Flexible E-Paper Displays Using Low-Temperature Process and Printed Organic Transistor Arrays

  • Jin, Yong-Wan (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Kim, Joo-Young (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Koo, Bon-Won (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Song, Byong-Gwon (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Kim, Jung-Woo (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Kim, Do-Hwan (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Yoo, Byung-Wook (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Lee, Ji-Youl (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Chun, Young-Tea (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Lee, Bang-Lin (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Jung, Myung-Sup (Materials Research Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Park, Jeong-Il (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics) ;
  • Lee, Sang-Yoon (Display Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics)
  • Published : 2009.10.12

Abstract

We developed 4.8 inch WQVGA e-paper on plastic substrate using organic field effect transistors (OFETs). Polyethylene naphthalate (PEN) film was used as a flexible substrate and arrays of OFETs with bottom-gate, bottom-contact structure were fabricated on it. Lowtemperature curable organic gate insulating materials were employed and polymer semiconductor solutions were ink-jetted on arrays with high-resolution. At all steps, process temperature was limited below $130^{\circ}C$. Finally, we could drive flexible e-paper displays based on OFET arrays with the resolution of 100 dpi.

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