Triangular Pixel Structure for AMOLED Aperture Ratio
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Solution Overview
Problem
The manufacturing of AMOLED display panels is limited by the minimum opening size of the Fine Metal Mask (FMM) and precision of the deposition process, making it difficult to achieve high resolution and required aperture ratios, which affects display brightness and product lifespan.
Innovation Solution
A pixel structure comprising first, second, and third sub-pixels arranged in alternating configurations along axes, with geometric centers positioned on perpendicular bisectors, allowing for improved spacing and symmetry, thereby simplifying the manufacturing process and enhancing display resolution and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the minimum opening size of FMM is used in the deposition process, then the manufacturing process can be completed, but the resolution and aperture ratio are limited
Solution Approach 1:
The patent transitions from a conventional linear arrangement of sub-pixels to a triangular lattice arrangement, effectively changing the spatial dimensionality of pixel organization. This triangular configuration allows for more efficient space utilization and higher pixel density without requiring smaller FMM openings, thus improving resolution while maintaining manufacturing feasibility.
Solution Approach 2:
The patent divides the display area into multiple sub-pixel groups arranged in a triangular pattern, with each group containing multiple sub-pixels of different colors. This segmentation approach allows for higher resolution by increasing the number of independently controllable elements while maintaining a manageable manufacturing process through standardized group configurations.
2Area of stationary object
If the distance between sub-pixels of the same color is restricted, then the deposition process can be performed, but the aperture ratio decreases
Solution Approach 1:
By arranging sub-pixels in a triangular lattice rather than a linear or grid pattern, the patent optimizes the spatial distribution of sub-pixels. This dimensional reorganization increases the aperture ratio by reducing the total area occupied by non-emissive regions while maintaining precise sub-pixel spacing through the geometric regularity of the triangular configuration.
Solution Approach 2:
The patent combines multiple sub-pixels of different colors into closely spaced groups arranged in a triangular pattern. This merging approach allows sub-pixels to be positioned closer together than in conventional designs, increasing the aperture ratio while the regular triangular spacing maintains manufacturing precision through standardized deposition patterns.
3Manufacturing precision
If different distances between sub-pixels of different colors are used, then the deposition process can be performed, but color mixing occurs and resolution is limited
Solution Approach 1:
The patent employs asymmetric positioning of different colored sub-pixels within each triangular group, where sub-pixels are arranged in specific non-uniform patterns. This asymmetric configuration within groups, combined with the symmetric triangular lattice overall, prevents color mixing by ensuring proper optical isolation while achieving high resolution through optimized color sub-pixel relationships.
Solution Approach 2:
The patent applies different spacing and positioning rules to different colored sub-pixels within each triangular group, optimizing the local arrangement of red, green, and blue sub-pixels. This local quality approach ensures that each color combination is optimized for its specific function while preventing color mixing, and the overall triangular pattern maintains high resolution across the entire display.
Data Source
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AI summary
The present disclosure provides a pixel structure. The pixel structure includes first sub-pixels, second sub-pixels, and third sub-pixels. Two adjacent third sub-pixels facing each other form a third sub-pixel group. The second sub-pixels are arranged in a row along a first axis to form second-sub-pixel rows, the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the first axis parallel to the second-sub-pixel rows, and the second-sub-pixel rows and rows formed by the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration. The second sub-pixels are arranged along a direction of a second axis to form second-sub-pixel columns, the first sub-pixels and the third sub-pixel groups are arranged in an alternating configuration along the direction of the second axis parallel to the second-sub-pixel columns, the second-sub-pixel columns and columns are arranged in an alternating configuration.