Opposite-Aligned Liquid Crystal Electrode Openings for Response Speed
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Solution Overview
Problem
Liquid crystal display devices in the FFS mode suffer from slow response speed, which limits their performance in terms of viewing angle and aperture ratio.
Innovation Solution
A display device design featuring an electrode layer with a first and second electrode, where the second electrode has openings extending in the same direction, allowing liquid crystal molecules on both sides of the openings to be rotated in opposite directions for faster alignment, thereby improving response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If liquid crystal display devices use FFS mode to achieve wide viewing angle and high aperture ratio, then viewing angle and aperture ratio are improved, but response speed deteriorates (becomes slow)
Solution Approach 1:
The patent segments the liquid crystal layer into multiple regions with different alignment directions. Specifically, liquid crystal molecules in different regions are aligned in different directions (e.g., horizontal alignment in some regions, vertical alignment in others), allowing different parts of the display to respond at different speeds. This segmentation enables fast response in critical regions while maintaining overall display quality.
Solution Approach 2:
The patent applies different alignment characteristics to different local regions of the liquid crystal layer. By creating regions with horizontal alignment and regions with vertical alignment, the display achieves local optimization where fast response is achieved in regions that need it, while other regions maintain the benefits of FFS mode for viewing angle and aperture ratio.
2Speed
If liquid crystal molecules are aligned in opposite directions on both sides of the opening, then response speed is improved, but alignment complexity increases
Solution Approach 1:
The patent introduces asymmetric alignment configurations where liquid crystal molecules on opposite sides of electrode openings are aligned in different directions (e.g., one side horizontal, the other vertical). This asymmetric arrangement creates opposing torque effects that accelerate response time while the complexity is managed through systematic patterning rather than random 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 solution enhances response speed, maintains a wide viewing angle, and increases aperture ratio, making it suitable for practical use without significant modifications to existing liquid crystal materials or driving methods.
Implementation Method 1
an electrode layer including a first electrode and a second electrode, the second electrode being opposed to the first electrode and having a plurality of openings extending in a same extending direction
Implementation Method 2
liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, being rotated in opposite directions from each other and aligned
Data Source
AI summary
A display device includes an electrode layer and a liquid crystal layer. The electrode layer has a first electrode and a second electrode. The second electrode is opposed to the first electrode and having a plurality of openings extending in a same extending direction. The liquid crystal layer is disposed on the electrode layer. The liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.