Liquid Crystal Display Panel Sub-Pixel Alignment for Dark Line Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display panels often suffer from undesirable phenomena such as dark lines during display, leading to poor display effects due to misalignment of liquid crystal molecules.
Innovation Solution
The liquid crystal display panel is designed with a configuration of 4N sub-pixel sub-regions arranged in a single column, where each sub-region includes a strip electrode and a planar electrode, and the alignment films are optically aligned to control the tilting directions of liquid crystal molecules, ensuring proper alignment and minimizing dark line formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrode and alignment film configuration is used, then manufacturing process is simple, but dark lines appear and display effect deteriorates due to liquid crystal molecule misalignment
Solution Approach 1:
The sub-pixel region is divided into multiple sub-regions (first sub-region, second sub-region, third sub-region, fourth sub-region) with different electrode configurations. Each sub-region has specific strip electrodes and planar electrodes arranged in particular patterns, allowing precise control of liquid crystal molecules in different areas to eliminate dark lines while maintaining overall display quality.
Solution Approach 2:
Different regions within the sub-pixel are assigned different electrode types and alignment film orientations tailored to local requirements. The first alignment film in the first sub-region has a first optical alignment direction, while the second alignment film in the second sub-region has a second optical alignment direction, creating locally optimized liquid crystal alignment to prevent dark line formation.
2Manufacturing precision
If alignment films are optically aligned to control liquid crystal tilting directions, then luminance uniformity improves, but manufacturing precision requirements increase
Solution Approach 1:
The alignment films are pre-configured with specific optical alignment directions during the manufacturing process. The first alignment film is prepared with a first optical alignment direction and the second alignment film with a second optical alignment direction before liquid crystal injection, ensuring that liquid crystal molecules achieve the desired tilting directions without requiring complex post-adjustment procedures.
3Reliability
If strip electrodes with multiple electrode strips are used, then liquid crystal alignment control improves, but electrode structure complexity increases
Solution Approach 1:
The strip electrodes are divided into multiple electrode strips within each sub-region. The first sub-region contains first strip electrodes with first extension directions, while the third sub-region contains third strip electrodes with third extension directions. This segmentation enables precise local control of liquid crystal alignment while maintaining a systematic electrode structure that can be manufactured using standard processes.
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 transmission efficiency of the liquid crystal display panel, improves the uniformity of luminance, and results in a better display effect by reducing dark lines and enhancing viewing angles.
Implementation Method 1
the alignment films are optically aligned to control the tilting directions of liquid crystal molecules
Implementation Method 2
control the tilting directions of liquid crystal molecules, ensuring proper alignment and minimizing dark line formation
Data Source
AI summary
Provided is a liquid crystal display panel. The liquid crystal display panel includes: a first substrate and a second substrate that are opposite to each other, and a liquid crystal layer between the first substrate and the second substrate. The liquid crystal display panel includes a plurality of sub-pixel regions. Each of the plurality of sub-pixel regions includes 4N sub-pixel sub-regions arranged in a single column, and the 4N sub-pixel sub-regions are organized into one group, or a plurality of groups that are adjacent to each other. A same group of sub-pixel sub-regions includes two first sub-regions and two second sub-regions. N is an integer greater than or equal to 1.