Flexible PCB Layer Stackup: The Hidden Foundation of Bendable Electronics
Every foldable phone, curved automotive sensor, wearable medical patch, and high-flex robotic joint depends on a deceptively simple question: how are the conductive layers arranged inside a flexible circuit? The answer lies in the flexible PCB layer stackup—the precise sequence of copper, adhesive, polyimide, and protective materials that determines whether a circuit bends reliably for…