Display Panel Gray-Scale Voltage Segmentation for Mura Compensation
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Solution Overview
Problem
Display panels, particularly OLED and LED panels, suffer from non-uniformity and stability issues due to inconsistent brightness and chroma, leading to a 'mura' effect, which existing compensation methods fail to address effectively while minimizing hardware storage requirements.
Innovation Solution
A method for driving a display panel by inputting data voltage groups with varying standard deviations to different gray scale segments, optimizing optical compensation parameters to enhance uniformity without excessive hardware storage, and utilizing gaze tracking for targeted compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If optical compensation is applied to the entire display panel using uniform data voltages, then the hardware storage requirement is reduced, but the display uniformity deteriorates due to the mura effect
Solution Approach 1:
The display panel is divided into multiple gray scale segments (first gray scale segment and second gray scale segment), and each segment is driven by a separate data voltage group with different standard deviations. This segmentation allows differential compensation for different gray scale regions, improving display uniformity while maintaining reasonable hardware storage requirements.
Solution Approach 2:
Different data voltage groups with different standard deviations are applied to different gray scale segments based on their specific characteristics. The first data voltage group with larger standard deviation is applied to the first gray scale segment, while the second data voltage group with smaller standard deviation is applied to the second gray scale segment, achieving localized optimization of display uniformity.
2Manufacturing precision
If different data voltage groups with varying standard deviations are applied to different gray scale segments, then display uniformity is improved, but the device complexity increases
Solution Approach 1:
The gray scale range is segmented into multiple segments, each handled by dedicated driving circuits that generate appropriate data voltage groups. This segmentation allows complex voltage generation to be distributed across multiple simple modular circuits rather than requiring one complex centralized circuit.
Solution Approach 2:
The driving circuit dynamically selects and switches between different data voltage groups based on the current gray scale segment being displayed. This dynamic switching allows the circuit to maintain simplicity at any given moment while achieving complex overall functionality through temporal variation.
Data Source
AI summary
A display panel and driving method thereof, device, and computer-readable storage medium. The display panel includes a first region including a first sub-pixel displaying a first color, the first color includes a first gray scale segment and a second gray scale segment. The method includes: inputting a first data voltage group to a first sub-pixel corresponding to the first gray scale segment in the first region; inputting a second data voltage group to a first sub-pixel corresponding to the second gray scale segment in the first region; first data voltage group includes multiple first data voltages, input gray scales corresponding to which are same, the second data voltage group includes multiple second data voltages, input gray scales corresponding to which are same, a first data voltage standard deviation of the first data voltage group is larger than a second data voltage standard deviation of the second data voltage group.