OLED Power Level Control via Dynamic Signal Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies, particularly OLEDs, lack effective power level control mechanisms to stabilize power consumption, leading to increased energy usage and loss of video resolution when adjusting contrast.
Innovation Solution
A method and apparatus that control power level and contrast in display devices by adjusting the intensity of signals supplied to luminous elements based on reference signals, calculating necessary power parameters, and applying adjustment factors to maintain target power levels and desired contrast without modifying video signal resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If peak white luminance is enhanced to achieve good contrast ratio, then contrast quality is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic peak luminance adjustment based on picture content analysis. The system calculates the average luminance of the picture and dynamically adapts the peak white luminance level, allowing high contrast when needed while reducing power consumption during low-activity periods. This is achieved through a feedback mechanism that continuously monitors picture characteristics and adjusts luminance parameters accordingly.
Solution Approach 2:
The patent changes the luminance parameter (peak white level) based on picture content characteristics. By analyzing the average luminance and other picture parameters, the system adjusts the peak white luminance parameter to optimize the balance between contrast quality and power consumption, rather than maintaining a fixed high luminance level.
2Use of energy by moving object
If contrast is reduced for high picture load to match human visual sensitivity, then power consumption is reduced, but contrast ratio decreases
Solution Approach 1:
The system dynamically adjusts contrast ratio based on picture load and human visual sensitivity characteristics. When picture load is high, the contrast ratio is reduced appropriately, and when picture load is low, higher contrast is maintained. This dynamic adaptation optimizes both power consumption and perceived image quality throughout the viewing experience.
Solution Approach 2:
The patent implements a feedback mechanism that monitors picture characteristics and adjusts contrast parameters accordingly. The system uses information about the picture content (average luminance, peak luminance, etc.) to feedback-control the contrast ratio, ensuring optimal power consumption while maintaining perceptually adequate contrast levels.
3Use of energy by moving object
If video signal resolution is reduced to adjust contrast, then power consumption decreases, but video quality is lost
Solution Approach 1:
The patent adjusts luminance parameters (peak white level, average luminance) rather than reducing video signal resolution. By changing the physical display parameters instead of the information content, the system achieves power savings without losing video resolution or image quality information.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach optimizes power management in OLED displays by reducing power consumption while maintaining high contrast ratios and video resolution, ensuring efficient energy use and improved display performance.
Implementation Method 1
the luminance generated by each of said luminous element is based on the intensity of the signal supplied to the luminous element
Data Source
AI summary
The present invention relates to a method and an apparatus for controlling the power level and/or the contrast in a display device having a plurality of luminous elements corresponding to the colour components of the pixels of a picture, wherein the luminance generated by each of said luminous element is based on the intensity of the signal supplied to the luminous element and the power level and/or contrast for each picture is controlled by adjusting the intensity of the signal to be supplied to each luminous element. The invention is applicable to organic light emitting displays (OLED). According to the invention, the intensity of the signal to be supplied to each luminous element is based on reference signals and the adjustment of the signal intensity is made by adjusting the level of the reference signals.