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Proceedings Paper

Laser direct imaging of high density patterns on PCB covered by photoresist
Author(s): R. Barbucha; M. Kocik; J. Mizeraczyk; G. Koziol; J. Borecki
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Paper Abstract

The increasing demands for miniaturization and better functionality of electronic components and devices have a significant effect on the requirements facing the printed circuit board (PCB) industry. PCB manufactures are driving for producing high density interconnect (HDI) boards at significantly reduced cost and reduced implementation time. The interconnection complexity of the PCB is still growing and today calls for 50/50 μm or 25/25 μm technology are real. Existing technologies are unable to offer acceptable solution. Recently the Laser Direct Imaging (LDI) technology is considered as an answer for these challenges. LDI is a process of imaging electric circuits directly on PCB without the use of a phototool or mask. The exposure of the photo-sensitive resist is carried out using a laser beam that is scanned across photoresist surface and switched on and off by means of a computer control system according to the electrical circuit pattern. Usually the laser used in the LDI generates a UV line, which is suitable to the commonly available photoresists. In this paper we present the laboratory system for Laser Direct Imaging and also the recent results on imaging the circuitry pattern on the PCB covered by a photosensitive resist.

Paper Details

Date Published: 13 March 2007
PDF: 5 pages
Proc. SPIE 6604, 14th International School on Quantum Electronics: Laser Physics and Applications, 660411 (13 March 2007); doi: 10.1117/12.726996
Show Author Affiliations
R. Barbucha, The Szewalski Institute of Fluid Flow Machinery (Poland)
M. Kocik, The Szewalski Institute of Fluid Flow Machinery (Poland)
J. Mizeraczyk, The Szewalski Institute of Fluid Flow Machinery (Poland)
G. Koziol, Tele and Radio Research Institute (Poland)
J. Borecki, Tele and Radio Research Institute (Poland)


Published in SPIE Proceedings Vol. 6604:
14th International School on Quantum Electronics: Laser Physics and Applications

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