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Characteristics of OTFTs Using Olefin-polymer Gate Insulator and Their Application to a 5-in. OTFT-driven Flexible AMOLED Display

Published online by Cambridge University Press:  15 July 2011

Yoshiki Nakajima ,
Yoshihide Fujisaki ,
Tatsuya Takei ,
Hiroto Sato ,
Mitsuru Nakata ,
Mitsunori Suzuki ,
Hirohiko Fukagawa ,
Genichi Motomura ,
Takahisa Shimizu  and
Koichi Sugitani
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Yoshiki Nakajima
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Yoshihide Fujisaki
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Tatsuya Takei
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Hiroto Sato
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Mitsuru Nakata
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Mitsunori Suzuki
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Hirohiko Fukagawa
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Genichi Motomura
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Takahisa Shimizu
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Koichi Sugitani
Affiliation:
R & D Center, ZEON Corporation, 1-2-1, Yako, Kawasaki-ku, Kawasaki, Kanagawa, 210-9507, Japan.
Yukie Isogai
Affiliation:
R & D Center, ZEON Corporation, 1-2-1, Yako, Kawasaki-ku, Kawasaki, Kanagawa, 210-9507, Japan.
Takeyoshi Katoh
Affiliation:
R & D Center, ZEON Corporation, 1-2-1, Yako, Kawasaki-ku, Kawasaki, Kanagawa, 210-9507, Japan.
Toshihiro Yamamoto
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Hideo Fujikake
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
Shizuo Tokito
Affiliation:
Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), 1-10-11, Kinuta, Setagaya-Ku, Tokyo, 157-8510, Japan.
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Abstract

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 cm2/Vs and a current ON/OFF ratio of 107. 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.

Keywords

organicinsulatordisplay
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1287: Symposium F – Low-Temperature-Processed Thin-Film Transistors , 2011 , mrsf10-1287-f09-09
Copyright
Copyright © Materials Research Society 2011

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References

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