VA Display Panel Electrode Layout for Higher Transmittance
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Solution Overview
Problem
Current high-resolution VA liquid crystal displays suffer from low transmittance rates and poor color shift issues, particularly in 8K and 16K products.
Innovation Solution
A display panel design featuring an array substrate with pixel electrodes comprising sub-pixel electrode portions and a first electrode with hollow portions that form capacitive and transverse electric fields, allowing for varying brightness levels and uniform liquid crystal torsion, reducing dark patterns and color shift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional pixel electrode structures are used in high-resolution VA LCDs, then manufacturing is simpler, but transmittance rate is low and color shift is poor
Solution Approach 1:
The pixel electrode is divided into multiple sub-pixel electrode portions (first, second, third, and fourth sub-pixel electrode portions) arranged along the first direction. This segmentation allows different regions to have different capacitance characteristics, enabling precise control of liquid crystal alignment and improvement of transmittance rate while maintaining manufacturing simplicity through modular structure
Solution Approach 2:
Different sub-pixel electrode portions are designed with different capacitance values (first sub-pixel electrode portions have first capacitance, second sub-pixel electrode portions have second capacitance). This local differentiation of electrical properties enables precise control of liquid crystal molecule orientation in different regions, improving alignment precision and reducing color shift without complicating the overall manufacturing process
2Device complexity
If conventional pixel electrode structures are used, then device structure is simpler, but color shift is poor and transmittance rate is low
Solution Approach 1:
The pixel electrode is segmented into multiple sub-pixel electrode portions with different capacitance characteristics. This segmentation enables precise control of liquid crystal alignment without requiring complex external alignment structures, maintaining device simplicity while significantly improving color shift performance and transmittance rate
Solution Approach 2:
The capacitance values of different sub-pixel electrode portions are deliberately differentiated (first capacitance vs. second capacitance). This parameter change allows precise control of electric field distribution, which directly improves liquid crystal alignment and color shift performance while keeping the overall device structure simple
3Ease of manufacture
If conventional pixel electrode structures are used, then manufacturing is easier, but transmittance rate is low
Solution Approach 1:
The pixel electrode is divided into multiple sub-pixel electrode portions that can be manufactured using standard fabrication processes. This segmentation approach improves transmittance rate through better liquid crystal alignment control while maintaining ease of manufacture by using modular, scalable structures that fit existing production workflows
Solution Approach 2:
Different regions of the pixel electrode are given different capacitance values through local structural variations. This local quality differentiation improves transmittance rate by optimizing liquid crystal alignment in each region without requiring complex manufacturing processes, as each local region can be formed using standard lithography and deposition techniques
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 design achieves high-resolution displays with improved transmittance rates and reduced color shift by creating regions of different brightness and darkness within sub-pixel electrode portions, utilizing a simple pixel structure and minimizing overlapping capacitances to enhance image quality.
Implementation Method 1
the first electrode includes a plurality of first hollow portions, an orthographic projection of the first hollow portions on the array substrate is within an orthographic projection of the sub-pixel electrode portions on the array substrate
Implementation Method 2
A display panel design featuring an array substrate with pixel electrodes comprising sub-pixel electrode portions and a first electrode with hollow portions that form capacitive and transverse electric fields
Implementation Method 3
Photo-alignment technology (UV2A) derives its name from the multiplication of ultraviolet (UV) light and the VA method of LCD panels, which can precisely manipulate the alignment of liquid crystal molecules through UV light and greatly improve the light transmittance
Implementation Method 4
the key to UV2A is the use of special polymer materials as the alignment film, which can control the tilting of liquid crystal molecules along the direction of ultraviolet light with high precision
Data Source
AI summary
A display panel and a display apparatus. The display panel comprises: an array substrate and an opposite substrate, which are arranged opposite each other; a plurality of data lines, which are located on the array substrate and extend in a first direction; a plurality of pixel electrodes, which are located on the array substrate, wherein at least one of the plurality of pixel electrodes comprises a plurality of sub-pixel electrode portions arranged in the first direction; a first electrode, which is located on the array substrate, wherein the first electrode comprises a plurality of first hollowed-out portions; and a common electrode, which is located on the opposite substrate.