Novel top-gate zinc oxide thin-film transistors (ZnO TFTs) for AMLCDs

— High‐performance top‐gate thin‐film transistors (TFTs) with a transparent zinc oxide (ZnO) channel have been developed. ZnO thin films used as active channels were deposited by rf magnetron sputtering. The electrical properties and thermal stability of the ZnO films are controlled by the depositio...

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Veröffentlicht in:Journal of the Society for Information Display 2007-01, Vol.15 (1), p.17-22
Hauptverfasser: Hirao, Takashi, Furuta, Mamoru, Furuta, Hiroshi, Matsuda, Tokiyoshi, Hiramatsu, Takahiro, Hokari, Hitoshi, Yoshida, Motohiko, Ishii, Hiromitsu, Kakegawa, Masayuki
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container_issue 1
container_start_page 17
container_title Journal of the Society for Information Display
container_volume 15
creator Hirao, Takashi
Furuta, Mamoru
Furuta, Hiroshi
Matsuda, Tokiyoshi
Hiramatsu, Takahiro
Hokari, Hitoshi
Yoshida, Motohiko
Ishii, Hiromitsu
Kakegawa, Masayuki
description — High‐performance top‐gate thin‐film transistors (TFTs) with a transparent zinc oxide (ZnO) channel have been developed. ZnO thin films used as active channels were deposited by rf magnetron sputtering. The electrical properties and thermal stability of the ZnO films are controlled by the deposition conditions. A gate insulator made of silicon nitride (SiNx) was deposited on the ZnO films by conventional P‐CVD. A novel ZnO‐TFT process based on photolithography is proposed for AMLCDs. AMLCDs having an aperture ratio and pixel density comparable to those of a‐Si:H TFT‐LCDs are driven by ZnO TFTs using the same driving scheme of conventional AMLCDs.
doi_str_mv 10.1889/1.2451545
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subjects AMLCDs
thin-film transistor (TFT)
top gate
Transparent oxide semiconductor
zinc oxide (ZnO)
ZnO TFT
title Novel top-gate zinc oxide thin-film transistors (ZnO TFTs) for AMLCDs
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