Oxide thin-film transistor technology for flexible organic light-emitting diode displays

This paper describes our recent progress in the development of oxide thin-film transistors (TFTs) for use in flexible organic light-emitting diode (OLED) displays. The bending stability of oxide TFTs was investigated using In-Ga-Zn-O (IGZO) TFTs fabricated on a thin polyimide film. Back-channel-etched (BCE) TFTs on a plastic film using In-Sn-Zn-O (ITZO), which has higher mobility than IGZO, were also developed in an effort to realize future large-sized flexible displays. Subsequent to this development, a flexible OLED display was successfully fabricated using the BCE-ITZO-TFTs.

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