Display Panel Driving Method for Large-Angle Color Shift Correction
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Solution Overview
Problem
Large-size liquid crystal display panels using vertical alignment technology experience image quality distortion due to quick saturation at large view angles as brightness increases with driving voltage, leading to reduced user experience.
Innovation Solution
A driving method that calculates the average gray-scale value of sub-regions in a display panel, adjusts pixel voltage values based on a preset conversion relationship when the gray-scale value exceeds a threshold, to correct pixel voltages and reduce color shift, thereby maintaining image quality at large view angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the driving voltage is increased to increase the brightness of large view angle, then the brightness increases, but the image quality becomes distorted due to quick saturation
Solution Approach 1:
The patent applies local quality by dividing the display panel into multiple sub-regions and applying different voltage correction strategies to each sub-region based on its specific gray-scale characteristics. This allows the system to maintain image quality in regions prone to saturation while preserving brightness enhancement in other areas, thereby resolving the contradiction between brightness and image quality distortion.
Solution Approach 2:
The patent changes the voltage parameter dynamically by calculating corrected voltage values based on gray-scale thresholds and applying different voltage corrections to different sub-regions. This parameter adjustment prevents over-saturation in high gray-scale areas while maintaining adequate brightness in other areas, thus resolving the contradiction between brightness enhancement and image quality preservation.
2Illumination intensity
If the driving voltage is increased to improve brightness, then the brightness increases, but color shift occurs leading to reduced user experience
Solution Approach 1:
The patent applies local quality by implementing region-specific voltage correction where each sub-region receives customized voltage adjustment based on its gray-scale distribution. This prevents uniform over-driving across the entire panel, thereby reducing color shift in vulnerable regions while maintaining brightness improvement in other areas.
Solution Approach 2:
The patent converts the harmful effect of voltage-induced saturation into a beneficial outcome by using the saturation threshold information to guide voltage correction. The gray-scale threshold calculation identifies regions at risk of saturation, and the corrected voltage values compensate for the potential color shift while preserving the desired brightness enhancement.
Data Source
AI summary
The present application relates to the field of display technology, and provides a driving method and a driving device of display panel, and a display device, by calculating an average gray-scale value of original pixel units in each sub-region of the display panel, then judging whether the average gray-scale value is greater than a preset gray-scale threshold. If the average gray-scale value is greater than the preset gray-scale threshold, a corrected pixel voltage value of the sub-region, according to the average gray-scale value and a preset pixel voltage conversion relationship, is determined, and the corrected pixel voltage value as a pixel voltage value of original pixel units in the sub-region is set.