Display Panel Cut-Line Structure for Crack-Resistant Shaping
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Solution Overview
Problem
Existing display technologies face challenges in manufacturing display panels with personalized shapes and reducing crack formation during cutting, which affects yield and reliability.
Innovation Solution
A display panel design featuring inner and outer cut lines with crack dams and grooves, filled with organic material, and a motherboard structure with intersecting cut lines allows for versatile cutting options to achieve desired shapes while minimizing crack propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cut lines are provided at local positions of motherboard structures to manufacture display panels of different shapes, then manufacturing versatility is improved, but crack formation during cutting increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring crack dams and stress relief grooves in the motherboard structure before cutting operations. These preventive features are built into the rigid substrate during manufacturing, allowing multiple cut lines to be used for different display panel shapes without causing cracks, as the crack dams and grooves proactively mitigate stress concentration at cut line locations.
2Adaptability or versatility
If cut lines are provided for personalized display panel shapes, then adaptability is improved, but manufacturing precision deteriorates due to crack formation
Solution Approach 1:
The patent implements preliminary action by pre-forming crack dams and stress relief grooves in the rigid substrate before any cutting operations. These features are integrated into the motherboard structure during manufacturing, enabling precise cutting along multiple possible cut lines for personalized display panel shapes without the risk of crack formation that would compromise cutting precision.
3Adaptability or versatility
If multiple cut lines and crack prevention features are added to the motherboard structure, then manufacturing versatility and reliability are improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the crack prevention mechanism into distinct functional elements: crack dams that block crack propagation and stress relief grooves that reduce stress concentration. These segmented features are strategically placed at specific locations along cut lines in the motherboard structure, providing versatile cutting options while maintaining manageable structural complexity through modular design.
Data Source
AI summary
The present disclosure provides a display panel (PNL), a motherboard structure, and a display device, and belongs to the field of display technologies. The display panel (PNL) has a display area (AA) and a peripheral area (BB) surrounding the display area (AA); and the peripheral area (BB) has an inner cut line (ICUT) surrounding the display area (AA). The motherboard structure includes a plurality of display panels (PNL), and the motherboard structure has a main cut line (MCUT) between the display panels (PNL). An outer cut line (OCUT) is disposed in at least a partial area between the main cut line (MCUT) and the inner cut line (ICUT) of the display panel (PNL); an end of the outer cut line (OCUT) is intersected with the inner cut line (ICUT); and a second crack dam (DAM2) is disposed between the outer cut line (OCUT) and the inner cut line (ICUT).


