Recessed Pixel Electrodes for Wide Viewing Angle LCDs
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Solution Overview
Problem
Current liquid crystal displays face challenges in achieving high-quality displays with large screens and wide viewing angles, as existing technologies struggle to maintain image clarity and color accuracy across different perspectives.
Innovation Solution
The array substrate design includes recessed pixel electrodes with specific via hole patterns and layers, allowing for varying electric fields and improved adhesiveness, which enables a multi-domain liquid crystal display with enhanced viewing angles and display effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional pixel electrode designs are used, then manufacturing is simpler, but viewing angle and image quality deteriorate
Solution Approach 1:
The pixel electrode is divided into multiple domains by introducing recesses and via holes at specific positions. This segmentation creates multiple electric field regions within each pixel, enabling multi-domain liquid crystal alignment that achieves wide viewing angles while maintaining compatibility with conventional fabrication processes
Solution Approach 2:
The invention introduces vertical dimensionality by creating recesses and via holes in the pixel electrode structure. This multi-level configuration (with different depths and positions) creates varied electric field distributions that enable wide viewing angles without complicating the overall fabrication process
2Adaptability or versatility
If multi-domain liquid crystal display is implemented, then viewing angle improves, but manufacturing complexity increases
Solution Approach 1:
The pixel electrode structure incorporates recesses and via holes at specific local positions rather than uniformly across the entire electrode. This localized modification creates the necessary electric field variations for multi-domain display while minimizing overall structural complexity and maintaining ease of fabrication
Solution Approach 2:
The via holes are positioned within or adjacent to the recesses, creating a nested configuration where one structural feature contains or surrounds another. This nesting approach achieves complex electric field distributions without proportionally increasing manufacturing complexity
3Reliability
If via holes are added to pixel electrodes, then adhesiveness improves, but manufacturing precision requirements increase
Solution Approach 1:
The recesses are formed in the pixel electrode before the via holes are created. This preliminary action provides pre-defined alignment references that guide subsequent via hole formation, reducing the precision requirements for via hole placement while ensuring proper adhesiveness
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 design results in a liquid crystal display panel with extended viewing angles and improved image display effects, simplifying fabrication and reducing production costs while maintaining high-quality image clarity across different perspectives.
Implementation Method 1
allowing for varying electric fields and improved adhesiveness, which enables a multi-domain liquid crystal display with enhanced viewing angles and display effects
Data Source
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AI summary
Disclosed are an array substrate, a liquid crystal display panel and a display device, comprising: a base substrate; a plurality of pixel units located on the base substrate; and at least one recessed structure located in the pixel units, and a pixel electrode located in the pixel unit and covering the recessed structure, wherein an orthographic projection of an opening end of the same recessed structure on the base substrate covers an orthographic projection of a bottom end of same on the base substrate, and the area of the orthographic projection of the opening end of the recessed structure on the base substrate is greater than the area of the orthographic projection of the bottom end of same on the base substrate. The pixel electrode covers the recessed structure, thus the pixel electrode forms a recessed region, thereby when the array substrate is applied to the liquid crystal display panel, an electric field surrounding the recessed region of the pixel electrode may change in a circumferential direction, thereby enlarging a visual angle and improving the effect of a display image.