Octagonal Pixel Unit for High Resolution OLED Displays
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Solution Overview
Problem
Existing OLED displays face challenges in efficiently arranging pixels and additional functional configurations, such as touch sensors, due to the fixed quadrangular shape of pixels, which limits the creation of functional regions and resolution.
Innovation Solution
The OLED display employs an octagonal pixel unit with sub-pixels arranged in a stripe pattern, allowing for the integration of non-pixel units with various functions like light transmission or touch sensors, while maintaining high resolution by optimizing the arrangement of sub-pixels and signal lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pixels are arranged in a conventional quadrangular pattern, then the display structure is simple and easy to manufacture, but it is difficult to efficiently arrange functional configurations like touch sensors and achieves lower resolution
Solution Approach 1:
The pixel unit is divided into multiple sub-pixels (first sub-pixel, second sub-pixel, third sub-pixel) arranged in a stripe pattern within the octagonal structure. This segmentation allows for higher resolution while maintaining efficient space utilization and compatibility with functional configurations.
Solution Approach 2:
The patent employs an asymmetric octagonal pixel unit shape instead of the conventional symmetric quadrangular shape. This asymmetric design enables more efficient arrangement of sub-pixels and functional configurations, achieving higher resolution while maintaining ease of manufacture.
2Adaptability or versatility
If extra rooms are allocated for functional configurations like touch sensors, then functional regions can be implemented, but the pixel arrangement efficiency decreases and resolution is compromised
Solution Approach 1:
The non-pixel unit is designed to serve multiple functions including touch sensor integration, light transmission, and white light emission. This multi-functionality allows functional regions to be implemented without dedicating separate extra rooms, thereby maintaining high pixel density and resolution.
Solution Approach 2:
The patent integrates functional configurations in the non-pixel units that surround each pixel unit, utilizing the space in a different dimensional arrangement rather than reducing pixel area. This approach maintains high resolution while enabling functional region integration.
3Manufacturing precision
If the pixel unit shape is changed to octagonal, then space utilization for functional regions improves and resolution increases, but the manufacturing complexity increases
Solution Approach 1:
The patent changes the geometric parameter of the pixel unit from quadrangular to octagonal shape. This parameter change optimizes space utilization and resolution while the standardized octagonal design maintains ease of manufacture through consistent fabrication processes.
Data Source
AI summary
An organic light emitting diode (OLED) display device includes a substrate, a pixel unit formed over the substrate and including a plurality of sub-pixels, and a non-pixel unit immediately neighboring the pixel unit. The pixel unit has an octagonal shape.