Flexible Circuit Pad Width Gradient for Display Bonding Alignment

The patent applies local quality by creating different width characteristics at different locations of the substrate pads. Specifically, the substrate pads have wider widths at their outer edges compared to their inner edges, with the width varying gradually across the pad surface. This local variation in width compensates for thermal compression-induced misalignment, ensuring that the overlap area between substrate pads and display pads remains optimal throughout the bonding process.

The patent implements parameter changes by modifying the width parameter of substrate pads across different regions. The width of substrate pads is designed to increase from the inner edge to the outer edge, creating a gradient width profile. This parameter variation allows the bonding structure to accommodate thermal compression effects while maintaining proper alignment and electrical coupling between the flexible circuit board and display panel.

The patent applies local quality by creating different width characteristics at different locations of the substrate pads. Specifically, the substrate pads have wider widths at their outer edges compared to their inner edges, with the width varying gradually across the pad surface. This local variation in width compensates for thermal compression-induced misalignment, ensuring that the overlap area between substrate pads and display pads remains optimal throughout the bonding process.

The patent employs asymmetry by designing substrate pads with non-uniform width distribution. Rather than using symmetric uniform widths, the pads feature asymmetric width profiles where the outer portions are wider than the inner portions. This asymmetric design specifically addresses the asymmetric nature of thermal compression effects, providing better alignment compensation while maintaining manufacturing feasibility through standard photolithography processes.