Display Panel Corner Wiring Layout for Crease-Resistant Bending
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Solution Overview
Problem
Conventional four-curved side display panels experience creases at corner areas when attached to Gaussian surfaces, leading to signal line breakage due to inherent curvature issues.
Innovation Solution
A display panel design featuring a base substrate with a flat display area and bending areas, including signal wiring with a bridge line in the corner area that has greater elongation than the primary line, enhancing bending resistance and preventing crease-induced breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display panels are attached to Gaussian surfaces (spherical corner areas), then overall display effects of four-curved side products are improved, but corner areas of the display panels are prone to creases, causing signal lines to break easily
Solution Approach 1:
The patent changes the physical parameters of the signal line by introducing a bridge line with different geometric characteristics (greater elongation) in the corner area. This parameter change allows the signal line to accommodate the Gaussian curvature of the spherical corner without breaking, thus maintaining both display effect and signal line integrity
Solution Approach 2:
The signal line is segmented into two distinct parts: a first line in the bending area and a bridge line in the corner area. This segmentation allows each segment to be optimized independently - the first line for standard bending and the bridge line for the complex Gaussian curvature of the corner, preventing crease-induced breakage
2Strength
If bridge line with greater elongation is designed in corner area, then bending resistance of signal wiring is improved, but signal wiring structure becomes more complex
Solution Approach 1:
The patent applies local quality by designing the bridge line with greater elongation specifically in the corner area where Gaussian curvature exists, while the first line in the bending area maintains standard characteristics. This localized optimization provides enhanced bending resistance where needed without unnecessarily complicating the entire signal wiring structure
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a base substrate and a signal wiring disposed on the base substrate. The base substrate includes a first bending area and a second bending area adjoining each other, and a corner area located between the first bending area and the second bending area. The signal wiring includes a first line and a bridge line connected to the first line. The first line is located in the first bending area, the bridge line is located in the corner area, and elongation of the bridge line is greater than elongation of the first line.