Display Panel Black Voltage Calibration by Color Area
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption by optimizing black voltage settings, particularly in display panels with varying color areas, leading to inefficient energy usage.
Innovation Solution
A method and system for setting black voltage in display panels by applying a test voltage, measuring luminance and color area, and individually determining black voltage for each pixel based on luminance and color information, using a computing device to derive and apply specific black voltages for different pixel colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a uniform black voltage is applied to all pixels, then the display panel structure is simple, but power consumption cannot be optimized for different color areas
Solution Approach 1:
The patent applies different black voltages to different pixel types (red, green, blue) based on their specific color characteristics and luminance requirements. Each pixel type receives a customized black voltage level that optimizes its energy consumption while maintaining display quality, rather than using a uniform voltage across all pixels.
Solution Approach 2:
The patent dynamically adjusts the black voltage parameter based on the pixel type and measured luminance characteristics. By changing the voltage parameter individually for each pixel type during the black voltage setting process, the system achieves optimized power consumption while maintaining consistent display performance.
2Measurement precision
If black voltage is set without considering color area, then the setting process is simple, but luminance and color accuracy are compromised
Solution Approach 1:
The patent segments the display panel into different pixel types (red, green, blue) and measures the luminance characteristics separately for each type. This segmentation allows for precise luminance measurement and black voltage calculation specific to each pixel type, ensuring accurate color reproduction without requiring complex measurements across the entire display.
Solution Approach 2:
The patent uses automated luminance measurement devices and computational algorithms to replace manual or complex measurement processes. By substituting mechanical measurement approaches with electronic sensing and digital processing, the system achieves high measurement precision while simplifying the overall measurement and calculation process.
3Measurement precision
If test voltage is applied to measure luminance, then black voltage can be calculated, but the display panel requires additional measurement equipment
Solution Approach 1:
The patent enables the display panel to perform self-measurement of its luminance characteristics by applying test voltages and using integrated sensors or connected measurement devices. This self-service approach allows the panel to characterize its own performance without requiring external complex measurement equipment, simplifying the overall system configuration while maintaining measurement precision.
Data Source
AI summary
A method and system for setting a black voltage of a display panel is provided to reduce power consumption through setting the black voltage considering a color area. The method of setting the black voltage of the display panel comprising a first pixel of a first color, a second pixel of a second color, and a third pixel of a third color comprises applying a test voltage to the display panel, measuring a luminance and color area of a test image displayed in the display panel, and individually obtaining a black voltage of each of the first to third pixels based on the luminance and the color area.