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Updated: Apr 19, 2026

Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors
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A thin-film microprocessor with inkjet print-programmable memory.

Kris Myny1, Steve Smout1, Maarten Rockelé2

  • 1imec, Kapeldreef 75, B3001 Leuven, Belgium.

Scientific Reports
|December 11, 2014
PubMed
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We developed a novel 8-bit thin-film microprocessor that can be programmed after manufacturing using inkjet printing. This innovation supports the low-cost, flexible electronics needed for the Internet of Things.

Area of Science:

  • Materials Science
  • Electrical Engineering
  • Computer Science

Background:

  • The Internet of Things (IoT) requires intelligent everyday objects, necessitating integrated electronics like 'stick-on' labels.
  • Wright's Law suggests that cumulative production reduces product costs, highlighting the need for adaptable, generic electronic devices for IoT development.

Purpose of the Study:

  • To present an 8-bit thin-film microprocessor with a programmable instruction generator for flexible electronics.
  • To demonstrate a pathway for low-cost manufacturing of IoT-enabling devices.

Main Methods:

  • Development of an 8-bit thin-film microprocessor utilizing organic p-type and soluble oxide n-type thin-film transistors.
  • Integration of a write-once, read-many (WORM) instruction generator programmed post-manufacture via inkjet printing of conductive silver inks.

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  • Fabrication on a thin polyimide film for flexible electronics.

    • Main Results:

    • The microprocessor operates at 6.5 V and achieves clock frequencies up to 2.1 kHz.
    • A 16-line instruction set, with each line containing a 9-bit instruction, was successfully defined using inkjet printing.
    • Demonstrated potential for low-cost, flexible electronic device manufacturing.

    Conclusions:

    • The developed thin-film microprocessor is a cornerstone for the Internet of Things, enabling tailored, application-specific electronic devices.
    • Inkjet printing offers a viable method for programming and customizing flexible electronics post-manufacture, aligning with Wright's Law for cost reduction.