Color Display Devices Using Polymer and Liquid Crystal Layers
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices suffer from high power consumption due to light loss caused by the use of polarizing plates and color filters, which limits their efficiency and visibility, especially in portable devices.
Innovation Solution
A color display device is designed with a polymer layer containing a first coloring material dispersed within it and a second coloring material dispersed in the liquid crystals, allowing for different color presentations by controlling the orientation of the second coloring material with an applied voltage, thereby minimizing power consumption and enhancing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If polarizing plates and color filters are used in conventional LCD, then color display function is achieved, but light loss increases and power consumption increases
Solution Approach 1:
The patent extracts and removes the polarizing plates and color filters from the conventional LCD structure, replacing them with a simplified system using only a liquid crystal layer and transparent electrodes. This extraction eliminates the major sources of light loss while maintaining the essential function of light modulation for display.
Solution Approach 2:
The patent employs composite materials in the liquid crystal layer, combining liquid crystals with specific molecular structures that provide both polarization and color filtering functions inherently. This composite approach eliminates the need for separate polarizing plates and color filters, reducing light loss and power consumption.
2Illumination intensity
If polarizing plates and color filters are used in conventional LCD, then color display function is achieved, but visibility is reduced
Solution Approach 1:
By removing the polarizing plates and color filters that cause significant light absorption and scattering, the patent directly improves the amount of light reaching the viewer, thereby enhancing visibility while reducing overall light loss in the system.
Solution Approach 2:
The patent changes the optical parameters of the liquid crystal material itself to provide color selection and polarization functions, rather than relying on separate optical components. This parameter change in the liquid crystal's molecular structure and optical properties reduces light loss and improves visibility simultaneously.
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 achieves reduced power consumption and improved visibility by effectively utilizing the color materials to manage light scattering and absorption, optimizing the display performance without the need for intense backlighting.
Implementation Method 1
liquid crystals provided in the polymer layer
Implementation Method 2
controlling the orientation of the second coloring material with an applied voltage
Implementation Method 3
a first coloring material dispersed in the polymer layer
Implementation Method 4
effectively utilizing the color materials to manage light scattering and absorption
Implementation Method 5
a second coloring material dispersed in the liquid crystals
Implementation Method 6
The first coloring material and the second coloring material may present different colors
Data Source
AI summary
A color display device includes a plurality of pixels. Each of the pixels includes a first transparent electrode and a second transparent electrode, opposing to each other, a polymer layer between the first transparent electrode and the second transparent electrode, a first coloring material dispersed in the polymer layer, liquid crystals provided in the polymer layer, and a second coloring material dispersed in the liquid crystals. The first coloring material and the second coloring material presents different colors, and each of the first coloring material and the second coloring material includes at least one of a red coloring material, a green coloring material, a blue coloring material, a yellow coloring material, a cyan coloring material, and a magenta coloring material.