Light-emitting seal using self-aligned organic light-emitting structure

Masahiko Ohmori*, Seiko Ueno, Naomi Kurachi, Momoe Sawamura, Masaaki Hattori, Toyokazu Inoue, Takeshi Miyabayashl, Yuuzou Takao, Shingo Hibino, Ichiro Tsuchiya, Hisami Bessho, Koya Ohara, Motoshi Ohama, Masahito Hoshino, Shigeru Ayukawa, Ryoko Miyasato, Naganori Tsutsui, Nobuhito Miura, Masatake Yamanaka, Shigeki NakaMiki Shibata, Hiroyuki Okada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A light-emitting seal using a self-aligned organic light-emitting diode (OLED) and a laminate process is proposed and demonstrated. This device has a self-aligned ink-jet-printed structure where an insulating material is dissolved in a solvent, and a mixture of organic materials is formed at the same position as that of the ink-jet-printed region. A cathode electrode is laminated onto the above ink-jet-printed structure. The merits of the device are its simple fabrication without the need for photolithography or any vacuum process, and its lower cost. The typical luminance obtained was 6,810cd/m2. The concept of the device is useful for light-emitting seals (LES), tags and graphics with noncontact electromagnetic electric supply but no electric supply line.

Original languageEnglish
Pages (from-to)472-475
Number of pages4
JournalJapanese Journal of Applied Physics
Volume47
Issue number1 PART 2
DOIs
StatePublished - 2008/01/22

Keywords

  • Ink-jet printing
  • Lamination
  • Organic light emitting diode
  • Self-alignment

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy

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