Zonal Display Compensation for Focused-Area Luminance
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Solution Overview
Problem
Existing display devices face challenges in maintaining the luminance of focused areas while reducing power consumption, particularly in logo or banner areas, as they often result in reduced visibility due to uniform luminance adjustments.
Innovation Solution
A display device with a zonal compensator that calculates load values for different areas, applies gain curves based on location and load value differences, and adjusts luminance differentially to maintain high luminance in focused areas while reducing power consumption through zonal attenuation compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If uniform luminance adjustment is applied to reduce power consumption in logo areas, then power consumption is reduced, but visibility of focused areas deteriorates
Solution Approach 1:
The patent applies different luminance adjustment strategies to different regions of the display. The logo area undergoes attenuation compensation with a first attenuation rate, while the focused area uses a second attenuation rate that is lower than the first, preserving its visibility. This regional differentiation resolves the contradiction by allowing power savings in non-focused areas while maintaining luminance in focused areas.
Solution Approach 2:
The display area is segmented into distinct regions: logo area, focused area, and other areas. Each region is independently processed with specific attenuation rates based on its functional importance. This segmentation enables selective power management without compromising the visibility of critical display regions.
2Loss of energy
If zonal attenuation compensation is applied to reduce power consumption, then power efficiency is improved, but visibility of focused areas may be reduced
Solution Approach 1:
Different attenuation rates are applied to different zones based on their functional requirements. The focused area uses a lower attenuation rate (second attenuation rate) compared to the logo area (first attenuation rate), ensuring that power efficiency improvements do not compromise the visibility of important display regions.
Solution Approach 2:
The system calculates load values for different areas and uses this information to dynamically adjust attenuation rates. The controller determines the appropriate attenuation rate for each region based on its load value and functional importance, creating a feedback mechanism that prevents visibility degradation while achieving power efficiency gains.
Data Source
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AI summary
Provided herein is a display device. The display device includes a display panel including a plurality of unit blocks disposed in a display area, the plurality of unit blocks including a first area displaying a logo or a banner, a second area having largest load value and a third area disposed between the first area and the second area, a display panel driver configured to generate data voltages based on input image data, and a zonal compensator configured to receive the input image data, to calculate load values of the input image data for the plurality of unit blocks, respectively, and to control luminance of each of the first area and the third area based on a location difference between the first area and the second area and a load value difference between the first area and the second area.