Low-temperature fabrication of 5-in. QVGA flexible AMOLED display driven by OTFTs using olefin polymer as the gate insulator

Yoshiki Nakajima, Yoshihide Fujisaki, Tatsuya Takei, Hiroto Sato, Mitsuru Nakata, Mitsunori Suzuki, Hirohiko Fukagawa, Genichi Motomura, Takahisa Shimizu, Yukie Isogai, Koichi Sugitani, Takeyoshi Katoh, Shizuo Tokito, Toshihiro Yamamoto, Hideo Fujikake

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A 5-in. QVGA flexible AMOLED display driven by OTFTs has been fabricated at a low temperature of 130°C. A polyethylene naphthalate film was used as the flexible substrate and an olefin polymer was used as the gate insulator for the OTFT. This layer was formed by spin-coating and baking at 130°C. Pentacene was used as the organic semiconductor layer. The OTFT performance to drive the flexible display with QVGA pixels in terms of current on/off ratio, carrier mobility, and spatial uniformity on the backplane have been obtained. Phosphorescent and fluorescent OLEDs were used as light-emitting devices on a flexible display. Those layers were formed by vacuum deposition. After the flexible display was fabricated, a clear and uniform moving image was obtained on the display. The display also showed a stable moving image even when it was bent.

Original languageEnglish
Pages (from-to)861-866
Number of pages6
JournalJournal of the Society for Information Display
Volume19
Issue number12
DOIs
Publication statusPublished - 2011 Dec
Externally publishedYes

Keywords

  • AMOLED
  • Flexible display
  • Gate insulator
  • Olefin polymer
  • Organic TFT

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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