Array Subpixel Layout for Light Leakage and Aperture Ratio
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Solution Overview
Problem
Liquid crystal display panels face issues with light leakage, which can be mitigated by larger black matrices, but this reduces the aperture ratio, and existing OLED display technologies struggle to maintain constant driving current for uniform illumination.
Innovation Solution
The array substrate design features subpixels with varying orientations and light emissive region widths, arranged in a specific pattern to maintain consistent pixel-per-inch density and improve aperture ratio, while integrated circuits and signal lines are connected to optimize display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a black matrix with larger area is used to prevent light leakage, then light leakage is reduced, but the aperture ratio is reduced
Solution Approach 1:
The patent applies different black matrix widths to different regions of the display panel. Specifically, the black matrix width is increased in edge regions compared to central regions, creating a non-uniform distribution that provides enhanced light leakage prevention at the edges where it is most needed, while preserving aperture ratio in the central viewing area.
2Area of stationary object
If subpixels are arranged with varying orientations and widths, then aperture ratio is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs asymmetric subpixel arrangements where subpixels in different regions have different orientations and width characteristics. Subpixels in edge regions are oriented and sized differently from those in central regions, allowing optimization of aperture ratio for each region's specific requirements while managing manufacturing complexity through systematic design patterns.
Data Source
AI summary
An array substrate is provided. The array substrate, in at least a region, includes a plurality of subpixels. A light emissive region of a respective subpixel of the plurality of subpixels has a first end and a second end, the second end being on a side of the first end away from a same reference region with respect to the plurality of subpixels in the region. Directions respectively from second ends to first ends of the plurality of subpixels substantially point toward the same reference region. In the region, pixel-per-inch (PPI) is substantially the same in accordance with a distance away from the same reference region. In the region, the plurality of subpixels include first subpixels of a first orientation and second subpixels of a second orientation. The first orientation and the second orientation are substantially opposite to each other.