OLED Pixel Structure Asymmetry for Chromaticity Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current pixel structures in OLED displays, such as traditional RGB arrangements, result in non-uniform chromaticity due to human eyes having stronger discriminating power for red and green images than blue, leading to a poor matching effect between color sub-pixel units and visual perception.
Innovation Solution
A pixel structure is designed where the color sub-pixel unit with poorer human eye discrimination, typically blue, is positioned centrally with larger area, and red and green sub-pixel units are arranged around it, optimizing their arrangement and areas to improve chromaticity uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional RGB arrangement with equal area sub-pixel units is used, then manufacturing simplicity is maintained, but chromaticity uniformity of display image deteriorates due to poor matching with human visual perception
Solution Approach 1:
The patent applies local quality by differentiating the area and position of sub-pixel units based on their color. Specifically, the blue sub-pixel unit (to which human eyes have poor discriminating power) is positioned in the central position with a larger area, while red and green sub-pixel units are positioned around it with smaller areas. This local differentiation optimizes the matching between color sub-pixel units and human visual perception, thereby improving chromaticity uniformity of the display image.
Solution Approach 2:
The patent employs asymmetry by breaking the traditional equal-area symmetric arrangement of RGB sub-pixel units. The blue sub-pixel unit is designed with a larger area than the red and green sub-pixel units, and is positioned centrally while red and green units surround it. This asymmetric configuration compensates for the weaker human eye discrimination of blue images, achieving better chromaticity uniformity without complicating the manufacturing process.
2Device complexity
If equal area sub-pixel units are arranged in traditional RGB manner, then device complexity is reduced, but visual effect matching deteriorates due to stronger human eye discrimination of red and green compared to blue
Solution Approach 1:
The patent applies local quality by differentiating the area and position of sub-pixel units based on their color. Specifically, the blue sub-pixel unit (to which human eyes have poor discriminating power) is positioned in the central position with a larger area, while red and green sub-pixel units are positioned around it with smaller areas. This local differentiation optimizes the matching between color sub-pixel units and human visual perception, thereby improving chromaticity uniformity of the display image.
Solution Approach 2:
The patent changes the area parameter of sub-pixel units based on human visual perception characteristics. The blue sub-pixel unit is designed with a larger area than the red and green sub-pixel units, and is positioned centrally while red and green units surround it. This parameter change compensates for the weaker human eye discrimination of blue images, achieving better chromaticity uniformity without complicating the manufacturing process.
Data Source
AI summary
The present invention discloses a pixel structure and a manufacturing method thereof, a light-emitting device, an array substrate and a display device. The pixel structure comprises a plurality of pixel units sequentially arranged, each pixel unit comprising a plurality of color sub-pixel units, wherein the color sub-pixel unit of a certain color to which human eyes have poor discriminating power is positioned in a central position of the pixel unit, and the color sub-pixel units of the remaining colors are positioned around the color sub-pixel unit of the certain color, and an area of the color sub-pixel unit of the certain color is larger than that of any one of the color sub-pixel units of the remaining colors.