Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (2): 129-136.DOI: 10.11944/j.issn.1000-0518.2018.02.170346

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Research Progress on Modulation of Film Thickness Uniformity of Polymer Films by Inkjet Printing

LIN Yangminga,QU Yia*(),YU Xinhongb*(),HAN Yanchunb   

  1. aState Key Laboratory on High Power Semiconductor Lasers,Changchun University of Science and Technology,Changchun 130022,China
    bState Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2017-09-20 Accepted:2017-11-23 Published:2018-02-01 Online:2018-01-29
  • Contact: QU Yi,YU Xinhong
  • Supported by:
    Supported by the National Key R&D Program of “Strategic Advanced Electronic Materials”(No.2016YFB0401301, No.2016YFB0401100)

Abstract:

Flat panel displays(FPDs) of polymer light-emitting diodes(PLEDs) attract more attention in this field because of the color tunability of polymer materials within the entire visible spectrum, simple solution processability, and suitability for large area and flexible substrates. For the patterning method of polymer light-emitting films, inkjet printing is a potential technique for applications because of its simple and high efficient patterning process, suitability for solution process, flexibility of the patterning process, and easiness to integration and automatization. The deposition of high quality polymer film is essential for fabricating high-performance PLEDs. However, a ring-shaped film is often formed on the substrate due to the “coffee ring” effect in inkjet printing. Therefore, it is essential to eliminate the “coffee ring” effect to achieve uniform deposition of polymer film. In this paper, we review the progress on avoiding “coffee ring” effect to achieve high uniformity of inkjet printing polymer films.

Key words: inkjet printing, polymer film, coffee ring effect