Printing techniques for flexible electronics applications

Dr. Chloé Bois is R&D manager at the Printability and Graphic and Communication Institute (ICI) Montreal, Canada, where she specializes in printed electronics applications industrialization, printed energy and commercialization of innovations.

With her multidisciplinary team, she combines academic knowledge, production know-hows and an industrial hybrid platform of production to support industrial and research partners. Her work covers multi-scale development and manufacturing of innovative product prototyping, functional ink formulation and production industrialization for large volume manufacturing of printed electronics applications using roll-to-roll printing processes.

She holds a PhD in Process Engineering (Fuel Cell Active Layers Manufacturing by Roll-to-Roll Printing Processes) from CNRS (Grenoble, France), and Master Degrees in Materials Science and Graphic Arts Communication & Engineering both from Grenoble-INP. Dr. Bois also completed her scientific background in Innovation, Marketing and Communication from IAE (2013-2014), France and in Management and Administration from HEC (2016-2017) Montreal, Canada. She was the recipient of a JSPS fellowship (2012) and was a postdoctoral researcher in Organic Electronics Printing at the University of Tokyo, Japan. She has published her work in multiple peer-reviewed journals and presented at many national and international meetings.

 

ICI – the Printability and Graphic Communication Institute

The Institute is an integrated center for innovation and expertise in graphic communications and printability that actively supports companies and their employees in their technological and commercial development.

 

Abstract

“Printing techniques for flexible electronics applications”

What is printing?

For centuries, printing was simply defined as the set of skills and equipment used to reproduce images and symbols on a substrate in large quantities, to enable the mass distribution of specific information.

For several decades, printing has evolved to include the reproduction of color, which is the human perception of the visible spectrum of light reflected from an object.

However, today, printing is becoming an advanced manufacturing method, combining additive manufacturing technics which allow a film of material to be deposited onto a solid flexible substrate at a chosen shape and thickness.

This latest definition, which has removed the consideration for the transfer information and visual perception, has opened printing to other manufacturing fields, particularly electronics.

The quality of the functional film, characterized by targeted electrical properties among other considerations, depends heavily on optimized wet film printability and dry film properties.

During this short course, the main process parameters influencing wet film printability and dry film properties will be discussed for different manufacturing processes, production volumes and the targeted physico-chemical characteristics of the dry film for flexible electronics applications, including:

  1. Different printing processes and their range of use, including ink-jet, flat-bed and rotary screen printing, flexography and gravure,
  2. Considerations for ink, paste and dispersion formulation,
  3. Influence of the substrate over ink transfer and adhesion,
  4. Drying considerations.