements. During non-display states, it returns to scattering state to reflect ambient light and conserve energy, while during display states it transitions to transmissive state for optimal image quality
Solution Approach 2:
The liquid crystal material dynamically changes its optical state in response to voltage signals, allowing the display to adapt between energy-saving reflective mode and high-quality transmissive mode based on operational requirements
3Reliability
If light is scattered by liquid crystal material to achieve non-display state, then display state control is improved, but light absorption by dye material increases energy loss
Solution Approach 1:
The patent extracts the light absorption function to specific dye material regions located in pixel spacing areas, while the pixel regions use reflective layers to return light. This separation ensures that light absorption by dye material does not interfere with the reflective display mechanism in pixel regions, reducing overall energy loss
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
This configuration enables efficient light management, reducing energy loss and improving display quality by optimizing light reflection and absorption, thus addressing the shortcomings of existing reflective display devices.
Implementation Method 1
The display layer is in a scattering state under a non-display state, and at least part of light is scattered by the liquid crystal material
Implementation Method 2
absorbed by the dye material when the light passes through the display layer
Implementation Method 3
at least part of light passes through the liquid crystal material and the dye material in the plurality of pixel regions and is reflected by the plurality of reflective layers
Data Source
AI summary
An electronic device includes pixel regions and pixel spacing regions, and includes: a display layer disposed in the pixel regions and the pixel spacing regions, and including a liquid crystal material and a dye material; and reflective layers respectively disposed in the pixel regions, and at one side of the display layer. The display layer is in a scattering state under a non-display state, and light is scattered by the liquid crystal material and absorbed by the dye material when the light passes through the display layer. The display layer in the pixel regions is in a transmissive state and the display layer in the pixel spacing regions is in a scattering state under a display state, and light passes through the liquid crystal material and the dye material in the pixel regions and is reflected by the reflective layers when the light passes through the display layer.