OLED Booster Voltage Control via Image Content Analysis
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Solution Overview
Problem
OLED-based displays face high power consumption due to excess booster voltage, leading to heat generation and reduced lifespan, as the existing methods set a constant voltage level regardless of image brightness requirements.
Innovation Solution
A method and apparatus for adjusting the booster voltage based on estimated minimal required voltage values calculated from image content, using a power control apparatus with load and OLED current estimation circuits to determine optimal voltage levels for the OLED panel, thereby reducing power consumption and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant booster voltage level is set to ensure sufficient power for all images, then the OLED display can display all kinds of images, but excess voltage is applied causing increased power consumption and heat generation
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant voltage level to a dynamic voltage adjustment system. The voltage generator dynamically adjusts the booster voltage based on real-time image content analysis, allowing the system to adapt to different display requirements and minimize excess voltage application.
Solution Approach 2:
The patent changes the voltage parameter from a fixed value to a variable value that depends on image characteristics. By analyzing image content (brightness, contrast, color depth) and adjusting the booster voltage accordingly, the system optimizes power consumption while maintaining display quality.
2Reliability
If a constant booster voltage is used to maintain sufficient power, then the OLED panel can display all image types, but heat is generated due to excess voltage
Solution Approach 1:
The system dynamically adjusts voltage levels based on actual display needs, preventing the constant high voltage that causes heat generation. The voltage is optimized in real-time according to image content, reducing thermal output while maintaining display functionality.
Solution Approach 2:
By changing the voltage parameter from constant to variable based on image characteristics, the system reduces excess voltage application that leads to heat generation, while still providing sufficient power for all image types.
3Adaptability or versatility
If excess voltage is applied to ensure sufficient power for all images, then the OLED display can handle various image requirements, but power loss increases
Solution Approach 1:
The patent applies local quality by tailoring the voltage level to specific local requirements of different image content. Instead of applying uniform excess voltage to all images, the system analyzes image characteristics and applies the minimum necessary voltage for each specific display requirement, reducing overall power loss.
Solution Approach 2:
The system changes the voltage parameter dynamically based on image content analysis, allowing the OLED panel to operate at optimal voltage levels for different image types rather than consistently at high voltage, thereby reducing power loss while maintaining adaptability.
Data Source
AI summary
A power control method, a power control apparatus, and an OLED display are provided. The method includes the steps of: estimating a voltage value according to image content of an image, the voltage value indicative of a minimal required voltage allowing the OLED panel to display the image; and controlling a voltage generator to adjust a booster voltage provided to the OLED panel according to the estimated voltage value.