Foldable Display Panel Sub-Pixel Segmentation Aperture Ratio
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Solution Overview
Problem
The aperture ratio of existing display panels is limited to about 33% due to the inability to simultaneously emit multiple colors of light from each pixel, which affects resolution and service life.
Innovation Solution
A foldable display panel design featuring multiple sub-pixels arranged in a configuration where each sub-pixel, when combined, forms a single pixel unit, with the first and second sub-pixels being double-sided illuminated and the third sub-pixel single-sided illuminated, allowing for near 100% aperture ratio by optimizing light emission and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a single-colored light is allowed to pass at the same time in each pixel, then the display panel can maintain simple structure and control, but the aperture ratio is limited to about 33%
Solution Approach 1:
The pixel is segmented into three sub-pixels (first sub-pixel, second sub-pixel, third sub-pixel) corresponding to red, green, and blue colors respectively. Each sub-pixel can independently emit or pass its corresponding color light, allowing multiple colors to be displayed simultaneously while maintaining control simplicity. This segmentation enables the aperture ratio to reach near 100% as all sub-pixels can be active at the same time.
Solution Approach 2:
The patent introduces a vertical stacking dimension by arranging the three sub-pixels in different layers (first sub-pixel in first display area, second sub-pixel in second display area, third sub-pixel in third display area). This vertical arrangement allows all sub-pixels to emit light simultaneously toward the viewer, achieving near 100% aperture ratio while maintaining manageable structural complexity through layered organization.
2Measurement precision
If resolution is increased, then display quality is improved, but aperture ratio and service life of the display panel will inevitably decrease
Solution Approach 1:
By transitioning from a planar arrangement to a vertical stacked arrangement of sub-pixels, the patent achieves higher resolution without sacrificing aperture ratio. The vertical stacking allows sub-pixels to be positioned in different layers (first display area, second display area, third display area) while all contributing to the same pixel output, enabling high resolution with near 100% aperture ratio.
3Measurement precision
If resolution is increased, then display quality is improved, but service life of the display panel will inevitably decrease
Solution Approach 1:
The pixel is segmented into three sub-pixels (first sub-pixel, second sub-pixel, third sub-pixel) corresponding to red, green, and blue colors respectively. Each sub-pixel can independently emit or pass its corresponding color light, allowing multiple colors to be displayed simultaneously while maintaining control simplicity. This segmentation enables the aperture ratio to reach near 100% as all sub-pixels can be active at the same time.
Data Source
AI summary
A foldable display panel comprises a first display area, a second display area, a third display area, a first folding area, and a second folding area. The first folding area is configured to connect the first display area and the second display area. The second folding area is configured to connect the third display area and the second display area. When the first folding area is in a folded state, the first display area is located directly above the second display area. When the second folding area is in a folded state, the third display area is located directly below the second display area. A first sub-pixel of the first display area, and both a second sub-pixel of the second display area and a third sub-pixel of the third display area, each corresponding to the first sub-pixel, constitute a single pixel unit of the combined display panel.