Advantages and functions of back drilling

The following are the advantages and functions of back drilling, I hope you can help you understand more.

What are the advantages of back drilling?

1) Reduce noise interference;
2) Improve signal integrity;
3) The local plate thickness becomes smaller;
4) Reduce the use of buried blind holes and reduce the difficulty of PCB manufacturing.

What is the role of back drilling?

The role of back-drilling is to drill out the through-hole sections that do not have any connection or transmission function, so as to avoid reflection, scattering and delay of high-speed signal transmission. Studies that bring "distortion" to the signal show that the main factors that affect the signal integrity of the signal system are design, board materials, transmission lines, connectors, chip packaging, and other factors. Vias have a greater impact on signal integrity.