Array Substrate Layout for Uniform 8K Sub-Pixel Charging
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Solution Overview
Problem
High-resolution display panels, such as 8K displays, face challenges with picture quality due to the high number of data lines required, leading to increased manufacturing costs and potential picture quality issues like horizontal or vertical stripes, especially in dual-gate pixel architectures where the charging time of sub-pixels is not uniform.
Innovation Solution
An array substrate design with alternately arranged data lines and scan lines, where each column of data lines couples to sub-pixels of the same color, and each scan line group includes two rows of scan lines, allowing for simultaneous charging of sub-pixels and reducing the number of data driving ICs needed, thereby improving picture quality and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of data lines is increased to achieve high-resolution display, then the display resolution is improved, but the manufacturing cost increases and picture quality deteriorates due to non-uniform sub-pixel charging
Solution Approach 1:
The pixel groups are divided into first and second types based on their column positions, with each type having specific color configurations. This segmentation allows different data lines to serve different pixel groups systematically, reducing the total number of data lines needed while maintaining high resolution display capability.
Solution Approach 2:
Each data line is designed to couple with multiple sub-pixels of the same color across different pixel groups. For example, a data line couples with green sub-pixels in both first-type and second-type pixel groups, making the data line multi-functional and reducing the overall number of data lines required.
2Measurement precision
If the number of data lines is increased to achieve high-resolution display, then the display resolution is improved, but the picture quality deteriorates due to horizontal or vertical stripes
Solution Approach 1:
By segmenting pixel groups into different types with alternating color configurations, the patent ensures that adjacent pixel groups have different sub-pixel color arrangements. This prevents uniform charging patterns that cause stripe artifacts while maintaining high resolution.
Solution Approach 2:
Different pixel groups have locally optimized color configurations - first-type pixel groups have green sub-pixels at specific positions while second-type pixel groups have red sub-pixels at corresponding positions. This local variation in quality ensures uniform charging across the entire display area, eliminating stripe artifacts.
3Device complexity
If each data line couples to all sub-pixels, then the device complexity is reduced, but the charging time becomes non-uniform causing picture quality issues
Solution Approach 1:
The coupling relationship between data lines and sub-pixels is segmented by pixel group type. Each data line couples with sub-pixels of the same color in a systematic pattern across different pixel group types, ensuring uniform charging while simplifying the overall data line configuration.
Solution Approach 2:
The patent creates equipotential charging conditions by ensuring that all sub-pixels of the same color connected to the same data line have equivalent electrical characteristics. The alternating pixel group configuration ensures uniform charge distribution across the display, eliminating potential differences that cause stripe artifacts.
Data Source
AI summary
The present disclosure relates to an array substrate and a display device. The array substrate may include: a first substrate, and a plurality of pixel groups and a plurality of columns of data lines formed on the first substrate; wherein the plurality of pixel groups are arranged in an array along a row direction and a column direction, and each pixel group includes two sub-pixels arranged in the row direction; at least one sub-pixel of one of any two adjacent pixel groups in the row direction corresponds to the same color as one sub-pixel of the other pixel group; and any two adjacent sub-pixels in the row direction correspond to different colors; and each column of data line and each column of pixel groups are alternately arranged in the row direction.