Color Filter Substrate Electrodes for Uniform Electric Field Distribution
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Solution Overview
Problem
Horizontal E-field LCD devices suffer from non-uniform electric field distribution and low light transmissivity due to regions not covered by the electric field, leading to reduced overall light transmissivity.
Innovation Solution
A liquid crystal panel design featuring both an array substrate and a color filter substrate with alternating strip-shaped pixel and common electrodes, where the color filter substrate's electrodes generate an auxiliary electric field to complement the primary electric field on the array substrate, ensuring uniform electric field distribution and enhanced light transmissivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If horizontal E-field LCD devices are used to eliminate the need for optical compensation films, then device complexity is reduced, but light transmissivity decreases due to non-uniform electric field distribution
Solution Approach 1:
The invention segments the electrode structure by introducing additional pixel electrodes and common electrodes on the color filter substrate, dividing the single-layer electrode system into a multi-layer segmented structure that generates multiple electric field regions to achieve uniform coverage
Solution Approach 2:
The invention adds a vertical dimension to the electrode arrangement by placing electrodes on both the array substrate and the color filter substrate, creating a three-dimensional electrode configuration that generates uniform electric field distribution across the liquid crystal layer
2Illumination intensity
If electrodes are arranged to cover all regions, then light transmissivity improves, but device complexity increases due to additional electrode structures
Solution Approach 1:
The color filter substrate electrodes serve multiple functions: they generate the auxiliary electric field to ensure uniform coverage, maintain the horizontal E-field configuration to avoid compensation films, and integrate with the existing pixel electrode structure to reduce overall device 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
This configuration increases light transmissivity from a minimum of 70% to a maximum of 90% by uniformly rotating liquid crystal molecules and improving phase delay, thereby enhancing light transmission.
Implementation Method 1
the direction of the E-field driving the liquid crystals
Implementation Method 2
uniformly rotating liquid crystal molecules
Data Source
Figure 1~2
Figure 3
AI summary
Embodiments of the invention provide a color filter substrate, a liquid crystal panel and a liquid crystal display device. The color filter substrate comprising a substrate; a plurality of sets of electrode structure formed on a side of the substrate, each set of electrode structure comprises a pixel electrode and a common electrode for generating a horizontal electric field between the pixel electrode and the common electrode by applying a voltage.