Display Panel Driving Method for Vertical Crosstalk Compensation
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Solution Overview
Problem
Existing display panels face issues with vertical crosstalk due to unequal distances between pixels and adjacent data lines, leading to different coupling capacitances and inconsistent voltage values across pixels, which reduces display quality.
Innovation Solution
A driving method for a display panel that involves obtaining initial voltage values for sub-pixels on adjacent data lines in consecutive pictures, calculating a voltage compensation value based on these initial values, and adjusting target voltage values to display the second initial picture, thereby addressing the vertical crosstalk issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pixel positioning follows conventional manufacturing processes, then manufacturing simplicity is maintained, but vertical crosstalk occurs due to unequal distances between pixels and data lines
Solution Approach 1:
The patent changes the voltage parameter by introducing compensation voltages to offset the uneven coupling capacitances caused by imprecise pixel positioning. By adjusting voltage values dynamically, the system compensates for manufacturing tolerances without requiring higher precision fabrication processes.
2Reliability
If voltage compensation is applied to all N sub-pixels, then display quality improves, but calculation complexity and processing time increase
Solution Approach 1:
The patent applies local quality by differentiating the treatment of sub-pixels based on their positions. The first to Mth sub-pixels receive voltage compensation calculated from both adjacent data lines, while the remaining sub-pixels use different compensation strategies. This localized approach optimizes display quality where needed while reducing overall computational complexity.
Solution Approach 2:
The patent implements partial action by applying full voltage compensation only to the first M sub-pixels that are most affected by vertical crosstalk, while using simplified compensation for the remaining sub-pixels. This partial approach achieves acceptable display quality while significantly reducing calculation complexity and processing requirements.
3Ease of manufacture
If unequal distances between pixels and data lines are accepted, then manufacturing process remains simple, but coupling capacitances become inconsistent causing voltage variations
Solution Approach 1:
The patent implements feedback by calculating compensation voltages based on the actual voltage values and coupling capacitances of adjacent data lines. The system continuously adjusts the voltage applied to each sub-pixel based on feedback from neighboring line voltages, ensuring voltage consistency despite manufacturing variations in pixel positioning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively reduces vertical crosstalk by compensating for voltage differences between sub-pixels on adjacent data lines, resulting in improved display quality and reduced brightness or color shifts.
Implementation Method 1
a pixel electrode and a common electrode configured to form a capacitor with the pixel electrode
Implementation Method 2
a liquid crystal layer disposed between the color conversion layer and the common electrode
Data Source
AI summary
A driving method of a display panel includes: obtaining first initial voltage values respectively corresponding to N sub-pixels on a first data line and second initial voltage values respectively corresponding to the N sub-pixels on a second data line in a first initial picture, and third initial voltage values respectively corresponding to 1st to Mth sub-pixels of the N sub-pixels on the first data line and fourth initial voltage values respectively corresponding to the 1st to Mth sub-pixels on the second data line in a second initial picture following the first initial picture; calculating a voltage compensation value for the Mth sub-pixel based on the corresponding first, second, third, and fourth initial voltage value; calculating a target voltage value for the Mth sub-pixel based on the voltage compensation value; and displaying the second initial picture based on the target voltage value.