Details of test chip designs: pad pitch, layout, materials, and opening.

PCB Design Considerations and Guidelines for 0.4mm and 0.5mm WLPs

PCB Review Request] Review for prototype PCB built around MAX86171

Pitch: SMD Pitch, IC Pitch - PCB Design, Fab & Assembly

Test board layout of a single layer FR4 board (5 cm 2 7 cm) with daisy

PCB Design Rules for Chip-on-Board Layout

Bump on Pad, Wafer Process Technology

PCB Pads - MorePCB

PCB pad design principles

pub.mdpi-res.com/jlpea/jlpea-11-00002/article_depl

Fine Pitch Technology (FPT): PCB Board Assembly

RDL and Flip Chip Design

What is Pad to Pad (PP) ?