Corner-Opening Display Panel for Bent Cover Window Alignment
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Solution Overview
Problem
Existing display devices face challenges in effectively displaying images in corner areas due to structural limitations and alignment issues between the display panel and cover window, particularly when the device is bent to form a predetermined angle.
Innovation Solution
The display panel incorporates a substrate with specific pixel arrangements and inorganic layers defining unique openings, including a first alignment mark on the corner area, allowing for precise alignment with a cover window and enabling image display even in bent configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display panel uses a conventional structure without corner openings, then the manufacturing process is simpler, but image display in corner areas is not achieved and alignment accuracy with cover window is poor
Solution Approach 1:
The inorganic layer is segmented to create multiple openings (first opening, second opening, third opening) at different corner areas of the display panel. Each opening serves as a distinct alignment mark, enabling precise alignment between the display panel and cover window while maintaining image display capability in corner regions.
Solution Approach 2:
The patent applies different opening configurations to different corner areas of the display panel. The first opening is positioned at a first corner area, the second opening at a second corner area, and the third opening at a third corner area, allowing localized alignment solutions that preserve image display quality in each specific corner region.
2Adaptability or versatility
If the display panel is bent to form a predetermined angle, then the device achieves flexible configuration and aesthetic appeal, but alignment between display panel and cover window becomes difficult and image display in corner areas is compromised
Solution Approach 1:
The alignment marks (openings) are pre-positioned at specific corner areas of the display panel before bending. This preliminary positioning ensures that even when the display panel is bent to a predetermined angle, the alignment marks remain in predictable locations, enabling accurate alignment with the cover window in the bent configuration.
Solution Approach 2:
The patent extends the alignment solution from a two-dimensional flat plane to a three-dimensional bent structure by positioning openings at multiple corner areas that remain visible and accessible after bending. This allows alignment to be achieved in both flat and bent states, providing adaptability to different device configurations.
3Manufacturing precision
If openings are added to the inorganic layer for alignment marks, then alignment accuracy with cover window is improved, but the inorganic layer structure becomes more complex and vulnerable to damage
Solution Approach 1:
The openings are localized to specific corner areas of the inorganic layer rather than being distributed throughout the entire structure. This localized approach minimizes the impact on overall structural integrity while providing sufficient alignment reference points for accurate alignment between the display panel and cover window.
Solution Approach 2:
The patent employs asymmetric positioning of openings at different corner areas, with each opening serving a specific alignment function. This asymmetric configuration optimizes alignment accuracy for the bent display configuration while using minimal material removal, thereby maintaining the reliability and structural soundness of the inorganic layer.
Data Source
AI summary
A display panel includes a substrate including a central area and a corner area on an outer side of the central area, a plurality of pixels arranged on the substrate and including a first pixel, a second pixel, a third pixel, and a fourth pixel which overlap the corner area, and an inorganic layer defining a first opening, which is arranged between the first pixel and the second pixel, and a second opening, which is arranged between the third pixel and the fourth pixel, where a shape of the first opening is different from a shape of the second opening.