Tiled Display Sub-Pixel Orientation for Reduced Seam Visibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large display devices with high resolution face challenges in productivity and reliability due to increased defect rates of light-emitting elements, particularly in tiled displays where multiple devices are connected, leading to marginal areas that affect image quality and seam visibility.
Innovation Solution
A tiled display design where sub-pixels are arranged differently in boundary areas to create marginal areas for attaching and cutting display devices, ensuring high resolution and minimizing seam visibility by aligning sub-pixels parallel to the sides of adjacent display devices, with specific sub-pixel configurations in first, second, and third boundary areas to optimize pixel placement and color emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display devices are connected to form a large screen, then the screen size is increased, but the defect rate of light-emitting elements increases and productivity deteriorates
Solution Approach 1:
The display system is divided into multiple independent display devices (first display device, second display device, etc.) that are connected to form a tiled display. Each display device contains its own pixels and sub-pixels, allowing the large screen to be constructed from smaller, more reliable units with lower individual defect rates.
2Area of stationary object
If multiple display devices are connected to form a large screen, then the screen size is increased, but productivity deteriorates
Solution Approach 1:
The display is segmented into multiple standard-sized display devices that can be manufactured independently using standardized processes. This segmentation enables parallel production, improving overall productivity while achieving a large final screen area through assembly of multiple units.
Solution Approach 2:
Different pixel configurations are applied to different boundary areas. First pixels with sub-pixels parallel to longer sides are used in first boundary areas, while second pixels with sub-pixels parallel to shorter sides are used in second boundary areas. This local differentiation optimizes the tiling process and improves manufacturing efficiency.
3Measurement precision
If high resolution is implemented, then the image quality is improved, but the size of marginal areas is reduced
Solution Approach 1:
Different pixel arrangements are used in different boundary areas to maintain adequate marginal areas even at high resolutions. First pixels and second pixels are strategically placed in first and second boundary areas respectively, creating sufficient space for device attachment and cutting processes while preserving high image quality in the display regions.
Solution Approach 2:
The pixel arrangements in boundary areas are made asymmetric and different from standard pixel patterns. First pixels have sub-pixels oriented parallel to longer sides, while second pixels have sub-pixels oriented parallel to shorter sides. This asymmetric design allows for adequate marginal areas to be maintained despite high resolution requirements.
4Ease of manufacture
If sub-pixels are arranged parallel to longer sides in first boundary area, then the marginal area for attachment is created, but the pixel arrangement becomes complex
Solution Approach 1:
The complex pixel arrangement is applied only locally in boundary areas where it is needed for manufacturing purposes, while the majority of the display area uses standard pixel configurations. First pixels are placed in first boundary areas and second pixels in second boundary areas, minimizing the impact of the complex arrangement on overall device complexity.
Data Source
AI summary
A tiled display comprises display devices adjacent to one another and each comprising first pixels and second pixels, a first boundary area where longer sides of at least two of the display devices are adjacent to each other, and a second boundary area where shorter sides of at least two of the display devices are adjacent to each other. Each of the first pixels and the second pixels comprises sub-pixels. The first pixels are disposed in the first boundary area such that the sub-pixels of the first pixels are parallel to the longer sides of the display devices. The second pixels are disposed in the second boundary area such that the sub-pixels of the second pixels are parallel to the shorter sides of the display devices.