Display Device Sub-Frame Color Distribution Method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face image quality deterioration when the number of sub-pixels is smaller than the number of color grayscales in an inputted image frame, as they struggle to accurately render color grayscales between adjacent pixels.
Innovation Solution
A display device and driving method that generate multiple sub-frames based on an image frame, where each sub-frame includes specific color grayscales for different pixels, allowing the pixel part to sequentially display images corresponding to these sub-frames, ensuring that each pixel is rendered with the appropriate color information without exceeding the number of available sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If color grayscales are rendered and provided to sub-pixels when the number of sub-pixels is smaller than the number of color grayscales, then the display device can operate with fewer sub-pixels, but image quality deterioration occurs
Solution Approach 1:
The patent divides the original image frame into multiple sub-frames, where each sub-frame contains a subset of color grayscale information. This segmentation allows the limited sub-pixels to display different color components across multiple time periods, effectively overcoming the limitation of having fewer sub-pixels than color grayscale values while maintaining image quality.
2Loss of information
If multiple color grayscales are assigned to each pixel in the image frame, then color information is preserved, but the display device cannot accurately render all color grayscales when sub-pixel count is insufficient
Solution Approach 1:
The patent employs periodic action by sequentially displaying multiple sub-frames over time, where each sub-frame presents specific color grayscale information. This temporal periodicity allows the display device to cycle through different color components, ensuring that all color information is conveyed to the viewer over the complete frame period, thus preserving color information while adapting to limited sub-pixel availability.
Data Source
AI summary
A display device includes a processor providing an image frame, a sub-frame generator generating a first sub-frame and a second sub-frame based on the image frame, and a pixel part for sequentially displaying a first image corresponding to the first sub-frame and a second image corresponding to the second sub-frame, wherein the image frame includes a first color grayscale, a second color grayscale, and a third color grayscale for each pixel, the first sub-frame includes the first color grayscale and the second color grayscale for a first pixel, and does not include the third color grayscale, and the second sub-frame includes the second color grayscale and the third color grayscale for the first pixel, and does not include the first color grayscale.