OLED Subpixel Brightness Balancing for Afterimage Reduction
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Solution Overview
Problem
OLED display devices with color sub-pixels experience significant brightness loss and high power consumption, leading to temperature differences and afterimages in always-on areas.
Innovation Solution
A display processing method that detects changes in threshold voltage of driving transistors to identify areas in a display state for a long time, reducing the brightness of color sub-pixels and increasing the brightness of white sub-pixels in these areas to reduce power consumption and temperature differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the brightness of color sub-pixels is increased to achieve preset brightness, then the display quality is improved, but the power consumption increases and temperature difference rises causing afterimages
Solution Approach 1:
The patent applies local quality by differentiating between always-on areas (logo region) and other display areas. For always-on areas, the color film layer is removed and white sub-pixels are used instead, creating a local structural difference that reduces power consumption in specific high-visibility regions without affecting the overall display quality
2Illumination intensity
If the brightness of color sub-pixels is increased to achieve preset brightness, then the display quality is improved, but the temperature difference increases causing afterimages
Solution Approach 1:
The patent removes the color film layer from always-on areas and uses white sub-pixels instead, creating a local structural modification that reduces heat generation in the logo region. This local quality change eliminates temperature differences between always-on and other areas, preventing afterimage effects
Data Source
AI summary
A display processing method, a device and a display equipment are provided. The display processing device is applied to a display device, and the display area of the display device includes color sub-pixels and white sub-pixels. The device includes: an acquisition module, which is configured to acquire a first value of at least one first parameter of a preset area of the display area when the display device is in a video playback state, and the first parameter corresponds to a driving transistor of a pixel driving circuit in the preset area, and the value of the first parameter is proportional to the threshold voltage of the corresponding driving transistor; after a first preset time period, the second value of each first parameter is acquired; a determination module.