Reflective LCD Anisotropic Scattering Member View Angle Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reflective liquid crystal display devices face limitations in improving display contrast due to view angle characteristics, which often require additional layers and increased thickness, leading to higher manufacturing costs and complexity.
Innovation Solution
Incorporating an anisotropic scattering member with distinct refractive index regions on the second substrate, where light enters from one surface and exits as scattered light from the other, providing a phase difference that compensates for view angle effects without the need for additional optical components, thereby simplifying the device structure and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a view angle compensation film is added to improve display contrast, then the view angle effect is compensated, but the number of layers increases and the device thickness increases
Solution Approach 1:
The patent combines the view angle compensation function with the liquid crystal layer itself by controlling the orientation and optical properties of the liquid crystal molecules. The liquid crystal layer is designed to inherently compensate for view angle effects through its molecular alignment and refractive index characteristics, eliminating the need for a separate compensation film layer.
Solution Approach 2:
The liquid crystal layer is designed to perform multiple functions simultaneously: it serves as both the display medium and the view angle compensation element. By optimizing the liquid crystal material properties and alignment, the system achieves both image display and view angle correction in a single component.
2Manufacturing precision
If a view angle compensation film is added to improve display contrast, then the view angle effect is compensated, but the manufacturing cost increases
Solution Approach 1:
The patent merges the view angle compensation function into the liquid crystal layer, eliminating the need for an additional compensation film. This reduction in component count directly lowers manufacturing costs while maintaining the display contrast improvement.
Solution Approach 2:
The patent extracts the view angle compensation function from a separate film component and integrates it into the liquid crystal layer itself. This eliminates the need to manufacture, source, and assemble an additional compensation film, thereby reducing overall manufacturing complexity and cost.
3Manufacturing precision
If multiple layers are added to compensate for view angle effects, then the display contrast is improved, but the device structure becomes more complex
Solution Approach 1:
The patent combines multiple functions (display and view angle compensation) into a single liquid crystal layer structure. This integration reduces the total number of layers from multiple separate components to a unified multi-functional layer, simplifying the overall device structure.
4Device complexity
If the liquid crystal layer is designed to inherently compensate for view angle effects, then the number of layers is reduced, but the liquid crystal material and alignment requirements become more stringent
Solution Approach 1:
The patent utilizes changes in the optical parameters of the liquid crystal material, specifically the refractive index anisotropy and molecular orientation angles, to achieve view angle compensation. By carefully controlling these physical parameters during manufacturing, the liquid crystal layer can provide compensation functionality without requiring additional layers.
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 approach enhances display contrast and flexibility in optical design, allowing for a thinner, more cost-effective reflective liquid crystal display device that maintains high reflection performance even in bright environments.
Implementation Method 1
The anisotropic scattering member has first and second surfaces each including a first refractive index region and a second refractive index region... light enters from the first surface and the light exits as scattered light from the second surface
Implementation Method 2
The anisotropic scattering member has first and second surfaces each including a first refractive index region and a second refractive index region, the first refractive index region having a refractive index different from that of the second refractive index region
Implementation Method 3
a liquid crystal layer disposed between the first substrate and the second substrate
Implementation Method 4
a first substrate provided with a reflective electrode
Data Source
AI summary
A reflective liquid crystal display device includes a first substrate provided with a reflective electrode, a second substrate provided with a transparent electrode, a liquid crystal layer disposed between the first substrate and the second substrate, and an anisotropic scattering member formed on the second substrate. The anisotropic scattering member has first and second surfaces each including a first refractive index region and a second refractive index region having a refractive index different from that of the first refractive index region. A refractive index difference between the first refractive index region and the second refractive index region in the first surface is larger than that in the second surface. The anisotropic scattering member is disposed so that light enters from the first surface thereof and the light exits as scattered light from the second surface thereof. A phase difference is given to the light entered the anisotropic scattering member.