Display Substrate With Segmented Pixel Electrodes For Aperture Ratio
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Solution Overview
Problem
Conventional display technologies face limitations in increasing pixel density and resolution due to the need for smaller sub-pixels and more data lines, leading to increased power consumption and manufacturing challenges.
Innovation Solution
A display substrate arrangement where sub-pixels form alternating pixel groups with shared sub-pixels, allowing seven sub-pixels to display six pixels, reducing the number of sub-pixels and data lines, and using weighted average processes to calculate output values, thereby enhancing display resolution and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a liquid crystal display device is miniaturized, then the size is reduced, but the aperture ratio is reduced and display quality deteriorates
Solution Approach 1:
The pixel electrode is divided into multiple regions (first region, second region, third region) with different conductive material configurations. This segmentation allows each region to contribute differently to capacitance, enabling increased total capacitance without increasing overall pixel area, thus maintaining aperture ratio while miniaturizing the device.
Solution Approach 2:
The invention extends the capacitance enhancement from two-dimensional planar structures to three-dimensional stacked structures by forming conductive material layers at different vertical positions (first conductive material layer and second conductive material layer). This vertical dimensionality increase allows greater capacitance within the same footprint, supporting device miniaturization without aperture ratio sacrifice.
2Reliability
If the pixel electrode capacitance is increased to improve display quality, then the display quality is improved, but the aperture ratio is reduced
Solution Approach 1:
The pixel electrode is segmented into multiple functional regions with different conductive material configurations. The first region has higher capacitance density to provide necessary charge storage, while the second and third regions optimize light transmission. This segmentation allows capacitance increase without uniform area increase, preserving aperture ratio.
Solution Approach 2:
Different regions of the pixel electrode are assigned different local properties: the first region contains both first and second conductive material layers for high capacitance, while the second region contains only the first conductive material layer for light transmission optimization. This local quality differentiation enables capacitance enhancement in specific areas without compromising overall aperture ratio.
3Reliability
If conductive material is added to increase pixel electrode capacitance, then the capacitance is increased, but the aperture ratio is reduced
Solution Approach 1:
The invention adds capacitance by stacking conductive material layers in the vertical dimension rather than expanding in the horizontal plane. The second conductive material layer is formed above the first conductive material layer, creating a multi-layer capacitance structure that increases total capacitance without increasing the planar footprint, thus preserving aperture ratio.
Solution Approach 2:
The conductive material is segmented into multiple layers (first conductive material layer and second conductive material layer) positioned at different vertical levels. This segmentation allows the capacitance to be distributed across multiple layers, increasing total capacitance while maintaining a compact structure that does not compromise aperture ratio.
Data Source
Figure 1
Figure 2a~2b
Figure 3a
AI summary
A display substrate and a driving method thereof and a display device are provided. The display substrate includes two types of pixel rows arranged alternately and repeatedly. In one type of pixel row, a second sub-pixel (12), a third sub-pixel (13), a second sub-pixel (12), a first sub-pixel (11) and a third sub-pixel (13) are arranged successively and repeatedly. In the other type of pixel row, a third sub-pixel (13), a first sub-pixel (11), a second sub-pixel (12), a third sub-pixel (13) and a second sub-pixel (12) are arranged successively and repeatedly. A center line of any sub-pixel in a column direction in a pixel row does not coincide with a center line of any sub-pixel in the column direction in an adjacent pixel row.