Display Panel Zone Compensation for Load-Adaptive Luminance
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Solution Overview
Problem
Display devices face issues with power consumption and image visibility when a user's focus is on areas with high load values or significant data variation in the display area, leading to decreased luminance and deteriorated image quality.
Innovation Solution
A display device with a zonal compensator that divides the display panel into unit blocks, analyzes load and data variation values, and applies luminance gain curves to correct image data, ensuring luminance distribution varies based on spatial position to maintain visibility and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the luminance of the periphery of the display area is decreased to reduce power consumption, then power consumption is reduced, but the luminance of the area on which the user's eyes may be focused is decreased, thereby deteriorating image visibility
Solution Approach 1:
The patent applies local quality by differentiating luminance control between central and peripheral regions based on their functional importance. The central region maintains higher luminance to ensure visibility of important content, while the peripheral region uses lower luminance to reduce power consumption. This spatial differentiation of luminance quality resolves the contradiction between power savings and image visibility.
Solution Approach 2:
The patent implements dynamic luminance adjustment by continuously monitoring the position of important content and user focus areas. The luminance distribution is not static but adapts in real-time based on content characteristics and user interaction patterns, allowing the system to optimize both power consumption and visibility dynamically throughout usage.
2Use of energy by stationary object
If static center-focused screen dimming is applied to save power, then power consumption is reduced, but the visibility of peripheral content that draws user attention is deteriorated
Solution Approach 1:
The patent employs feedback mechanisms by monitoring user eye tracking data, touch interactions, and content analysis to identify important peripheral regions. This feedback loop allows the system to detect when peripheral content requires attention and adjust luminance distribution accordingly, enabling adaptive power management that responds to actual usage patterns rather than relying on static assumptions.
Solution Approach 2:
The system transitions from static center-focused dimming to dynamic content-adaptive luminance control. The luminance distribution continuously adapts based on real-time analysis of content importance, user focus position, and interaction patterns, allowing the display to optimize both power consumption and visibility for diverse content types and usage scenarios.
3Illumination intensity
If uniform luminance is maintained across the entire display area, then image visibility is maintained, but power consumption increases
Solution Approach 1:
The patent applies local quality by creating spatial variations in luminance across the display surface. Instead of uniform illumination, the system selectively enhances luminance in regions containing important content while reducing luminance in less critical areas. This localized quality differentiation maintains overall visibility while significantly reducing total power consumption.
Solution Approach 2:
The display area is segmented into multiple zones with different luminance characteristics based on content importance and user focus. The patent divides the screen into regions that can be independently controlled, allowing selective application of higher luminance only where necessary for visibility, thereby reducing overall power consumption while maintaining critical visibility.
Data Source
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AI summary
A display device includes a display panel including a plurality of pixels, a display panel driver, and a zone compensating circuit which divides the display panel into a plurality of unit blocks, obtains load values of input image data for the unit blocks, and generates corrected image data by correcting the input image data based on the load values. Each of the load values corresponds to one of the unit blocks. The display panel driver generates a data signal for displaying an image on the display panel based on the corrected image data. When grayscale values included in the input image data are the same, a luminance of the image displayed on the display panel is decreased moving away from a center of a reference block having a largest load value among the unit blocks based on the corrected image data.