Display Panel Metal Lines with Concave Sides for Sealant Adhesion
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Solution Overview
Problem
Current display panels face challenges in achieving improved display quality due to limitations in the structure of metal lines, which affect the adhesion of sealants and resistance within the display regions, leading to issues such as peeling and decreased anti-static capability.
Innovation Solution
The display panel incorporates metal lines with specific structures in non-display and display regions, featuring concave shapes in non-display regions for enhanced sealant adhesion and protruded central regions in display regions to increase cross-sectional area and reduce resistance, preventing charge accumulation and point discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the metal line structure is simplified for ease of manufacture, then manufacturing complexity is reduced, but sealant adhesion deteriorates leading to peeling issues
Solution Approach 1:
The patent applies different structural configurations to metal lines in different regions: non-display region metal lines have sides extending beyond the sealant coverage area to provide mechanical anchoring for sealant adhesion, while display region metal lines have protruded central regions to reduce resistance. This local differentiation resolves the contradiction by optimizing each region's metal line structure for its specific functional requirements.
2Reliability
If the metal line cross-sectional area is increased to reduce resistance, then electrical performance is improved, but device complexity increases
Solution Approach 1:
The patent implements region-specific metal line designs: display region metal lines feature protruded central regions that increase cross-sectional area and reduce resistance where electrical performance is critical, while non-display region metal lines have extended sides for sealant adhesion. This localized approach improves electrical performance where needed without unnecessarily complicating the overall device structure.
3Volume of moving object
If the metal line side is positioned close to the substrate edge for compact design, then device volume is reduced, but sealant adhesion deteriorates
Solution Approach 1:
The patent designs non-display region metal lines with sides that extend beyond the sealant coverage area toward the substrate edge, providing mechanical anchoring for sealant adhesion. This configuration allows compact design while maintaining reliable sealant attachment through the extended side structure that engages with the sealant material.
Data Source
AI summary
A display panel is disclosed, which includes: a first substrate; a first metal line disposed above the first substrate and having a first surface and a first side, wherein the first side connects to the first surface, and the first side has a concave shape; and a sealant unit in contact with the first metal line, wherein the first metal line includes a first metal layer, a second metal layer and a third metal layer, the second metal layer locates between the first metal layer and the third metal layer, the sealant covers at least a portion of the first metal layer, and a part of the sealant locates between the first metal layer and the third metal layer.