OLED Subpixel Layout for High Density and Resolution
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Solution Overview
Problem
The layout density of subpixels in existing OLED displays is restricted, limiting the overall resolution and image quality due to complex circuit design and manufacturing processes.
Innovation Solution
The display device features subpixel groups with four first subpixels for blue light, four second subpixels for red light, and eight third subpixels for green light, arranged adjacent to each other along intersecting axes, allowing for reduced pixel pitch and increased aperture ratio, thereby enhancing resolution and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional subpixel arrangements (stripe, mosaic, delta) are used, then the manufacturing process is simpler, but the layout density of subpixels is restricted and resolution cannot be improved
Solution Approach 1:
The invention divides each pixel into multiple subpixels (4 first subpixels, 4 second subpixels, and 8 third subpixels) arranged in a grid pattern along intersecting axes, rather than using traditional stripe, mosaic, or delta arrangements. This segmentation allows for higher layout density and improved resolution while maintaining manageable circuit design through systematic organization
Solution Approach 2:
The invention transitions from one-dimensional or simple two-dimensional subpixel arrangements to a more complex two-dimensional grid arrangement along intersecting axes. By organizing subpixels in rows and columns with specific adjacency relationships, the patent achieves higher layout density without proportionally increasing circuit complexity
2Measurement precision
If the number of subpixels per pixel is increased to improve resolution, then the overall resolution and image quality improve, but the circuit design and manufacturing process become more complicated
Solution Approach 1:
The invention assigns different roles and characteristics to different groups of subpixels within each pixel. The first subpixels, second subpixels, and third subpixels have distinct adjacency relationships and emission characteristics, allowing for optimized local performance while maintaining overall system manageability through differentiated design
Data Source
AI summary
A display device includes a substrate and subpixel groups disposed on the substrate. Each subpixel group includes four first subpixels for emitting four first color lights, four second subpixels for emitting four second color lights, and eight third subpixels for emitting eight third color lights. The first subpixels, the second subpixels, and the third subpixels are respectively arranged adjacent to each other along a first axis and a second axis intersecting the first axis, in which each of the first subpixels is located adjacent to another one of the first subpixels along the first axis or the second axis, each of the second subpixels is located adjacent to another one of the second subpixels along the first axis or the second axis, and each of the third subpixels is located adjacent to another one of the third subpixels along at least one of the first axis and the second axis.