Display Driving Method Adjusting Sub-Pixel Polarities to Reduce Crosstalk
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Solution Overview
Problem
The risk of crosstalk in display panels due to voltage drops on adjacent data lines not canceling each other out, particularly in high-resolution displays with 4-domain pixel electrode structures, which affects viewing angle performance.
Innovation Solution
A display driving method that adjusts the polarities of sub-pixels based on Gaussian probability calculations, setting opposite polarities in adjacent columns when the probability is above a threshold and maintaining opposite polarities otherwise, to mitigate crosstalk and improve viewing angle compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If adjacent data lines are set to have the same polarity to reduce flicker, then flicker is reduced, but the voltage drops of the coupling capacitance on the adjacent data lines cannot cancel each other out, resulting in high crosstalk risk
Solution Approach 1:
The patent applies different polarity patterns to different regions of the display panel. Specifically, it divides the display into multiple zones and assigns different polarity arrangements to each zone based on local requirements. In some regions, adjacent data lines have the same polarity to reduce flicker, while in other regions, they have opposite polarities to cancel voltage drops and reduce crosstalk. This localized differentiation resolves the contradiction by allowing both flicker reduction and crosstalk mitigation in different areas.
Solution Approach 2:
The patent dynamically adjusts the polarity assignment of data lines based on real-time or frame-by-frame analysis of image content. By detecting the presence of flicker-prone patterns or crosstalk-prone patterns in the image data, the system adaptively changes the polarity configuration. This dynamic adjustment allows the system to optimize between flicker reduction and crosstalk reduction depending on the actual display content, rather than using a fixed polarity pattern.
2Manufacturing precision
If a 4-domain pixel electrode structure is used for high resolution displays, then resolution is improved, but viewing angle performance is degraded
Solution Approach 1:
The patent introduces viewing angle compensation algorithms as an intermediary layer between the 4-domain pixel electrode structure and the final display output. These algorithms process the image data and adjust the driving signals to compensate for the viewing angle limitations inherent in the 4-domain structure. By applying compensation techniques such as color shift correction and viewing angle optimization, the system maintains high resolution while mitigating the viewing angle degradation caused by the pixel electrode structure.
Data Source
AI summary
The present application discloses a display driving method and device, and a display device, by obtaining Gaussian probability of a preset scene in a to-be-displayed image with respect to a preset color, comparing the Gaussian probability with a predetermined threshold, and setting the polarities of sub-pixels, the driving method of the present application reduces the risk of crosstalk caused by the fact that the voltage drops of the coupling capacitance on the adjacent data lines cannot be canceled each other out.