Display Panel Brightness Compensation for Aging Regions
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Solution Overview
Problem
The brightness difference between the first display region and the second display region of full-screen display panels increases over time, affecting the display effect due to differing aging rates between the regions.
Innovation Solution
A compensation method and apparatus that determine a difference coefficient between the first and second display regions based on their grayscales, using a pre-stored display compensation curve to calculate a compensation start duration, and then adjust the second display region accordingly to minimize brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the second display region has higher transmittance to accommodate optical sensors, then the optical sensor functionality is improved, but the brightness difference between the first and second display regions increases over time
Solution Approach 1:
The patent applies different compensation strategies to different display regions. The first display region uses standard compensation while the second display region (with optical sensors) uses adjusted compensation parameters. This allows each region to be optimized for its specific function while maintaining overall display consistency.
Solution Approach 2:
The patent dynamically adjusts compensation parameters including compensation start duration, compensation duration, and grayscale values based on the actual brightness difference between regions. These parameters are modified over time to counteract the increasing brightness differential caused by different aging rates of the two regions.
2Device complexity
If the brightness compensation is delayed, then the device complexity is reduced, but the display effect deteriorates due to enlarged brightness difference
Solution Approach 1:
The patent pre-calculates and stores compensation curves that represent the expected brightness difference over time. Based on these pre-established curves, the system determines the optimal compensation start duration and duration, allowing proactive rather than reactive compensation.
Solution Approach 2:
The patent implements a feedback mechanism where the actual brightness difference between the first and second display regions is measured and used to adjust the compensation parameters. This closed-loop control ensures that the compensation remains effective despite variations in aging rates and environmental conditions.
Data Source
AI summary
A compensation method and compensation apparatus for a display panel, a display device and a storage medium. The method includes: with a first display grayscale of a first display region as a reference display grayscale, acquiring a second display grayscale of a second display region after a user adjusts the second display region; determining, according to the first display grayscale and the second display grayscale, a difference coefficient between the second display region and the first display region under a current use duration of the display panel; determining, according to the difference coefficient and a pre-stored display compensation curve of the second display region, a compensation start duration of the second display region, where the display compensation curve is a change curve of a relationship between a use duration of the second display region and a difference coefficient between the second display region and the first display region.