Array Substrate Layout to Reduce Vertical Lines in LCD Panels
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Solution Overview
Problem
The Dual Gate technology used in liquid crystal display panels for full-screen devices can lead to a Vertical line phenomenon due to unbalanced voltage polarities in sub-pixels, resulting in poor display quality.
Innovation Solution
The array substrate design includes alternating extending parts of data lines and gate lines forming bending structures, ensuring opposite polarities between adjacent data lines and averaging voltage polarities across columns, while incorporating touch signal lines for touch control without a separate touch panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If Dual Gate technology is used to reduce data lines and increase screen-to-body ratio, then the screen-to-body ratio is improved, but vertical line phenomenon occurs due to unbalanced voltage polarities
Solution Approach 1:
The patent applies asymmetry by intentionally designing different connection configurations for first and second sub-pixels. Specifically, first sub-pixels are connected to first data lines while second sub-pixels are connected to second data lines, creating an asymmetric voltage polarity distribution pattern that averages out the vertical line effect across the display screen.
Solution Approach 2:
The patent implements local quality by applying different voltage polarity treatments to different regions of the display. Different data line groups (first data lines vs. second data lines) are assigned different polarity characteristics, allowing local optimization of voltage balance in different areas of the screen to eliminate vertical lines while maintaining high screen-to-body ratio.
2Reliability
If multiple data lines are used to avoid vertical lines, then display quality is improved, but the number of data lines increases reducing screen-to-body ratio
Solution Approach 1:
The patent applies universality by making data lines serve multiple functions. The data lines not only transmit voltage signals to control sub-pixel states but also function as polarity balancing elements. By designing data lines with specific connection patterns to different sub-pixel types, they simultaneously achieve signal transmission and vertical line elimination without requiring additional dedicated lines.
Solution Approach 2:
The patent uses inversion by reversing the conventional approach. Instead of using more data lines to solve the vertical line problem, it inverts the strategy by using fewer data lines with differentiated connection configurations. The solution inverts the traditional assumption that more lines are needed, proving that strategically configured fewer lines can achieve both high screen-to-body ratio and display quality.
3Adaptability or versatility
If touch panel is integrated separately, then touch functionality is achieved, but device thickness increases
Solution Approach 1:
The patent applies merging by combining the touch panel structure with the array substrate structure. The data lines and gate lines on the array substrate are configured to also serve as touch signal transmission lines. This integration merges two previously separate functions (display control and touch sensing) into a single unified structure, eliminating the need for a separate touch panel layer and thereby reducing overall device thickness.
Solution Approach 2:
The patent implements universality by designing the array substrate components to perform dual functions. The data lines and gate lines serve both as display control signals and as touch signal transmission pathways. This multi-functionality allows the device to achieve touch functionality without adding separate dedicated touch panel structures, thus avoiding increased device thickness.
Data Source
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AI summary
Provided is an array substrate (100) and a display device, and belongs to the field of display technologies. The array substrate (100) includes: a base substrate (10), and a plurality of gate lines (20), a plurality of data lines (30), a plurality of sub-pixels (40) and a plurality of touch signal lines (50) disposed on the base substrate (10). The data lines (30) have a plurality of first extending parts (301) and a plurality of second extending parts (302) which are in an alternating arrangement. When the array substrate (100) is used to prepare a liquid crystal display panel and the liquid crystal display panel is displaying, in each column of the sub-pixels (40), the voltage polarities of the two sub-pixels (40) which respectively belong to two adjacent first pixel regions are opposite. The voltage polarities of the same type of sub-pixels (40) in the same frame of image can be effectively averaged on a space dimension, thereby reducing the probability of the occurrence of the Vertical lines, and effectively improving the display effect of the liquid crystal display panel.