DocumentCode :
1181916
Title :
Direct gravure printing (DGP) method for printing fine-line electrical circuits on ceramics
Author :
Kittilä, Marko ; Hagberg, Juha ; Jakku, Eino ; Leppävuori, Seppo
Author_Institution :
Microelectron. & Mater. Phys. Labs., Univ. of Oulu, Finland
Volume :
27
Issue :
2
fYear :
2004
fDate :
4/1/2004 12:00:00 AM
Firstpage :
109
Lastpage :
114
Abstract :
The tendency toward higher packing densities and higher frequencies for telecommunication devices based on ceramic technology requires smaller dimensions for electrical wiring. Electrical thick-film circuits for ceramic and LTCC-substrates have, up to now, been printed with screen printing, where the printing lines width limit is about 125 μm in mass production. A silicone polymer direct gravure printing (Si-DGP) process has been developed to perform smaller dimensions, down to 20 μm lines width, for electrical circuitry. In the DGP process, the conductor paste is doctored to the grooves of the gravure and then it is pressed against the substrate. The paste is, thus, printed directly onto the substrate from the patterned gravure. The results showed that, using the DGP process, it was possible to print conductor lines down to 20 μm in width. It was also noted that a 100% transfer of paste from the grooves of the gravure could be obtained with commercial pastes using the silicone polymer gravure. A dried thickness of up to 28 μm was measured for the narrowest lines. Also conductor lines printed by the Si-DGP method were embedded inside LTCC-module.
Keywords :
ceramic packaging; fine-pitch technology; thick film circuits; LTCC-substrates; ceramic substrates; ceramic technology; conductor lines; conductor paste; electrical circuitry; electrical thick-film circuits; electrical wiring; fine-line electrical circuits; gravure grooves; patterned gravure; screen printing; silicone polymer direct gravure printing; silicone polymer gravure; telecommunication devices; Ceramics; Circuits; Conducting materials; Conductors; Frequency; Mass production; Polymers; Printing; Substrates; Wiring; 65; Fine line; LTCC; gravure; printing; thick film;
fLanguage :
English
Journal_Title :
Electronics Packaging Manufacturing, IEEE Transactions on
Publisher :
ieee
ISSN :
1521-334X
Type :
jour
DOI :
10.1109/TEPM.2004.837959
Filename :
1366494
Link To Document :
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