Patent · US Expired

Method and device for laser drilling laminates

US6713719B1 · kind B1 · utility

48Cited by

4References

28Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Hubert De Steur · Drongen, BE
Marcel Heerman · Merelbeke, BE
Jozef Van Puymbroeck · Beernem, BE

Key dates

Filing date	Mar 29, 2002
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Mar 29, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH05K2203/0195
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method and device for the laser drilling of laminates includes the use of a frequency-doubled Nd vanadate laser. The laser includes the following parameters: pulse width<40 ns, pulse frequency&gE;30 kHz for the metal layer and &gE;20 kHz for the dielectric layer, and wavelength=532 nmn. Such a laser is used for the laser drilling of laminates which have at least one metal layer and at least one dielectric layer including an organic material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.