Display Panel Driving Method for Stripe Elimination
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Solution Overview
Problem
High-resolution liquid crystal display panels experience increased data line and scan line density, leading to area occupation issues and display effects like stripes due to uneven charging of sub-pixels in multiplexed drive architectures.
Innovation Solution
A driving method that adjusts the timing of multiplexed signals for sub-pixels, ensuring that the charging time of sub-pixels in alternating columns differs, thereby eliminating the stripe effect by synchronizing the charging of sub-pixels within each column.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiplexed drive architecture is used to reduce data line fan-out wiring area, then the border width is reduced, but stripe artifacts appear due to uneven charging timing of sub-pixels
Solution Approach 1:
The patent applies periodic action by implementing alternating charging sequences for different column groups across multiple frame periods. Odd column groups are charged first in odd frame periods, while even column groups are charged first in even frame periods, creating a periodic pattern that eliminates stripe artifacts while maintaining the multiplexed drive architecture's area reduction benefits
Solution Approach 2:
The patent implements dynamics by making the charging sequence flexible and adaptive rather than fixed. The charging order dynamically switches between column groups based on the frame period number, allowing the system to adjust timing characteristics to prevent stripe formation while maintaining reduced wiring area
2Speed
If sub-pixels in early columns are charged first in multiplexed drive, then charging speed is improved, but display uniformity deteriorates due to timing differences across columns
Solution Approach 1:
The patent applies local quality by giving different charging priorities to different column groups based on their position. Early columns (odd columns) receive priority charging in odd frame periods, while later columns (even columns) receive priority charging in even frame periods, ensuring that each local region gets adequate charging attention at appropriate times to maintain display uniformity
Solution Approach 2:
The patent implements inversion by reversing the charging priority pattern between alternating frame periods. Instead of always charging early columns first, the system inverts the sequence in even frame periods by charging even columns first, thereby compensating for the timing differences that would otherwise cause display non-uniformity
Data Source
AI summary
A driving method of a display panel is provided, including setting the first red, first green, first blue, second red, second green, and second blue multiplexed signals. In the 2i−1th multiplexing period, the charging time of the sub-pixels corresponding to the switching units controlled by the first red, the first green, and the first blue multiplexed signals is earlier than that controlled by the second red, the second green, and the second blue multiplexed signals. While In the 2ith multiplexing period, the charging time of the sub-pixels corresponding to the switching units controlled by the first red, the first green, and the first blue multiplexed signals is later than that controlled by the second red, the second green, and the second blue multiplexed signals. The method will eliminate the stripe feeling of the scream picture displayed on the display panel and so improve the display quality.