Display Panel Brightness Attenuation Compensation
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Solution Overview
Problem
Current brightness compensation methods for display panels, which involve increasing the driving current to maintain light-emitting brightness, lead to accelerated brightness attenuation and a reduced service life of the display panel.
Innovation Solution
A method and apparatus that divide the display area into light-emitting blocks, acquire and update light-emitting count values and offset values, and perform brightness attenuation compensation based on the differences between blocks, using a reference block to maintain uniformity and reduce the compensation amplitude, thereby extending the service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If brightness compensation is performed by increasing driving current, then light-emitting brightness is maintained, but brightness attenuation rate increases and service life decreases
Solution Approach 1:
The patent applies local quality by dividing the display area into multiple light-emitting blocks and implementing differentiated brightness compensation strategies for each block based on their individual aging characteristics. Each block receives customized compensation parameters rather than uniform compensation, allowing optimized current adjustment that maintains brightness while minimizing acceleration of brightness attenuation and extending service life.
2Stability of the object's composition
If uniform brightness compensation is applied to all light-emitting blocks, then brightness uniformity is maintained, but compensation amplitude cannot be optimized for individual blocks
Solution Approach 1:
The patent implements segmentation by dividing the display area into multiple light-emitting blocks and establishing independent brightness compensation mechanisms for each block. This segmentation enables the system to maintain overall brightness uniformity while simultaneously adapting compensation parameters to the specific aging characteristics of each block, thus achieving both uniformity and adaptability.
Solution Approach 2:
The patent applies local quality by implementing differentiated brightness compensation strategies for each light-emitting block based on their individual aging characteristics. Each block receives customized compensation parameters rather than uniform compensation, allowing optimized current adjustment that maintains brightness while minimizing acceleration of brightness attenuation and extending service life.
3Illumination intensity
If brightness compensation is performed at fixed intervals, then brightness reduction is prevented, but brightness attenuation accelerates due to repeated current increases
Solution Approach 1:
The patent applies dynamics by transitioning from fixed-interval brightness compensation to a dynamic compensation mechanism that continuously monitors the light-emitting count values and aging characteristics of each block. Compensation timing and amplitude are dynamically adjusted based on real-time block status, enabling brightness maintenance while minimizing unnecessary current increases that would accelerate attenuation and extend service life.
Solution Approach 2:
The patent implements feedback by establishing a closed-loop system that continuously monitors the light-emitting count values and brightness characteristics of each block. This feedback mechanism enables the system to adjust compensation strategies based on actual block aging status, preventing over-compensation and the associated acceleration of brightness attenuation, thus extending service life while maintaining brightness.
Data Source
AI summary
The present application discloses a method, apparatus and apparatus device for performing brightness attenuation compensation of a display panel. The method includes: acquiring a first light-emitting count value corresponding to a first light-emitting block and count offset values corresponding to the light-emitting blocks; determining a brightness difference between each of the light-emitting blocks and the first light-emitting block based on the first light-emitting count value, the count offset values corresponding to the light-emitting blocks and a first correspondence; and performing brightness attenuation compensation of each of the light-emitting blocks based on the brightness difference between each of the light-emitting blocks and the first light-emitting block.