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The Application of Inkjet for the Printing of PDLC Display Cells

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Abstract:

New applications for ink jet printing are constantly being developed in fields such as electronics, optics, manufacturing, photonics, displays and medicine. VTT Information Technology is interested in developing manufacturing methods for electronic papers and other flat display technologies by using inkjet printing. In the near future, low-cost and flexible displays such as LCD or OLED displays can be wholly or partially inkjet manufactured from conductive polymers and metal particles. We are also investigating inkjet printing with regard to display components on flexible substrates, like paper, from the materials mentioned above.

The aims of the work presented in this paper were to: 1) Gain understanding and knowledge of printed and especially inkjet printed display applications, 2) Develop an inkjet LCD display pixel element and 3) Develop an inkjet one-digit alphanumeric LCD display element without control electronics. One of the most challenging aspects of the work was to find the right materials to be used in the printing series. In some cases materials could be selected and unsuitable ones eliminated due to their chemical and physical properties (e.g. viscosity), but in most cases the only reliable way to test the materials was to arrange printing tests. Material tests were carried out, the right materials for the printed PDLC display were found and a novel manufacturing method with eight different process phases for the production of the inkjet PDLC display was developed during the project.

Document Type: Research Article

Publication date: January 1, 2005

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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