Display Panel Off Ratio Control for Power and Afterimage
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Solution Overview
Problem
Current display devices apply a uniform off ratio and driving power voltage across all display panels, leading to inefficiencies in power consumption and increased instantaneous afterimages due to the 'worst case' scenario consideration, rather than tailoring settings to specific panel characteristics.
Innovation Solution
A display device and method that differentially apply an off ratio and initialization driving power voltage based on luminance and chromaticity of each display panel, using a controller to determine and adjust these settings, thereby optimizing power usage and reducing afterimages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a uniform off ratio is applied to all display panels based on worst case scenario, then reliability is improved, but power consumption efficiency deteriorates
Solution Approach 1:
The patent applies different off ratios to different display panels based on their individual characteristics (luminance and chromaticity). Instead of using a uniform off ratio for all panels, the system measures each panel's properties and assigns an optimized off ratio, making the parameter local to each panel rather than global.
Solution Approach 2:
The patent changes the off ratio parameter based on the measured luminance and chromaticity of each display panel. By adjusting this key parameter according to panel-specific characteristics, the system achieves both reliable display performance and optimized power consumption.
2Use of energy by moving object
If the off ratio is decreased to improve power consumption efficiency, then power consumption is reduced, but instantaneous afterimage increases
Solution Approach 1:
The patent addresses this contradiction by applying different off ratios to different panels based on their characteristics. Panels with certain luminance and chromaticity properties receive off ratios optimized to minimize afterimage, while others receive off ratios optimized for power consumption, making the solution local rather than universal.
Solution Approach 2:
The system dynamically adjusts the off ratio parameter based on measured panel characteristics. By changing this parameter according to luminance and chromaticity values, the system optimizes the balance between power consumption and afterimage reduction for each individual panel.
3Device complexity
If a uniform initialization driving power voltage is applied to all display panels, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent determines different initialization driving power voltages for different display panels based on their measured luminance and chromaticity. This makes the voltage parameter local to each panel, improving manufacturing precision while accepting increased control system complexity.
Solution Approach 2:
The system changes the initialization driving power voltage parameter based on panel characteristics. By measuring luminance and chromaticity and adjusting the voltage accordingly, the system achieves precise control over display panel performance.
Data Source
AI summary
There are provided a display device and a driving method of the display device. The display device includes a display panel including a plurality of pixels, and a controller configured to determine an off ratio corresponding to an initialization driving power voltage of the display panel, and configured to control emission of the plurality of pixels corresponding to the determined off ratio, wherein different initialization driving power voltages are determined based on luminances and chromaticities of a plurality of display panels.