Laser processing system for microdrilling of printed circuit boards

2000 ◽  
Author(s):  
Junichi Nishimae ◽  
Yukio Satoh ◽  
Tetsuo Kojima ◽  
Tsukasa Fukushima
Keyword(s):  
Laser Processing ◽  
Printed Circuit Boards ◽  
Processing System ◽  
Circuit Boards ◽  
Printed Circuit

scholarly journals The Role of Focus Position in Single Pulse Laser Drilling of Highly Reflecting Materials

2019 ◽  
Vol 2 (1) ◽  
pp. 61-68
Author(s):  
György Meszlényi ◽  
Enikő Bitay
Keyword(s):  
Pulse Laser ◽  
Laser Processing ◽  
Printed Circuit Boards ◽  
Focal Spot ◽  
Single Pulse ◽  
Laser Drilling ◽  
Focus Position ◽  
Circuit Boards ◽  
Printed Circuit

Abstract The laser processing of materials which are highly reflective at laser wavelengths is problematic. We have to take into account that only a small part of the energy is absorbed, the main part being reflected. In this article we examine the laser processing of highly reflective copper and silver at 1070 nm wavelength. In laser drilling of printed circuit boards it is necessary to drill copper layer as well. In highly reflecting materials we can drill smaller holes because of the low energy efficiency. Naturally in single pulse laser drilling the focus position plays a key role: at the focal spot of the laser beam smaller diameter holes are produced, further from the focal spot, higher diameter holes are produced.

scholarly journals Laser Processing of Thin Glass Printed Circuit Boards with a Picosecond Laser at 515nm Wavelength

2014 ◽  
Vol 56 ◽  
pp. 983-990 ◽  
Author(s):  
K. Plat ◽  
P.v. Witzendorff ◽  
O. Suttmann ◽  
L. Overmeyer
Keyword(s):  
Laser Processing ◽  
Printed Circuit Boards ◽  
Picosecond Laser ◽  
Circuit Boards ◽  
Thin Glass ◽  
Printed Circuit

Slit Effect of Common Ground Patterns in Affecting Cross-Talk Noise between Two Parallel Signal Traces on Printed Circuit Boards

2008 ◽  
Vol 128 (11) ◽  
pp. 657-662 ◽  
Author(s):  
Tsuyoshi Maeno ◽  
Yukihiko Sakurai ◽  
Takanori Unou ◽  
Kouji Ichikawa ◽  
Osamu Fujiwara
Keyword(s):  
Cross Talk ◽  
Printed Circuit Boards ◽  
Common Ground ◽  
Circuit Boards ◽  
Printed Circuit

Influence of Component Mounting Density on Oscillating Characteristics of Multilayer Printed Circuit Boards

2018 ◽  
Vol 23 (2) ◽  
pp. 141-148
Author(s):  
S.Sh. Rekhviashvili ◽  
◽  
M.O. Mamchuev ◽  
V.V. Narozhnov ◽  
M.M. Oshkhunov ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Oscillating Characteristics
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