Method and device for laser drilling laminates
AssigneeSiemens Aktiengesellschaft
InventorsHubert De Steur, Marcel Heerman, Jozef Van Puymbroeck
Life of this patent
Estimating the term…
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≧30 kHz for the metal layer and ≧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.
Claims28
A method for the laser drilling of laminates which have at least one metal layer and at least one dielectric layer including an organic material, comprising:
- using a frequency-doubled Nd vanadate laser having the following laser parameters,
- pulse width<40 ns,
- pulse frequency≧30 kHz for the metal layer and
- >20 kHz for the dielectric layer, and
- wavelength=532 nm.
The method as claimed in 5, wherein the organic material, on account of the admixed additives, has an absorptance of at least 50% for the wavelength 532 nm of the laser radiation.
A device for the laser drilling of laminates which have at least one metal layer and at least one dielectric layer comprising an organic material, comprising:
- a frequency-doubled Nd vanadate laser having the following laser parameters,
- pulse width<40 ns,
- pulse frequency≧30 kHz for the metal layer and
- ≧20 kHz for the dielectric layer, and
- wavelength=532 nm.
The method as claimed in 6, wherein the organic material, on account of the admixed additives, has an absorptance of at least 50% for the wavelength 532 nm of the laser radiation.
The method as claimed in 7, wherein the organic material, on account of the admixed additives, has an absorptance of at least 50% for the wavelength 532 nm of the laser radiation.
The method as claimed in 8, wherein the organic material, on account of the admixed additives, has an absorptance of at least 50% for the wavelength 532 nm of the laser radiation.
The method as claimed in 9, wherein the organic material, on account of the admixed additives, has an absorptance of at least 50% for the wavelength 532 nm of the laser radiation.
Dependencies are inferred from the claim text.