Characteristics of OTFTs using olefin-polymer gate insulator and their application to a 5-in. OTFT-driven flexible AMOLED display

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


Organic thin-film transistors (OTFTs) using cross-linked olefin polymer as a gate insulator were fabricated on a plastic film. An olefin polymer layer was formed by spin-coating and baking at temperatures below 150°C. Pentacene was used as an organic semiconductor layer. The fabricated OTFTs with a short 5-μm-long channel showed a mobility of 0.1-0.2 cm 2/Vs and a current ON/OFF ratio of 10 7. These OTFTs also exhibited good stable performance in the atmosphere. On the basis of the results, we fabricated a 5 inches OTFT-driven flexible active-matrix organic light emitting diode (AMOLED) display. The gate insulator, some metal wirings and electrodes on the OTFT backplane were formed on the plastic film by photolithography. After fabrication of the OTFT backplane, OLED layers were formed by vacuum deposition through a shadow-mask. Clear color moving images were observed on the flexible display even when it was bent.

Original languageEnglish
Title of host publicationLow-Temperature-Processed Thin-Film Transistors
Number of pages6
Publication statusPublished - 2011
Externally publishedYes
Event2010 MRS Fall Meeting - Boston, MA, United States
Duration: 2010 Nov 292010 Dec 3

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2010 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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