OLED Display Substrate Routing to Mitigate Frit-Glue Shrinkage

The patent changes the geometric parameters of the power source lines by introducing bent structures with specific curvature radii and angle ranges. The power source lines include first bent portions with curvature radius (50-200) μm and second bent portions with curvature radius (20-100) μm, forming angles between 45-135 degrees. This geometric parameter optimization prevents direct alignment with laser sintering paths, reducing frit glue shrinkage and maintaining encapsulation integrity.

The patent introduces fanout lines as intermediary structures between the power source lines and the display region. These fanout lines with specific width ranges (50-200) μm serve as mediators that distribute power while their geometric configuration further prevents direct laser sintering paths, adding an additional layer of protection against frit glue shrinkage.

The patent employs asymmetric bent configurations in the power source lines, where the first bent portions and second bent portions have different curvature radii and are positioned at specific angles. This asymmetric design ensures that the power source lines do not follow straight paths that would align with laser sintering directions, thereby preventing encapsulation failure while maintaining power supply functionality.

The patent transitions from linear power source line arrangements to multi-dimensional bent configurations. By introducing angular deviations and varying curvature radii in different directions, the power source lines are repositioned in a multi-dimensional space to avoid collision with laser sintering paths, solving the alignment problem while preserving electrical connectivity.

The patent makes the existing power source lines and fanout lines serve dual functions: both power supply and encapsulation support. By optimizing the geometric parameters of these existing structures (bent portions with specific curvature radii and angles), they automatically prevent frit glue shrinkage during laser sintering without requiring additional film layers, achieving self-service protection.

The patent enhances the multi-functionality of the power source lines and fanout lines by having them simultaneously serve as power supply conduits and as structural elements that prevent encapsulation failure. The bent configurations with optimized curvature radii and angles provide both electrical connectivity and mechanical protection against laser sintering-induced shrinkage, eliminating the need for separate protective film layers.