公开(公告)号：US20120138923A1

公开(公告)日：2012-06-07

申请号：US13379670

申请日：2010-04-06

申请人： Takeshi Hara ,  Hirohiko Nishiki ,  Yoshimasa Chikawa ,  Kazuo Nakagawa ,  Yoshifumi Ohta ,  Tetsuya Aita ,  Masahiko Suzuki ,  Okifumi Nakagawa ,  Yoshiyuki Miyajima ,  Yuuji Mizuno ,  Hinae Mizuno ,  Michiko Takei ,  Yoshiyuki Harumoto

发明人： Takeshi Hara ,  Hirohiko Nishiki ,  Yoshimasa Chikawa ,  Kazuo Nakagawa ,  Yoshifumi Ohta ,  Tetsuya Aita ,  Masahiko Suzuki ,  Okifumi Nakagawa ,  Yoshiyuki Miyajima ,  Yuuji Mizuno ,  Hinae Mizuno ,  Michiko Takei ,  Yoshiyuki Harumoto

IPC分类号： H01L29/786 ,  H01L21/336

CPC分类号： H01L27/1288 ,  H01L27/1225 ,  H01L29/7869

摘要： The present invention provides a thin film transistor including an oxide semiconductor layer (4) for electrically connecting a signal electrode (6a) and a drain electrode (7a), the an oxide semiconductor layer being made from an oxide semiconductor; and a barrier layer (6b) made from at least one selected from the group consisting of Ti, Mo, W, Nb, Ta, Cr, nitrides thereof, and alloys thereof, the barrier layer (6b) being in touch with the signal electrode (6a) and the oxide semiconductor layer (4) and separating the signal electrode (6a) from the oxide semiconductor layer (4). Because of this configuration, the thin film transistor can form and maintain an ohmic contact between the first electrode and the channel layer, thereby being a thin film transistor with good properties.

摘要翻译： 本发明提供了一种薄膜晶体管，其包括用于电连接信号电极（6a）和漏电极（7a）的氧化物半导体层（4），所述氧化物半导体层由氧化物半导体制成; 以及由选自Ti，Mo，W，Nb，Ta，Cr，氮化物中的至少一种及其合金制成的阻挡层（6b），阻挡层（6b）与信号电极 （6a）和氧化物半导体层（4），并且将信号电极（6a）与氧化物半导体层（4）分离。 由于这种结构，薄膜晶体管可以在第一电极和沟道层之间形成并保持欧姆接触，从而成为具有良好性能的薄膜晶体管。