Display Panel with Multi-Radius Bending for Edge Screens
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Solution Overview
Problem
Conventional display devices are limited in their ability to provide a display screen on side surfaces, as they typically require a uniform bending structure for the driving circuit, which restricts the flexibility and efficiency of edge-based display implementations.
Innovation Solution
A display device with a display panel featuring multiple bending portions of varying radii of curvature, allowing for a flexible and efficient edge-based display configuration, where the first, second, and third bending portions have distinct curvatures, enabling a screen to be provided on side surfaces, and a cover window that overlaps specific areas while maintaining protection and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a uniform bending structure is used for the driving circuit, then the structural integrity is maintained, but the flexibility and efficiency of edge-based display implementations are restricted
Solution Approach 1:
The bending structure is divided into multiple bending portions (first, second, and third bending portions) with different radii of curvature. Each bending portion is segmented to perform a specific function: the first bending portion connects to the display area, the second bending portion has a smaller radius for compact routing, and the third bending portion connects to the driving circuit area. This segmentation enables flexible edge-based display implementation while maintaining structural integrity.
Solution Approach 2:
Different regions of the bending structure are assigned different radii of curvature tailored to their specific functional requirements. The first bending portion has a larger radius to maintain display quality, the second bending portion has a smaller radius for efficient space utilization, and the third bending portion has an optimized radius for driving circuit connection. This local differentiation resolves the contradiction between flexibility and structural complexity.
2Adaptability or versatility
If the display panel is bent to provide display screen on side surfaces, then the versatility of display configuration is improved, but the structural integrity and protection of the display panel may be compromised
Solution Approach 1:
The bending portions are designed with optimized radii of curvature that follow spherical or elliptical arc patterns. This curvature design allows the display panel to bend smoothly along the side edges while distributing mechanical stress evenly, preventing cracks and maintaining structural integrity. The specific radius values are chosen to balance flexibility for side display with protection against structural failure.
3Productivity
If multiple bending portions with different radii of curvature are used, then the efficiency of edge-based display is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies concrete parameter ranges for the radii of curvature of different bending portions, optimizing them for efficient edge display while considering manufacturability. By establishing specific radius values and relationships between different bending portions, the design achieves high productivity through standardized parameters that can be manufactured with conventional precision, avoiding excessively tight tolerances.
Data Source
AI summary
A display device includes: a display panel including first and second areas, and a bending portion between the first and second areas; and a cover window on the display panel. The first area is between the cover window and the second area when the display panel is in a bent state, the first bending portion is between the cover window and the third bending portion when the display panel is in the bent state, and the bending portion includes a first bending portion extending from the first area, a second bending portion extending from the first bending portion, and a third bending portion between the second bending portion and the second area. A radius of curvature of the second bending portion is less than that of the first bending portion, and the radius of curvature of the second bending portion is less than that of the third bending portion.