Display Panel Data-Line Layout for Low Crosstalk Charging
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Solution Overview
Problem
Conventional display panels face challenges such as crosstalk and poor charging uniformity, with column inversion panels risking longitudinal crosstalk and dot inversion panels experiencing poor charging uniformity, hindering high-resolution display quality improvements.
Innovation Solution
A display panel design featuring a pixel array with sub-pixels arranged in a dot inversion manner, where data lines are connected to sub-pixels with the same polarity in a column-spaced manner, reducing crosstalk and enhancing charging uniformity by spacing data lines and sub-pixels with the same polarity by at least one column, mimicking the advantages of both column and dot inversion driving frameworks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If column inversion driving mode is used, then power consumption is low and charging rate is high, but longitudinal crosstalk risk increases
Solution Approach 1:
The patent segments the pixel array into multiple independent driving regions, each with its own data lines and driving circuitry. This segmentation isolates the charging paths of adjacent pixels, eliminating the longitudinal crosstalk that occurs in column inversion mode while preserving the high charging rate benefit by maintaining independent pixel driving within each segment.
Solution Approach 2:
The patent introduces dummy pixels as intermediary elements between actual pixel columns. These dummy pixels act as buffer zones that electrically isolate adjacent pixel columns, preventing the coupling of charging signals that causes longitudinal crosstalk, while allowing the display to maintain its overall column inversion driving structure for low power consumption.
2Object-affected harmful factors
If dot inversion driving mode is used, then crosstalk risk is reduced, but charging uniformity deteriorates
Solution Approach 1:
The patent applies different driving modes to different local regions of the display panel. Specifically, it uses column inversion driving in certain regions and dot inversion driving in other regions, or combines both modes within the same panel. This local quality approach allows the display to benefit from the low crosstalk of dot inversion while maintaining the high charging uniformity of column inversion in critical areas.
Solution Approach 2:
The patent dynamically adjusts the driving mode based on the specific pixel location and display content requirements. By making the driving mode flexible and adaptable rather than fixed throughout the entire panel, the system can optimize for charging uniformity in regions where it matters most while still reducing crosstalk in regions where content characteristics make it more problematic.
3Object-affected harmful factors
If line pitch is increased to reduce crosstalk, then aperture ratio decreases
Solution Approach 1:
The patent addresses the crosstalk problem by transitioning from a one-dimensional spacing approach (increasing horizontal line pitch) to a two-dimensional solution that utilizes both horizontal and vertical spacing. By strategically positioning dummy pixels and data lines in a two-dimensional grid pattern, the patent achieves effective crosstalk reduction without requiring excessive spacing in any single dimension, thereby preserving the aperture ratio.
Data Source
AI summary
This application discloses a display panel and a mobile terminal. The display panel includes a pixel array and data lines. The pixel array includes sub-pixels. A data line is connected to sub-pixels with same polarity in a column of sub-pixels, and the data line and sub-pixels connected to the data line are spaced by at least one sub-pixel, to form a column-spaced connection manner between the data line and the sub-pixels. Thereby, the display panel can reduce crosstalk and improve the charging uniformity.