Display Assembly Drive Voltage Scaling by Frame Gray Scale
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Solution Overview
Problem
Existing active light-emitting display assemblies consume excessive power due to the use of a fixed drive voltage that is set to meet the maximum brightness requirement, despite not all content being displayed at this level.
Innovation Solution
Adjust the drive voltage dynamically based on the highest gray scale of each frame of image, determining the required voltage and adjusting it accordingly to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a fixed drive voltage is used to meet maximum brightness requirement, then the display assembly can display at highest gray scale, but the power consumption is relatively large
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed drive voltage to a dynamically adjustable drive voltage that changes according to the actual display content. The drive voltage is adjusted frame-by-frame based on the highest gray scale value in each frame, allowing the display to adapt its power consumption to the actual brightness requirements rather than always operating at maximum capacity.
Solution Approach 2:
The patent changes the drive voltage parameter dynamically based on the content being displayed. By calculating the highest gray scale value in each frame and adjusting the drive voltage accordingly, the system modifies the electrical parameters to match the actual display needs, reducing power consumption when maximum brightness is not required while maintaining display quality.
2Reliability
If a fixed drive voltage is used, then the display assembly can ensure normal display at all gray scales, but the power consumption increases when high brightness is not needed
Solution Approach 1:
The system dynamically adjusts the drive voltage based on the actual content requirements while ensuring that the adjusted voltage remains sufficient to display the highest gray scale value in the current frame. This dynamic adaptation maintains display reliability for the actual content being shown while avoiding unnecessary power consumption.
Solution Approach 2:
Instead of always applying the full drive voltage required for maximum brightness, the patent applies only the necessary portion of drive voltage required for the actual content. By calculating the minimum voltage needed based on the highest gray scale value in each frame, the system avoids excessive voltage application and the associated power waste.
3Use of energy by moving object
If the drive voltage is reduced to lower power consumption, then power efficiency improves, but the display may not meet maximum brightness requirement
Solution Approach 1:
The patent applies the minimum necessary drive voltage rather than always using the maximum voltage. By calculating the drive voltage based on the highest gray scale value in each frame, the system applies only the partial voltage needed for the actual content, avoiding both power waste and insufficient brightness.
Solution Approach 2:
The drive voltage parameter is changed dynamically to match the content requirements. The system calculates and adjusts the drive voltage frame-by-frame based on the actual gray scale values present, ensuring that the brightness parameter is sufficient for the content being displayed while minimizing power consumption.
Data Source
AI summary
A method for a terminal device with an active light-emitting display assembly, includes: obtaining image data of an Nth frame of image, where N is a positive integer; obtaining a highest gray scale of the Nth frame of image according to the image data, where the highest gray scale of the Nth frame of image is a maximum value of gray scales corresponding to pixels in the Nth frame of image; obtaining a drive voltage of the Nth frame of image according to the highest gray scale of the Nth frame of image, where the drive voltage of the Nth frame of image is a voltage required in a case that the display assembly displays the Nth frame of image; and sending a voltage adjustment amount of the Nth frame of image to the display assembly.