Liquid Crystal Substrate Slit Electric Field Enhancement
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Solution Overview
Problem
The electric field intensity at the slits in current Polymer Sustained Vertical Alignment (PSVA) mode LCD panels is insufficient, leading to poor transmittance and luminosity.
Innovation Solution
A liquid crystal substrate design with a second transparent electrode layer having slits formed in it, where the first transparent electrode layer is disposed below the slits, and a third insulation layer is placed between or covers the first and second transparent electrode layers, increasing the electric field intensity at the slits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the width of the slit is reduced to increase transmittance, then the electric field intensity at the slit position becomes insufficient, but reducing the slit width is limited by exposer capability
Solution Approach 1:
The patent transitions from a single transparent electrode layer to a multi-layer structure with first and second transparent electrode layers positioned at different depths. This dimensional change allows the slits to be formed in the second layer while the first layer remains intact below, providing electric field support without compromising transmittance through the slits.
Solution Approach 2:
The first transparent electrode layer is nested below the second transparent electrode layer, creating a hierarchical structure where the lower layer supports the electric field while the upper layer with slits provides transmittance. This nested arrangement allows both functions to coexist without interference.
2Device complexity
If a single transparent electrode layer with slits is used, then the structure is simple, but the electric field driving force is weak at the slit positions resulting in poor transmittance
Solution Approach 1:
The patent resolves the contradiction by adding a vertical dimension to the electrode structure, creating multiple layers at different z-positions. This allows the system to maintain simple lateral geometry while achieving improved electric field distribution through vertical stacking, thereby enhancing transmittance without excessive complexity.
Solution Approach 2:
The transparent electrode function is segmented into multiple layers: the second layer with slits handles light transmission, while the first layer below provides continuous electric field support. This segmentation allows each layer to specialize in one function, resolving the trade-off between simplicity and performance.
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 enhances the electric field intensity at the slits, thereby improving the luminousness of the LCD panel by increasing the transmittance.
Implementation Method 1
increasing the electric field intensity at the slits
Data Source
AI summary
The invention relates to a liquid crystal substrate and a manufacturing method for the same. The liquid crystal substrate includes a substrate, a transparent electrode layer formed on the substrate. Slits are formed in the transparent electrode layer, and the transparent electrode layer is also provided below the slits. In the liquid crystal substrate and the manufacturing method thereof, the transparent electrode layer is also provided under the slits, thereby an electric field intensity at the slits is enhanced when a voltage is applied, and further increase a transmittance of a liquid crystal display panel.