Color-Specific Display Panel Voltage Control for Lower Power
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Solution Overview
Problem
Existing display panels have high power consumption due to the sharing of common supply voltages across subpixels emitting different colors, which is inefficient and increases power consumption.
Innovation Solution
Calculating a typical grayscale value for subpixels emitting each color and determining a common supply voltage independently and dynamically based on this value, allowing for differentiated voltage adjustments among subpixels of different colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If common supply voltages are shared across subpixels emitting different colors, then device complexity is reduced, but power consumption increases
Solution Approach 1:
The patent segments the common supply voltage into color-specific supply voltages (ELVDD_R, ELVDD_G, ELVDD_B) for red, green, and blue subpixels respectively. This segmentation allows each color channel to have its own optimized voltage level, enabling independent power management and reducing overall power consumption while maintaining display performance.
Solution Approach 2:
The patent applies different supply voltage levels to different color subpixels based on their specific grayscale requirements. By calculating typical grayscale values for each color and determining appropriate supply voltages locally, the system optimizes power consumption for each color channel according to its actual needs rather than using a uniform high voltage for all colors.
2Illumination intensity
If supply voltages are increased to ensure adequate brightness, then illumination intensity is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic supply voltage adjustment by calculating typical grayscale values for each color channel and determining supply voltages accordingly. The supply voltages are dynamically adapted to the actual display content and grayscale requirements, ensuring adequate brightness only when necessary while reducing voltage and power consumption during low-brightness scenarios.
Solution Approach 2:
The patent changes the supply voltage parameter (ELVDD) from a fixed high value to variable values (ELVDD_R, ELVDD_G, ELVDD_B) that are adjusted based on typical grayscale calculations. This parameter optimization ensures that each color channel receives the minimum necessary voltage for its brightness requirements, preventing excessive power consumption while maintaining illumination quality.
Data Source
AI summary
A driving method and apparatus of a display panel, and a display device. The method includes the following: acquiring display data of a frame, where the display data includes grayscale values corresponding to subpixels emitting light having at least two colors; calculating a typical grayscale value corresponding to subpixels emitting light having each color according to the display data, where the typical grayscale value represents the overall grayscale level of the subpixels emitting light having each color, and determining a common supply voltage corresponding to the subpixels emitting light having each color according to the typical grayscale value.