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Inkjet printing techniques help in development of flexible electronics devices

July 3, 2012

Researchers use inkjet printing techniques to create structures on flexible substrates, allowing high-volume production of flexible electronics devices.

Technology website EMT Wordwide reports on the work of researchers from the Holst Centre, based in Eindhoven, The Netherlands, who for the first time have developed a way of creating “tall, narrow conductive structures on flexible structures” using inkjet printing techniques.

As previous attempts at perfecting the technique failed due to line spreading, the successful procedure sees special nanoparticle ink repeatedly printing thin lines on top of one another, creating a single raised line, which is then cured using the Centre’s “rapid photonic sintering technology”. The finished lines are less than 100 micro-metres (µm) wide with a low resistivity of 15mO (molybdenum) per centimetre.

The development of the technique means that manufacturers will be able to produce cheaper, high-resolution flexible applications, such as touchscreen displays and OLEDs. The Holst Centre are also working on inkjet printing high-aspect ratio lines which can be embedded into flexible substrates “to produce a much flatter surface that simplifies subsequent processing steps”.

The results were presented at the Society for Information Display Mid Europe’s (SID ME) meeting in May, which was organised by printhead supplier Xaar and held in Stockholm. Tags: Beyond Remanufacturing, Technology, Europe

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