Curved Display Luminance Compensation for Edge Brightness Control
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption and improving display quality, particularly in edge areas where perceived luminance decreases due to varying viewing angles and curvatures, leading to suboptimal display performance.
Innovation Solution
A display device with compensation blocks that perform luminance compensation based on selection curvature, adjusting the size and position of these blocks to enhance perceived luminance, using a driving controller to generate data signals and data voltages, and optionally incorporating user gaze tracking for personalized adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the display panel is divided into blocks with different power voltages to reduce power consumption, then power consumption is reduced, but the size of the power management integrated circuit increases
Solution Approach 1:
The display panel is divided into multiple blocks (first block, second block, third block) with different power voltage levels. Each block receives appropriate power voltage through separate power voltage lines (first power voltage line, second power voltage line, third power voltage line), enabling localized power management that reduces overall power consumption while maintaining necessary circuit size through efficient segmentation
Solution Approach 2:
Different regions of the display panel are assigned different power voltage levels based on their specific requirements. The first block receives a first power voltage, the second block receives a second power voltage, and the third block receives a third power voltage, optimizing power consumption locally in each region rather than using a uniform power supply across the entire panel
2Illumination intensity
If the perceived luminance in edge areas is increased to improve display quality, then display quality is improved, but power consumption increases
Solution Approach 1:
Luminance compensation is applied selectively to edge areas (second edge area and fourth edge area) rather than the entire display panel. The driving controller generates compensation values specifically for these regions based on their perceived luminance characteristics, improving display quality in edge areas without unnecessarily increasing power consumption across the whole panel
Solution Approach 2:
The driving controller pre-calculates compensation values for edge areas based on their geometric positions and luminance characteristics. These compensation values are stored and applied in advance during normal operation, allowing the system to maintain improved perceived luminance in edge areas without requiring real-time power-intensive calculations
3Illumination intensity
If compensation blocks are used to improve perceived luminance in edge areas, then display quality is improved, but the complexity of the driving controller increases
Solution Approach 1:
The display panel is segmented into distinct blocks (first block, second block, third block) with specific compensation strategies for each. Compensation blocks are defined with specific sizes and positions, allowing the driving controller to apply simplified, targeted compensation algorithms to each segment rather than managing a single complex compensation system for the entire panel
Solution Approach 2:
The driving controller adjusts compensation parameters (compensation values, block sizes, positions) based on predefined criteria and geometric relationships. By changing these parameters systematically rather than implementing complex adaptive algorithms, the controller achieves improved perceived luminance while maintaining manageable complexity through parameter-based control
Data Source
AI summary
A display device includes: a display panel including compensation blocks; a driving controller configured to perform a luminance compensation on the compensation blocks to generate a data signal based on input image data; and a data driver configured to generate a data voltage based on the data signal and to provide the data voltage to the display panel, wherein the driving controller is configured to select a size and a position of the compensation blocks based on a selection curvature to perform the luminance compensation on the compensation blocks.