OLED Sub-Pixel Layout for High-Resolution Low-Power Displays
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Solution Overview
Problem
The development of high-resolution organic light emitting display devices is hindered by the limitations in reducing the non-emission areas between pixels, which restricts the size of sub-pixels and increases power consumption, making it difficult to achieve both high resolution and long lifespan.
Innovation Solution
The solution involves arranging sub-pixels of the same color adjacent to each other to minimize the distance between them, allowing for a larger pixel size while maintaining sufficient spacing between sub-pixels of different colors, thereby reducing power consumption and enhancing the lifespan of the organic light emitting diode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the size of sub pixels is increased to improve brightness and reduce power consumption, then the lifespan is improved, but the resolution decreases due to larger non-emission areas between sub pixels
Solution Approach 1:
The patent changes the spatial arrangement of sub pixels from a conventional alternating pattern (RGBRGB) to a same-color adjacent pattern (RRGGBB). This dimensional reorganization allows sub pixels of the same color to be grouped together, minimizing the non-emission areas between them while maintaining sufficient spacing between different color groups. The result is increased effective emission area for each sub pixel, improving brightness and reducing power consumption without sacrificing resolution.
Solution Approach 2:
The patent merges sub pixels of the same color into adjacent groups (red sub pixels next to each other, green sub pixels next to each other, blue sub pixels next to each other). This merging strategy reduces the total number of non-emission areas between sub pixels of the same color, thereby increasing the effective emission area and improving brightness while maintaining resolution.
2Manufacturing precision
If the non-emission area between sub pixels is reduced to increase resolution, then the manufacturing precision improves, but the sub pixel size decreases leading to increased power consumption and reduced lifespan
Solution Approach 1:
By reorganizing the spatial arrangement of sub pixels from alternating colors to same-color groups, the patent minimizes non-emission areas between sub pixels of the same color. This dimensional change allows for smaller non-emission gaps while maintaining larger effective sub pixel sizes, thereby achieving high resolution without increasing power consumption.
Solution Approach 2:
The patent combines sub pixels of the same color into adjacent groups, which reduces the total length of non-emission areas required between sub pixels. This merging approach allows for smaller non-emission gaps while maintaining larger sub pixel emission areas, thus improving resolution without sacrificing energy efficiency.
3Manufacturing precision
If the sub pixel size is decreased to achieve high resolution, then the manufacturing precision improves, but the lifespan is reduced due to increased power consumption
Solution Approach 1:
The patent reorganizes sub pixel arrangement into same-color groups, which minimizes non-emission areas between sub pixels of the same color. This allows for smaller sub pixel dimensions to be achieved while maintaining adequate emission area, thereby achieving high resolution without excessive power consumption that would reduce lifespan.
Solution Approach 2:
By merging sub pixels of the same color into adjacent groups, the patent reduces the total non-emission area required. This enables smaller sub pixel sizes to be used while maintaining sufficient effective emission area, achieving high resolution without the power consumption penalty that would otherwise reduce device lifespan.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively increases the size of sub-pixels, improves brightness, reduces power consumption, and extends the lifespan of the organic light emitting display device by minimizing the distance between sub-pixels of the same color and maintaining adequate spacing between those of different colors, thus overcoming the limitations of existing technologies.
Implementation Method 1
The OLED device includes a plurality of pixels. Each of the plurality of pixels includes at least a red sub pixel, a green sub pixel, and a blue sub pixel. The red sub pixel, the green sub pixel, and the blue sub pixel emit red, green, and blue lights, respectively.
Data Source
AI summary
Discussed is an organic light emitting display device, including a plurality of pixels. Each pixel includes a red sub pixel, green sub pixels, and a blue sub pixel. The red sub pixels and the blue sub pixels are aligned in a first direction. The green sub pixels are disposed between the red sub pixel and the blue sub pixel. The red sub pixel, the green sub pixels, and the blue sub pixel of a first pixel form a first group, and the red sub pixel, the green sub pixels, and the blue sub pixel of a second pixel form a second group. The first group and the second group are symmetric with the first direction. The red sub pixels and the blue sub pixels are disposed at a second line parallel to a second direction perpendicular to the first direction.