Array Substrate Data Line Placement for Aperture Ratio
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Solution Overview
Problem
The arrangement of data lines, scan lines, thin film transistors, and mask electrodes in VA-type liquid crystal display panels restricts the improvement of the aperture ratio, deviating from the current trend of increasing display panel efficiency.
Innovation Solution
The array substrate design includes a pixel electrode with a Union-Jack-shaped structure, where the data line is disposed along the trunk region, and the scan line is placed in a way that reduces opaque regions by optimizing the placement of these components within the pixel electrode's trunk and branch regions, enhancing the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If data lines, scan lines, thin film transistors, and mask electrodes are arranged in conventional positions, then the display panel can function properly, but the aperture ratio is severely restricted and cannot be improved
Solution Approach 1:
The data line is disposed along the trunk region of the pixel electrode in a planar arrangement, utilizing the two-dimensional space more efficiently. This dimensional optimization allows the data line to share space with the pixel electrode structure rather than requiring separate dedicated regions, thereby improving the aperture ratio without compromising functionality
Solution Approach 2:
The data line is integrated with the pixel electrode structure by disposing it along the trunk region. This merging of components reduces the total area occupied by separate elements and eliminates the need for additional mask electrodes, thus improving the aperture ratio while maintaining proper display function
2Reliability
If opaque mask electrodes are disposed among data lines and pixel electrodes to reduce electrical field influence, then electrical interference is reduced, but the aperture ratio is further reduced
Solution Approach 1:
The mask electrode component is completely removed from the structure. Instead of using separate opaque mask electrodes to control electrical fields, the patent relies on the geometric arrangement of the data line along the pixel electrode trunk region and the inherent electrical properties of the liquid crystal material, thereby eliminating the aperture ratio penalty associated with mask electrodes
Solution Approach 2:
The liquid crystal layer serves as an intermediary that naturally controls electrical field distribution between the data line and pixel electrode. By utilizing the electro-optic properties of the liquid crystal material, the need for additional mask electrode structures is eliminated, improving the aperture ratio while maintaining electrical field control
Data Source
AI summary
The present invention provides an array substrate and a liquid crystal display panel. The array substrate includes a substrate, a scan line, a data line, a thin film transistor, and a pixel electrode. The pixel electrode includes a trunk region and a branch region. In the pixel electrode, the data line is disposed along the trunk region. The present invention, by disposing the opaque data line in a region in which a trunk region of the opaque pixel electrode is located, reduces opaque regions of the array substrate and enhance the aperture ratio of the array substrate, which facilitates display quality of the liquid crystal display panel.