PCB Tech - Application of Laser Technology in Multilayer PCB Production

Laser PCB processing technology is a technology that uses the characteristics of the interaction between the laser beam and the substance to cut, weld, surface treatment, perforate, micromachining, and use as a light source to identify objects. Traditional The largest application area is laser PCB processing technology. Laser technology is a comprehensive technology involving multiple disciplines such as light, mechanics, electricity, materials and testing. Traditionally, its research scope can generally be divided into:

1. Laser PCB processing system. Including lasers, light guide systems, processing machine tools, control systems and inspection systems.

2. Laser PCB processing technology. Including cutting, welding, surface treatment, punching, marking, scribing, fine-tuning and other processing techniques.

Laser welding: sealing devices such as automobile body thick and thin plates, automobile parts, lithium batteries, cardiac pacemakers, sealed relays, and various devices that do not allow welding pollution and deformation. The lasers currently in use include YAG lasers, CO2 lasers and semiconductor pump lasers.

Laser cutting: automotive industry, computer, electrical casing, wooden knife mold industry, cutting of various metal parts and special materials, circular saw blades, acrylic, spring gaskets, copper plates for electronic parts below 2mm, and some metals Mesh panels, steel pipes, tin-plated iron plates, lead-plated steel plates, phosphor bronze, bakelite, thin aluminum alloys, quartz glass, silicon rubber, alumina ceramic sheets below 1mm, titanium alloys used in the aerospace industry, etc. The lasers used are YAG lasers and CO2 lasers.

Laser marking: It is widely used in various materials and almost all industries. The lasers currently in use include YAG lasers, CO2 lasers and semiconductor pump lasers.

Laser drilling: Laser drilling is mainly used in aerospace, automobile manufacturing, electronic instrumentation, chemical and other industries. The rapid development of laser drilling is mainly reflected in that the average output power of the YAG laser used for drilling has increased from 400w five years ago to 800w to 1000w. The relatively mature application of laser drilling in China is in the production of synthetic diamond and natural diamond wire drawing dies, as well as the production of jewel bearings for watches and instruments, aircraft blades, and multilayer PCBs. The lasers currently in use are mostly YAG lasers and CO2 lasers, as well as some excimer lasers, isotope lasers and semiconductor pump lasers.

Laser heat treatment: It is widely used in the automotive industry, such as the heat treatment of cylinder liners, crankshafts, piston rings, commutators, gears and other parts. It is also widely used in aerospace, machine tool industry and other machinery industries. The application of laser heat treatment in my country is much wider than that in foreign countries. The lasers currently in use are mostly YAG lasers and CO2 lasers.

Laser rapid prototyping: It is formed by combining laser PCB processing technology with computer numerical control technology and flexible manufacturing technology. It is mostly used in mold and model industries. The lasers currently in use are mostly YAG lasers and CO2 lasers.

Laser coating: It is widely used in aerospace, mold and electromechanical industries. The lasers currently in use are mostly high-power YAG lasers and CO2 lasers.