AMOLED Display Brightness Adjustment via Regional Attenuation Data
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Solution Overview
Problem
Current brightness adjustment methods for AMOLED displays rely on fixed factors, leading to uneven display characteristics and accelerated pixel attenuation, which worsens over time, affecting the display panel's lifetime.
Innovation Solution
A method that adjusts brightness by storing and retrieving attenuation data and brightness gain factors, allowing for dynamic adjustment of central and peripheral brightness gain factors based on attenuation information, reducing the difference between them to extend device lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed brightness adjustment factors are used, then brightness adjustment is simple, but pixel attenuation accelerates and display uniformity deteriorates over time
Solution Approach 1:
The patent implements dynamic brightness adjustment by dividing the display panel into multiple regions (center and peripheral areas) and applying different brightness gain factors to each region. The brightness gain factors are dynamically adjusted based on detected attenuation characteristics of pixels in different regions, rather than using a fixed uniform factor across the entire panel. This dynamic regional adjustment maintains display uniformity while extending panel lifetime.
Solution Approach 2:
The patent applies different brightness adjustment strategies to different regions of the display panel. The center region and peripheral regions have separate brightness gain factors that are independently adjusted according to their respective attenuation characteristics. This local quality approach allows targeted compensation for regional attenuation differences, improving overall display uniformity.
2Illumination intensity
If brightness is increased to compensate for attenuation, then display brightness is maintained, but power consumption increases and device lifetime decreases
Solution Approach 1:
The patent applies different brightness gain factors to different regions (center vs. peripheral areas) based on their specific attenuation characteristics. This localized adjustment ensures that brightness is maintained only where needed, rather than uniformly increasing brightness across the entire panel, thereby reducing unnecessary power consumption and extending device lifetime.
Solution Approach 2:
The patent dynamically adjusts the brightness gain factors based on detected attenuation characteristics of pixels. By monitoring pixel attenuation and adapting the brightness parameters accordingly, the system maintains optimal display brightness while minimizing the brightness increase needed, thus reducing power consumption and extending device lifetime.
3Device complexity
If uniform brightness adjustment is applied across the entire panel, then adjustment process is simple, but regional display unevenness worsens due to different attenuation characteristics
Solution Approach 1:
The patent divides the display panel into multiple regions (center region and peripheral regions) and applies different brightness gain factors to each region. This segmentation allows the system to account for different attenuation characteristics in different areas, improving display uniformity while maintaining manageable complexity through automated detection and adjustment.
Solution Approach 2:
The patent implements region-specific brightness adjustment by detecting attenuation characteristics separately for different regions and applying tailored brightness gain factors. This local quality approach ensures that each region is compensated according to its specific needs, improving overall display uniformity despite the increased complexity of regional management.
Data Source
AI summary
A method of adjusting brightness of a display panel includes a database creation step: storing attenuation data and a plurality of first brightness gain factors in a database. The attenuation data is performance attenuation data of a functional device of a display panel, and the first brightness gain factors are provided to display brightness of the display panel. A retrieving step: retrieving the attenuation data and the first brightness gain factors from the database. An adjustment step: adjusting the first brightness gain factors according to the attenuation data to obtain a plurality of second brightness gain factors.