Curved Display Panel with Segmented Fixation for Stress Reduction
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Solution Overview
Problem
Wide-screen liquid crystal displays face issues with viewpoint differences and glare-off, leading to display defects like mura and yellowish defects due to curvature stress, which conventional solutions fail to adequately address.
Innovation Solution
A curved display apparatus with multiple curvatures is designed, where the display panel is supported by fixation members to maintain varying curvatures, reducing stress and minimizing defects by distributing curvature radii across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is curved to improve viewing angles and reduce glare-off, then the display coverage and viewing experience are improved, but curvature stress causes mura defects and yellowish defects
Solution Approach 1:
The display panel is divided into multiple regions (first region, second region, third region) with different curvature requirements. The fixation member applies different curvature radii to different segments of the panel, allowing each region to be optimized independently for viewing angles while reducing overall stress concentration that causes defects.
Solution Approach 2:
Different regions of the display panel are given different curvature characteristics. The first region has a first curvature radius, the second region has a second curvature radius, and the third region has a third curvature radius. This local differentiation allows the panel to maintain optimal viewing angles in each area while distributing mechanical stress to prevent mura and yellowish defects.
2Ease of manufacture
If a single curvature is applied to the display panel to simplify manufacturing, then the manufacturing process is easier, but stress concentration leads to increased display defects
Solution Approach 1:
Instead of applying a single curvature to the entire panel, the fixation member is designed with multiple curvature radii corresponding to different regions. This segmented approach allows each region to be optimized for its specific functional requirements while distributing mechanical stress to reduce defect formation.
Solution Approach 2:
The curvature radius parameter is varied across different regions of the display panel. The first region has a first curvature radius, the second region has a second curvature radius, and the third region has a third curvature radius. This parameter differentiation optimizes both manufacturing feasibility and display quality by preventing stress concentration.
3Area of stationary object
If the display panel is made wider to meet viewer demands, then the screen real estate and viewing experience are improved, but viewpoint difference between center and edges increases
Solution Approach 1:
The display panel is curved instead of being flat, which allows the screen to wrap around the viewer's field of view more effectively. This curvature enables wider screen real estate while maintaining more uniform viewing angles across the entire display area, reducing the viewpoint difference between center and edges.
Solution Approach 2:
Different regions of the wide display panel are given different curvature characteristics to optimize viewing from various positions. The fixation member applies varying curvature radii to different segments, ensuring that each region provides optimal viewing angles for its specific location on the wide screen.
Data Source
AI summary
A curved display apparatus and a multi display system having the same are provided. The curved display apparatus includes a display panel, and a fixation member which fixes the display panel so that the display panel is curved with multiple curvatures.