Segmented Liquid Crystal Electrodes for Fast Response
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Solution Overview
Problem
Liquid crystal panels face increased response time and potential Caton phenomenon due to high viscosity and low temperatures, which affect display performance, especially during the transition from white to black display.
Innovation Solution
The implementation of alternately arranged first and second electrodes on both substrates, with insulation layers and a transparent common electrode having surface-shaped structures, creates vertical and horizontal electrical fields to control liquid crystal alignment, reducing falling time and maintaining fast response times even under high viscosity or low temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If liquid crystals are used with high viscosity or in low temperature environment, then the liquid crystal panel can operate under various conditions, but the falling time increases and response time increases
Solution Approach 1:
The common electrode is divided into multiple segmented electrodes (first common electrode and second common electrode) arranged in different directions. This segmentation allows different electrode segments to provide anchoring forces in different directions, preventing liquid crystal molecules from being overly influenced by anchoring forces in a single direction, thereby reducing falling time and response time while maintaining operability under various conditions including high viscosity and low temperature environments.
2Stability of the object's composition
If anchoring forces are used to align liquid crystals during transition from white to black display, then liquid crystal alignment is maintained, but falling time increases and Caton phenomenon occurs
Solution Approach 1:
The segmented common electrodes are configured to generate counterbalancing anchoring forces that offset the excessive anchoring influence during liquid crystal transition. By having electrodes arranged in different directions (first direction and second direction perpendicular to each other), the system creates a balanced force field that prevents liquid crystal molecules from being trapped by strong unidirectional anchoring forces, thus reducing falling time and eliminating Caton phenomenon while maintaining proper alignment.
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 decreases the falling time and response time, enhancing display performance by utilizing stronger electrical fields for non-anchoring forces during transitions, thus mitigating the Caton phenomenon and ensuring effective image display.
Implementation Method 1
a first electrical field is formed between the common electrode and the pixel electrode, the first electrical field controls the liquid crystals aligning along a first direction to align along a second direction
Implementation Method 2
a second electrical field is formed between the adjacent first electrode and the second electrode, the second electrical field controls the liquid crystals aligning along the second direction to align along the first direction
Data Source
AI summary
A liquid crystal display (LCD) and the liquid crystal panel thereof are disclosed. A first electrode and a second electrode are configured on the array substrate and the CF substrate. When the common electrode and the pixel electrode are applied with the voltage, and the first electrode and the second electrode are not applied with the voltage, the liquid crystals aligning along a first direction are controlled to align along a second direction. When the first electrode and the second electrode are applied with the voltage having inversed polarity, and the common electrode and the pixel electrode are not applied with the voltage, the liquid crystals aligning along the second direction are controlled to align along the first direction. In this way, the falling time and the response time may be decreased.