Self-Emitting Display Power Reduction via Image Significance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Self-emitting type displays, such as OLEDs, consume high power due to constant current requirements for brightness, which is inefficient and can degrade image quality when driving voltage is uniformly reduced.
Innovation Solution
An image controller distinguishes and corrects image data based on application significance, synthesizing it into output data with adjusted brightness, and controls driving power to reduce power consumption without compromising picture quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the driving voltage is uniformly reduced for all image signals, then power consumption is reduced, but picture quality deteriorates due to brightness loss in user-unwanted parts
Solution Approach 1:
The patent applies local quality by differentiating brightness correction based on image significance. Different regions of the image receive different brightness levels according to their importance: high-significance regions maintain original brightness while low-significance regions reduce brightness. This allows power consumption to be reduced in less important areas without compromising overall picture quality.
Solution Approach 2:
The patent segments the image into multiple regions based on significance levels. The image is divided into high-significance regions (requiring full brightness) and low-significance regions (where brightness can be reduced). This segmentation enables selective power management that reduces total power consumption while preserving visual quality in critical areas.
2Illumination intensity
If the current magnitude is increased to enhance light output in self-emitting type display, then brightness is improved, but power consumption increases proportionally
Solution Approach 1:
The patent changes the brightness parameter dynamically based on image significance. Instead of maintaining constant high brightness across the entire display, the system adjusts brightness levels according to the importance of different image regions. This parameter change allows the display to achieve necessary brightness in critical areas while consuming less power in less important areas.
Solution Approach 2:
The patent applies partial action by providing full brightness only where necessary (high-significance regions) and reduced brightness in other areas. This selective approach ensures that the minimum required brightness is maintained for important visual information while avoiding excessive power consumption in regions where full brightness is not needed.
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 method effectively reduces power consumption in self-emitting type displays by adjusting brightness according to image significance and application, minimizing current usage while maintaining user readability and image quality.
Implementation Method 1
The OLED arranges electrodes on both surfaces of an organic thin film, forms excitons by exciting electrons and holes injected through the electrodes, and generates a specific-wavelength light using energy from the excitons.
Data Source
AI summary
A method for reducing power consumption in an electronic equipment using a self-emitting type display is provided. The method includes distinguishing image data to be output, correcting each distinguished image data into an image brightness, synthesizing the corrected image data into one piece of output image data, and controlling a driving power for displaying the synthesized output image data as an image.