Display Device Pixel Segmentation for Power Reduction
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption while maintaining high definition and color reproducibility, particularly when incorporating a white pixel in a unit area with a high definition green pixel and low definition red and blue pixels.
Innovation Solution
The display device incorporates low definition pixels, such as larger red and blue pixels, and high definition pixels, including a white pixel and a green pixel, arranged in a specific pattern to reduce pixel integration and improve luminance, with the white pixel contributing to common white light emission to decrease overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a white pixel is added to a unit area with high definition green pixel and low definition red and blue pixels to reduce power consumption, then power consumption is reduced, but the pixel arrangement complexity increases
Solution Approach 1:
The display device divides pixels into two categories: high definition pixels (green and white) with smaller areas and low definition pixels (red and blue) with larger areas. This segmentation allows the system to use smaller, more energy-efficient pixels for colors that require higher definition (green and white), while using larger pixels for colors that can tolerate lower definition (red and blue), thereby reducing overall power consumption while managing arrangement complexity through systematic classification
Solution Approach 2:
Different pixel sizes and definitions are assigned to different color sub-pixels based on their specific requirements. The green and white sub-pixels use smaller high definition pixel areas optimized for their function, while red and blue sub-pixels use larger low definition pixel areas. This local optimization allows each pixel type to operate at its most efficient point, reducing total power consumption while maintaining overall display quality
2Measurement precision
If high definition green pixels with small area are used to improve definition, then image definition is improved, but the pixel integration degree increases
Solution Approach 1:
The patent segments pixels by definition level and color type, creating distinct high definition pixels (green, white) and low definition pixels (red, blue). This segmentation strategy allows high definition pixels to be concentrated only where needed (green channel for definition, white for luminance), rather than uniformly across all pixels, thereby improving image definition while controlling the overall integration degree
Solution Approach 2:
Instead of making all pixels high definition with small areas, the patent inverts the approach by making only necessary pixels high definition with small areas (green and white), while allowing other pixels (red and blue) to be low definition with larger areas. This inversion reduces the overall pixel integration degree while maintaining definition where it matters most
3Device complexity
If low definition red and blue pixels with large area are used to reduce pixel integration degree, then pixel integration degree is reduced, but color reproducibility may be compromised
Solution Approach 1:
The patent merges the functions of red and blue color reproduction into larger low definition pixels, while relying on the high definition green pixels and white pixels to provide the necessary luminance and definition. The white pixel contributes to common white light emission, and the green pixel provides high definition reference, allowing the system to achieve acceptable color reproducibility even with larger low definition red and blue pixels
Solution Approach 2:
The patent changes the area parameter of red and blue pixels to be larger than the specified standard, making them low definition pixels. This parameter change reduces pixel integration degree while the system compensates for potential color reproduction issues through the complementary high definition green and white pixels, balancing the trade-off between integration degree and color reproducibility
Data Source
AI summary
A display device includes plural unit areas each of which includes low definition pixels as sub-pixels larger than a specified standard and high definition pixels as sub-pixels smaller than the specified standard and which are regularly arranged. The low definition pixels include a blue pixel and a red pixel, and the high definition pixels include a white pixel and a green pixel.