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Low‐temperature fabrication of 5‐in. QVGA flexible AMOLED display driven by OTFTs using olefin polymer as the gate insulator
Author(s) -
Nakajima Yoshiki,
Fujisaki Yoshihide,
Takei Tatsuya,
Sato Hiroto,
Nakata Mitsuru,
Suzuki Mitsunori,
Fukagawa Hirohiko,
Motomura Genichi,
Shimizu Takahisa,
Isogai Yukie,
Sugitani Koichi,
Katoh Takeyoshi,
Tokito Shizuo,
Yamamoto Toshihiro,
Fujikake Hideo
Publication year - 2011
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/jsid19.12.861
Subject(s) - materials science , amoled , oled , optoelectronics , polyethylene naphthalate , flexible display , thin film transistor , polymer , layer (electronics) , backplane , nanotechnology , active matrix , computer science , composite material , computer hardware
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.