Segmented Metal Lines for Uniform Laser Sealing

The patent divides the metal line structure into multiple segments: a first metal line directly below the sealing material, a second metal line spaced apart from the first metal line, and connectors connecting them. This segmentation allows the adhesive function to be distributed across multiple elements rather than relying on a single wide metal line, thereby maintaining adhesive strength while preventing sealing material unevenness.

The connectors serve as intermediary elements that link the first metal line (which provides adhesion to the sealing material) and the second metal line (which is spaced apart to avoid direct contact). This intermediary structure enables the system to achieve both strong adhesion and uniform sealing material formation by mediating between the conflicting requirements.

By segmenting the metal line into multiple narrower lines (first and second metal lines connected by connectors), the structure creates multiple smaller bonding zones rather than one large continuous zone. This segmentation prevents air bubbles from being trapped in large pockets, as the smaller gaps between the segmented metal lines allow for better air evacuation during the bonding process.

The patent extends the metal line structure into a third dimension by spacing the second metal line apart from the first metal line and connecting them with connectors. This vertical dimensionality change creates a multi-level structure that allows air bubbles to escape more easily during sealing, preventing delamination while maintaining overall adhesive strength.