Session 18: Printing Technology
Advanced Flexible Substrate Technology for Improved Accuracy, Definition, and Conductivity of Screen Printed Conductors
Thursday, June 22, 2017
8:00 AM - 8:25 AM
One of the major concerns with screen printing of low temperature curing polymer thick film (PTF) pastes onto common flexible PET substrate materials is the overwhelming spread of the paste beyond the design line width after printing. Industry observation and controlled testing have shown this spread can be as much as 80% over the circuit design's intended line width. This issue prevents designers from increasing circuit density and/or reducing circuit real estate without incorporating other, more involved and more costly patterning methods. In many cases, flexible circuit fabricators desiring finer more accurate circuit elements may have to subcontract parts out of house in order to incorporate other patterning methods and in turn lose control of both cost and lead time to the hands of their subcontracting partners.
This presentation will provide results of numerous in-house and field testing, comparing printed line width control, edge definition, and improved conductivity of printed polymer Ag conductors on different flexible PET substrates.
Art Dobie is a Technical Representative for Chromaline Screen Print Products in Duluth, MN. Mr. Dobie has over 35 years’ experience in the screen printing industry since receiving his BS in Graphic Communications specializing in Screen Printing Technology in 1980 from California University of Pennsylvania. He is a Life Member and Fellow of the Society of the International Microelectronics and Packaging Society (IMAPS), and was the 2006 recipient of the IMAPS John A. Wagnon Technical Achievement Award for outstanding technical contributions to screen printing technology as related to microelectronics. Art was inducted into the SGIA’s Academy of Screen Printing Technology in 1998, and was the 2010 recipient of the SGIA David Swormstedt, Sr. Memorial Award, recognizing the best published article or technical paper written for any aspect of the screen printing industry.